Android Developers Blog

Enhance your app for the new Pixel lineup: Unveiled at Made by Google

2026-08-12T12:00:00.000-07:00

Posted by Fahd Imtiaz, Senior Product Manager, Loryn Hairston, Product Marketing Manager, and Tracy Agyemang, Product Marketing Manager, Android Developer

Made by Google expands what's possible across the Android ecosystem. With the introduction of the Pixel 11 Pro Fold, Pixel Watch 5, and the entire Pixel family, users are moving seamlessly across diverse screen sizes, unique postures, and intelligent experiences. For you, the developer, this represents a massive opportunity: foldable users spend about 14x more than standard phone users. To help you elevate your existing experience without starting from scratch, we’re sharing our latest platform guidance alongside real-world examples from developers already putting these features into production.

Deliver adaptive experiences across foldables and expanded displays

The Pixel 11 Pro Fold gives your app a chance to flex its capabilities with an expanded inner display and a standard size outer screen. Building for the foldable form factor requires dropping hardcoded layout rules and designing around available window space. Leveraging Jetpack Compose APIs like Navigation 3 with Scene strategies or our newest layout APIs like Grid and FlexBox allows your layout containers to automatically wrap, span, and reflow. You can also use the experimental MediaQuery API to dynamically adapt your UI to environmental signals like foldable posture, and keyboard states.

Building adaptively requires tracking actual app dimensions rather than physical device size, especially during split-screen and multitasking flows. Using Window Size Classes from the WindowManager library allows your layout to respect folds and hinges as natural content separators.

For instance, Notability leveraged Material 3 Window Size Classes to create a responsive two-pane layout that transitions smoothly between folded and expanded screens. As Ryan Shea, Android Engineering Manager at Notability, shared, tracking the window itself allows their layout and canvas zoom to ensure notes stay fit to the page through every fold, rotation, or split-screen resize, noting that they wanted the app "to feel native at every size, not just stretched to fit."

Notability’s quiz UI adapted for expanded screens

Ensuring these transitions feel seamless also requires state preservation across configuration changes. Using ViewModel retains UI state so interactions like scroll position, form inputs, and open dialogs remain uninterrupted when transitioning between inner and outer screens.

Taking this approach, Flo Health used Jetpack Compose state primitives, ViewModel, and Window Size Classes to make their highest-traffic user journeys resilient to rotation, fold/unfold and resizing transitions. As Aleksandr Kolodiazhnyi, Senior Android Engineer at Flo Health, shared, “Android's adaptive guidance turned what looked like a major refactor into a templated rollout," allowing them to adopt Compose primitives without a rewrite, "cutting [their] state-preservation code by roughly 30% while fixing lifecycle and analytics correctness issues that improved the app on every form factor."

To take full advantage of the foldable form factor, leverage FoldingFeature updates to trigger posture-specific layouts. When a user partially folds their device into tabletop posture, you can split your UI automatically by placing primary controls on the lower display and main content or viewfinders on the upper display.

Handling camera previews across foldable state changes, requires managing orientation shifts carefully. Migrating to the CameraX library ensures automatic handling of sensor rotation and display scaling across screens, while existing Camera2 codebases can also achieve stability using the CameraViewfinder library. These camera and display capabilities allow you to power dual-screen previewing and high-resolution rear camera selfies with minimal custom logic.

Prepare your app for these form factors today by exploring our complete adaptive development guidance at Build adaptive apps.

Bring delightful, gesture-driven experiences to the wrist

The new Pixel Watch 5 is here, and we’ve optimized it to take advantage of the intelligent, power-efficient, touch-free convenience of Wear OS 7. Thanks to system-wide performance optimizations and a collection of new features built to help users complete tasks efficiently, you can provide rich experiences that require only a single user action to complete.

The one-handed gestures framework provides a convenient way for users to interact with their watches without needing to touch the screen with their opposite hand. Starting with the 1.7 beta release of Compose for Wear OS 7, you can seamlessly integrate one-handed gesture control into your Wear Compose apps with simple physical inputs on the watch-wearing arm, like a double-pinch or wrist turn.

Spotify is adopting this framework to make controlling media more effortless. By mapping Wear OS gesture events directly to the media player state, users will be able to pause or resume playback using a simple double-pinch, keeping music controls accessible even when their hands are full.

Pause Spotify media with a pinch gesture

Wear OS 7 also brings Live Updates directly to the wrist to surface real-time information like live sports scores, workout progress, and delivery status, which can also appear in the At-a-Glance surface on Pixel Watch 5. For example, Just Eat uses Live Updates to keep users informed on order arrival times at a glance. You can publish updates locally from your watch app or leverage phone notification bridging on supported devices to deliver real-time tracking across screens.

Live Updates from Just Eat delivering real-time status and delivery ETAs at a glance

You can also extend glanceable interactions across watch surfaces on Wear OS 7 by using Wear Widgets, powered by Jetpack Glance and RemoteCompose. Wear Widgets with Compose offer greater expressiveness and consistency than the old Tiles framework, and the two available widget layouts—small and large– align perfectly with the 2x1 and 2x2 formats on mobile, ensuring your designs feel cohesive across devices.

On top of all these great new features, Wear OS 7 delivers up to a 10 percent improvement in battery life over Wear OS 6, making the Pixel Watch 5 a truly indispensable all-day companion for your users.

To get started developing for Wear OS 7, use the new emulator, and check out all of our Wear OS resources and guidance at Build apps for the wrist with Wear OS.

Unlock on-device intelligence with Gemini Nano 4

Pixel 11 devices are built to run Gemini Nano 4, bringing fast, responsive, on-device intelligence to the hardware. By running AI workflows directly on device, you can offer low-latency, real-time interactions that feel instant and integrated without needing round trips to the cloud.

Through the ML Kit GenAI Prompt API, you can send natural language requests directly to Gemini Nano on device. The model supports over 140 languages, better multimodal understanding, and much more. Build intelligent on-device features using advanced capabilities like structured output and thinking mode.

Build smart capabilities into your app using our self-service tools and Gemini models.

Shape the next generation of experiences for the Pixel ecosystem today

Made by Google showcases what's possible when hardware and software evolve together, and you are at the center of that innovation. You can begin optimizing your apps today by exploring our updated adaptive guidance, creating glanceable experiences for Wear OS 7, and integrating on-device AI with ML Kit.

To help you implement these updates even faster, you can now leverage Android skills, which provide AI-optimized instructions for agents and tools. Whether you are using Gemini in Android Studio or running the Android CLI through other agents, Android skills give your AI tools the context needed to execute complex workflows automatically. For instance, you can prompt your agent with the CameraX skill to handle camera display scaling across foldables, or use the Adaptive skill to set up dynamic Compose layouts without additional manual work.

Take advantage of these new surfaces, accelerate your workflow with agentic tools, and share your latest builds with the Android community! Head over to developer.android.com to access full documentation, explore the Android skills GitHub repository, and start building today.

Bring one-handed gestures to your Wear OS app

2026-08-12T10:00:00.000-07:00

Posted by Chiara Chiappini, Developer Relation Engineer, Android Developer Relations

One-handed gestures offer a convenient and touch-free way for users to interact with their watches, enabling them to perform key actions using only the hand on which the device is worn.

First introduced on Pixel Watch with Wear OS 6.1, one-handed gestures made quick interactions effortless, such as starting and stopping a timer, accepting calls, and controlling media.

Now, with Wear OS 7, we're expanding this functionality with a new Gestures framework that allows OEMs to map gestures to primary actions and dismissals, and an API to bring gesture control to the developer community.

Starting with the 1.7 beta release of Compose for Wear OS, you can seamlessly integrate gesture control into your Wear Compose apps. To use this release, upgrade your Wear Compose dependency to:

androidx.wear.compose:compose-material3:1.7.0-beta01

Designing for one-handed interaction

The one-handed gestures framework is designed around two primary interaction patterns that allow users to take action without touching the screen:

Primary action, which on Pixel Watch is mapped to a double-pinch gesture: this action should be mapped to the most important task in a given context. For example, users can perform this gesture to take a photo in a camera app, start/stop a timer, or accept an incoming call.
Dismiss action, which on Pixel Watch is mapped to a wrist turn gesture: this action is mapped to system back by default and provides an intuitive way to close interruptive screens or get back to the watch face. It may be overridden for specific use cases, such as silencing an incoming phone call.

These gestures are currently available on Pixel Watch 3 and newer, and the Wear OS gesture framework is available to all Wear OS device manufactures to adopt.

Check out our new design guidance for integrating one-handed gestures into your Wear app.

Integrating gestures with Compose on Wear OS

To provide seamless gesture support in Wear OS 7, we are introducing a new Modifier.oneHandedGesture that you can apply to any existing interactive composable to make it gesture-aware.

Implementing gestures with Compose on Wear OS requires these steps:

Define the gesture configuration. Start by using rememberOneHandedGestureConfiguration to define the nature of the interaction. This configuration dictates the basic behavior by providing the GestureAction (e.g. tracking a primary pinch or a dismiss wrist flick).
Initialize the indicator state. Depending on your UI component, initialize a specific state object, such as OneHandedGestureClickIndicatorState for buttons or OneHandedGestureScrollIndicatorState for scrollable lists. This state is used to coordinate visual feedback between the gesture detection modifier and the visual UI indicators, seamlessly managing visibility, timing, and animations.
Apply Modifier.oneHandedGesture to your interactive component. You'll pass in your configuration and state, and you’ll provide standard callbacks: onGestureAvailable to activate the visual hint when the system prepares the gesture, and onGesture to execute your action when the gesture happens.

The following sample shows how those three steps translate into code when configuring an IconButton:

val gestureConfig = rememberOneHandedGestureConfiguration(action = OneHandedGestureAction.Primary)
val indicatorState = remember { OneHandedGestureClickIndicatorState() }
val coroutineScope = rememberCoroutineScope()

OutlinedIconButton(
    onClick = onPlayPauseButtonClicked,
    modifier = Modifier.touchTargetAwareSize(IconButtonDefaults.LargeButtonSize)
        .oneHandedGesture(
            gestureConfiguration = gestureConfig,
            interactionSource = interactionSource,
            onGestureLabel = "play or pause",
            onGestureAvailable = { 
                coroutineScope.launch { indicatorState.showIndicator() } 
            },
            onGesture = onPlayPauseButtonClicked,
        ),
) {
    // button content goes here
    // See "Guided discovery with gesture indicators" section of this post for recommendations on adding a gesture indicator.
}

The GestureAction.Primary can also be used to scroll when the content is the end goal of the user journey, or there is a gesture actionable button off screen that the user can scroll to. Some examples include:

Scrolling through a notification to view the content and/or initiate a reply (available in TransformingLazyColumn and ScalingLazyColumn).
Paging through workout metrics or other content that doesn’t require the user to tap to continue the user journey (available in HorizontalPager and VerticalPager).

val scrollGestureConfig = rememberOneHandedGestureConfiguration(action = GestureAction.Primary)
val scrollIndicatorState = remember { OneHandedGestureScrollIndicatorState() }
val coroutineScope = rememberCoroutineScope()

TransformingLazyColumn(
    state = scrollState,
    contentPadding = contentPadding,
    modifier = Modifier
        .fillMaxSize()
        .oneHandedGesture(
            gestureConfiguration = scrollGestureConfig,
            onGestureLabel = "scroll",
            onGestureAvailable = { 
                coroutineScope.launch { scrollIndicatorState.showIndicator() } 
            },
            onGesture = { OneHandedGestureDefaults.scrollDown(scrollState) }
        )
) {
    // list content goes here
    // See "Guided discovery with gesture indicators" section of this post for recommendations on adding a gesture indicator.
}

Guided discovery with gesture indicators

To help users learn which gestures are available, gesture indicators work as hints to help discovery about which gestures are available on a screen.

These hints provide animated cues that inform users where they can perform a gesture. The framework manages the cadence and appearance of these hints, ensuring that they are helpful without being intrusive. System settings let users change the cadence to something less frequent if desired.

To integrate with hints, the API provides the following gesture indicator components:

the OneHandedGestureClickIndicator for components like a Button
the OneHandedGestureScrollIndicator component for scrolling
the OneHandedGestureHorizontalPageIndicator for the HorizontalPager
the OneHandedGestureVerticalPageIndicator for the VerticalPager

The following example shows how to use the OneHandedGestureClickIndicator for a Button. See another example for using the OneHandedGestureScrollIndicator in our guidance.

val gestureConfig = rememberOneHandedGestureConfiguration(action = GestureAction.Primary)
val indicatorState = remember { OneHandedGestureClickIndicatorState() }
val coroutineScope = rememberCoroutineScope()

OutlinedIconButton(
    onClick = onPlayPauseButtonClicked,
    modifier = Modifier.touchTargetAwareSize(IconButtonDefaults.LargeButtonSize)
        .oneHandedGesture(
            gestureConfiguration = gestureConfig,
            interactionSource = interactionSource,
            onGestureLabel = "play or pause",
            onGestureAvailable = { 
                coroutineScope.launch { indicatorState.showIndicator() } 
            },
            onGesture = onPlayPauseButtonClicked,
        ),
) {
    OneHandedGestureClickIndicator(
        gestureConfiguration = gestureConfig,
        indicatorState = indicatorState,
    ) {
        val icon = if (playerUiModel.playbackState.isPlaying) Icons.Filled.Pause else Icons.Filled.PlayArrow
        Icon(icon, contentDescription = "Play or Pause")
    }
}

Sample app showing gesture hint for media controls

We are already seeing early adoption of these APIs from partners like Spotify, who are using one-handed gestures to make music control more seamless on the go. By adopting the Modifier.oneHandedGesture into their Wear OS app, Spotify allows users to play or pause their music with the primary gesture action, which on Pixel Watch devices is the double-pinch gesture. This action triggers the same behavior as the physical play/pause button, and the user doesn’t need to touch the screen.

Spotify app with gesture integration

Bring one-handed gestures to your app

You can begin experimenting with one-handed gestures today in the 1.7 beta release of Compose for Wear OS.

Ensure your app is running on Wear OS 7, which provides the underlying platform support for gesture detection. Check out our new one-handed gestures developer guide to see how you can start building more convenient experiences for your users.

What's new in the Jetpack Compose August '26 release

2026-08-12T09:00:00.000-07:00

Posted by Nick Butcher, Product Manager, Jetpack Compose

Today, the Jetpack Compose August ‘26 release is stable! This release brings version 1.12 across core Compose modules (see the full BOM mapping), introducing rich visual APIs like Mesh Gradients and Wide Color Gamut (WCG) support, structural layout features like named areas in Grid, seamless integration with Android’s Credential Manager, and significant testing and performance improvements.

To update your project to today’s release, upgrade your Compose BOM version to 2026.08.00:

implementation(platform("androidx.compose:compose-bom:2026.08.00"))

Breaking Changes

AGP & Compile SDK: Compose 1.12 updates compileSdk to API 37, requiring a minimum AGP 9.1.1. As a reminder, Compose will always target the latest compileSdk. Learn more about this change here.

Modifier.onFirstVisible() is deprecated: Migrate to Modifier.onVisibilityChanged(), which provides more precise visibility threshold tracking.

Graphics

Mesh Gradients

Compose 1.12 introduces MeshGradientPainter to help you create multi-point, organic color gradients.

val rows = 1
val columns = 1

val gradientPainter = remember {
    MeshGradientPainter(rows, columns) {
        // Parameters: row, column, position, color
        setVertex(0, 0, Offset(0f, 0f), Color.Red)     // Top-Left
        setVertex(0, 1, Offset(1f, 0f), Color.Blue)    // Top-Right
        setVertex(1, 0, Offset(0f, 1f), Color.Green)   // Bottom-Left
        setVertex(1, 1, Offset(1f, 1f), Color.Yellow)  // Bottom-Right
    }
}

Box(
    modifier = modifier
        .aspectRatio(16/9f)
        .fillMaxWidth()
        .paint(gradientPainter)
)

For more information and examples, see the documentation.

Wide Color Gamut & HDR Support

Modern displays offer extended color fidelity and higher dynamic range. In Compose 1.12, full pipeline support for Wide Color Gamut (P3) and HDR rendering has been enabled across Compose graphics, paint, and shaders. Colors defined in non-sRGB color spaces (such as Display P3) are preserved through to platform rendering without color clamping. Colors will safely fall back to sRGB if they use an unsupported color space (e.g. CieXyz, CieLab, or Oklab), rely on a color space on an unsupported Android version (e.g Bt2020Hlg on Android 13 and below), or if the app is running on Android 9 (API 28) and below.

Other notable changes:

LayerOutsets was added to GraphicsLayer & Modifier.graphicsLayer, which you can use to increase the visual bounds of the layer beyond its measured size. Apply LayerOutsets to avoid the implicit clipToBounds behavior when the layer is promoted to an offscreen buffer.

Styles

At Google I/O, we shared our early vision for the Compose Styles API—a unified, performant way to style components. Since then, we have continued building the underlying architecture to guarantee strict type safety and predictable correctness, and to support building custom design systems.

To ensure we get this foundational layer correct, the API will remain experimental, and you can expect breaking changes.

Runtime Optimizations

Keyed SideEffect Overload

SideEffect now supports key arguments, which lets you fire one-shot side effects whenever specific keys change. This can lead to better performance compared to using a LaunchedEffect or DisposableEffect when you don’t need the coroutine or dispose block. SideEffect is up to 90% faster than LaunchedEffect and around 20% faster than DisposableEffect. Note that SideEffect runs its effect before DisposableEffect and LaunchedEffect, so use caution if migrating existing effects to this API, especially for LaunchedEffects that rely on being dispatched to start after the current frame is completed.

@Composable
fun AnalyticsTracker(userId: String, screenName: String) {
    SideEffect(key1 = userId, key2 = screenName) {
        analytics.logScreenView(userId, screenName)
    }
}

Animation

DeferredTargetAnimation has graduated out of experimental status.

Interactive Two-Stage Transitions

New composables: DeferredAnimatedContent and DeferredAnimatedVisibility allow creating delightful two-stage transitions, e.g. for predictive back gesture tracking.

Manual animation control: During a transition's deferred phase, animated properties (like scale or offset) can now be manually manipulated in real-time (e.g., tracking a swipe gesture).

Seamless handoff: Once the deferred phase ends, the transition engine takes over and performs a seamless handoff, including velocity transfer, to the automatic transition.

Shared element support: A new permitTransformDuringDeferredTransition flag in SharedContentConfig controls whether shared elements visually transform along with their parent containers during the deferred transition phase.

val state = remember { DeferredTransitionState(initialScreen) }
val transition = rememberDeferredTransition(state)

if (predictiveBackInProgress) {
    state.defer(targetScreen)
} else {
    state.animateTo(targetScreen)
}

transition.DeferredAnimatedContent(
    targetState = targetScreen,
    mutableTransformSpec = {
       MutableContentTransform {
           // Manually manipulate properties during the deferred phase
           initialContentTransform { scale = swipeProgress }
       }
    }
) { screen ->
    ScreenContent(screen)
}

Below are two demos of use cases where a gesture-driven animation is handed off to a triggered animation:

Text, Input & Platform Integrations

Editable Text Formatting

New APIs offer rich-text formatting for editable text in BasicTextField. You can now programmatically apply and manipulate inline character and paragraph formatting using SpanStyle and ParagraphStyle via the new addStyle() method inside a TextFieldBuffer scope (such as inside textFieldState.edit { ... } or an InputTransformation). Additionally, TextFieldBuffer provides getSpanStyles() and getParagraphStyles() APIs that return TrackedRange objects, allowing you to read, update, or remove applied styles. To complement formatting creation, TextFieldState now exposes a read-only textStyles property for querying active styles across ranges, while TextFieldBuffer provides originalTextStyles to inspect formatting state prior to an edit. Text formatting and custom annotations are persisted across configuration changes.

val state = rememberTextFieldState("Formatted text in Compose 1.12")

// Apply bold and color styles to a range of text
state.edit {
    addStyle(
        SpanStyle(fontWeight = FontWeight.Bold, color = Color.Blue),
        start = 0,
        end = 9
    )
}

// Query active styles from TextFieldState
val currentStyles = state.textStyles

Text Selection

A new SelectionState API provides programmatic control and observability over text selection within a SelectionContainer. Hoisting a SelectionState object via rememberSelectionState() and passing into SelectionContainer exposes selectedTexts as a reactive list of AnnotatedStrings and provides methods like selectAll(), clear(), select(TextRange), and extendSelectionByWord().

Additionally, use getSelectableTexts() to retrieve all selectable text items in layout order and select text across composables in the SelectionContainer using a global range.

@Composable
fun ProgrammaticSelectionExample() {
    val selectionState = rememberSelectionState()

    Column {
        Button(
            onClick = { selectionState.selectAll() },
            modifier = Modifier.disableSelectionClearOnTap()
        ) {
            Text("Select All")
        }

        SelectionContainer(state = selectionState) {
            Text("Text content to be selected programmatically.")
        }
    }
}

Credential Manager Integration

Compose text fields now natively integrate with Android’s Credential Manager (API 34+) via the Autofill framework (below API 34 is handled by androidx.credentialslibrary). By attaching the new credentialRequest semantics property with CredentialRequestData, text inputs can prompt passkeys, saved credentials, or sign-in requests directly within the user input flow.

@Composable
fun LoginField(textFieldState: TextFieldState) {
    val credentialData = remember {
        CredentialRequestData(
            // Specify Credential Manager request options
        )
    }

    BasicTextField(
        state = textFieldState,
        modifier = Modifier.semantics {
            credentialRequest = credentialData
        }
    )
}

Other notable changes:

Support for font variation settings in downloadable fonts.
Enabled auto-scrolling when dragging text selection beyond the viewport in SelectionContainer.
Added support for automatic interaction sounds (clicks and focus navigation) to Compose components, with a new SoundEffectOnInteraction composable to allow opt-out. Note that as a consequence of this change, semantics click listeners must now be called from the main thread, which may affect a small number of test cases.
KeyboardType now includes Date, Time, DateTime, and SignedDecimal.
BasicSecureTextField now uses TextObfuscationMode.System by default, while RevealLastTyped serves as an absolute override.

Layout Enhancements

Named Areas in Grid Layout

Building complex 2D layouts is now easier with named areas in the @Experimental Grid component. Rather than managing numeric column and row indices across items, you can define semantic regions in your GridConfigurationScope and position composables by area name.

@OptIn(ExperimentalGridApi::class)
@Composable
fun DashboardLayout() {
    Grid(
        config = {
            area("header", row = 0, column = 0, rowSpan = 1, columnSpan = 2)
            area("sidebar", row = 1, column = 0)
            area("content", row = 1, column = 1)
            gap(16.dp)
        }
    ) {
        HeaderSection(modifier = Modifier.gridItem(areaId = "header"))
        NavigationSidebar(modifier = Modifier.gridItem(areaId = "sidebar"))
        MainContentView(modifier = Modifier.gridItem(areaId = "content"))
    }
}

For more information, see the documentation.

Performance

As with every release, we continue to invest in Compose's performance to ensure that the framework helps you to build beautiful, performant apps. In this release we've focused on improving startup performance and are now seeing Time to Initial Display (the time it takes for an app to produce its first frame) that is comparable to Views in our benchmarks.

Testing & Tooling Upgrades

Test Synchronization

Compose 1.12 introduces new test APIs designed to reduce test execution times and eliminate flakiness during state sampling:

hasPendingWork: Passively checks if the UI has pending work without advancing the clock, which is ideal for manual animation loops.

runWithoutImplicitWait: Temporarily disables implicit synchronization when stepping through manual clock frames (e.g. animation tests).

@Test
fun testAnimationStateFast() {

composeTestRule.mainClock.autoAdvance = false
    
    while (composeTestRule.hasPendingWork()) {
        composeTestRule.mainClock.advanceTimeByFrame()
        composeTestRule.waitForIdle()
        
        composeTestRule.runOnUiThread {
            composeTestRule.runWithoutImplicitWait {
                // This is most effective when querying multiple nodes in a single frame. 
                // It prevents the redundant synchronization overhead that would 
                // otherwise occur on every individual query.
                val box1 = composeTestRule.onNodeWithTag("Box1").fetchSemanticsNode()
                val box2 = composeTestRule.onNodeWithTag("Box2").fetchSemanticsNode()
                
                assertThat(box1.boundsInRoot.right).isAtMost(box2.boundsInRoot.left)
            }
        }
    }
}

Other notable changes:

The captureToImage API now allows you to capture a popup or dialog together with its anchor in a single bitmap.
Added onRootWithViewInteraction to scope Compose semantic searches to specific Android Views. This simplifies testing hybrid UIs, such as RecyclerViews, without requiring unique test tags in production code.
@PreviewWrapper annotations can now be applied to custom @MultiPreview classes, enabling reusable preview setups (such as custom themes) across multiple components.

Happy Composing!

Compose 1.12 makes app development easier and more expressive than ever, with mesh gradients, wide color gamut support, downloadable variable fonts, Credential Manager integration, and faster testing tools. As always, we value your input, so please share your feedback on these changes or what you'd like to see next on our issue tracker. Happy composing!

Media3 1.11 - What's new?

2026-08-11T09:00:00.000-07:00

Posted by Toni Heidenreich, Software Engineer, Android

Media3 1.11 is out. Powering the vast majority of top Android media apps, this release brings new features, bug fixes, and improvements across playback, editing, and UI components. We're expanding our Jetpack Compose UI modules with customizable Player slots and easy to use defaults, interactive gestures, state observers, and short-form video preloading using PlayerPool. We also modernized the Media3 Cast integration with SystemUI Output Switcher support, introduced a new Ktor HTTP client network extension, and added new muxing utilities for Ogg and WAV files.

Read on for key highlights, and check out the full release notes for a comprehensive list of changes.

Playback UI and Compose

With Android becoming Compose-first, we are continuing to expand the media3-ui-compose and media3-ui-compose-material3 modules. This update introduces more granular control over your player layout, richer interaction patterns, and deeper integration with Material3.

Customizable Player layout

The Material 3 Player Composable now supports dedicated content slots for topControls, centerControls, bottomControls, and errorOverlay. You can drop in your own Composables or use the ready-made defaults published in PlayerDefaults:

Player(
  player = player,
  topControls = { PlayerDefaults.TopControls(player) },
  centerControls = { PlayerDefaults.CenterControls(player) },
  bottomControls = { PlayerDefaults.BottomControls(player) },
)

The Player Composable also integrates FocusRequester support, enabling seamless D-pad and keyboard navigation on Android TV, foldables, and desktop environments.

Example for a Composable Player with customized controls

Gestures and playback speed control

PlaybackSpeedState now provides a fast-forward/slow-motion API. The demo-compose app showcases this with a long-press gesture to fast-forward playback and seeking with double tap. Combined with the ProgressSlider introduced in 1.10, the Compose player UI now offers rich touch and gesture interactions out of the box.

Short-form video preloading with PlayerPool

For apps with sliding-window media feeds (for example, short-form vertical video), managing multiple ExoPlayer instances efficiently is a common challenge. Media3 1.11 introduces PlayerPool (in common-ktx) and rememberPooledPlayer (in ui-compose) to handle player recycling and preloading automatically.

The new ShortFormPlayerScreen in demo-compose shows this in action, a vertically paging feed where players are pooled, preloaded, and seamlessly recycled as the user scrolls.

MiniController

A new MiniController Composable in media3-ui-compose-material3 provides a compact playback bar displaying the current item's title, artist, artwork, and progress alongside play/pause controls. As all our default Composables in media3-ui-compose-material3, the MiniController supports Material3 Dynamic Color integration, allowing it to automatically adapt to the user's wallpaper theme.This is ideal for persistent bottom-sheet or mini-player affordances, for example while the user browses content or during active Cast sessions.

The Media3 MiniController showing album art, media metadata and basic controls

Expanded state holders for metadata and errors

We added several new reactive state holders to media3-ui-compose:

rememberCurrentMediaItemState – observe metadata about the currently playing item
rememberPlaylistState – observe the full playlist and active indices
rememberErrorState – track playback errors, with a matching ErrorText Composable and default ErrorOverlay in Material3

We'll continue working on new additions and more customization options in upcoming releases. Please share your thoughts on the project issue tracker.

Modernized Cast integration

Media3 1.11 updates the Cast extension with programmatic configuration options and support for OS-level routing.

CastParams and SystemUI Output Switcher

You can now configure the Cast extension using CastParams:

val castParams = CastParams.Builder()
  .setShowSystemOutputSwitcherOnCastButtonClick(true)
  .build()

Cast.getSingletonInstance(context).initialize(castParams)

Setting setShowSystemOutputSwitcherOnCastIconClick(true) configures the MediaRouteButton to open Android's native SystemUI Output Switcher on supported platform versions, providing a unified output picker experience.

Reactive MediaRouteButton state in Compose

Apps using Jetpack Compose can now easily add the Media routing button (also known as Cast button), which automatically observes the dialog state and updates accordingly. No further logic needed when used together with Media3's CastPlayer!

@Composable
fun TopAppBarWithCast() {
  Row {
    Text(text = "App Title")
    MediaRouteButton()
  }
}

Media3 media route button in an app launching the default output switcher dialog

Core playback and session enhancements

Eclipsa Video - HAGC dynamic HDR metadata (API 37+)

Eclipsa Video promises a more consistent HDR experience across devices, with a consistent baseline HDR white, adaptive headroom depending on the screen and the surroundings, ensuring the creative intent is preserved on all devices.

ExoPlayer now supports playback of the necessary HAGC (ST 2094-50) timed metadata for progressive media (MP4, Matroska). The player automatically merges HAGC metadata tracks with the associated video track and delivers the metadata out-of-band to the decoder on API 37+ devices. On older devices, ExoPlayer seamlessly falls back to providing a standard HDR playback experience without the adjustments.

Illustration to show benefits of Eclipsa Video HDR, like more consistent color contract

New Ktor HTTP client extension

A new media3-datasource-ktor extension module provides KtorDataSource, backed by the Ktor HTTP stack. This offers a Kotlin-first, coroutine-friendly alternative to the existing Cronet and OkHttp data source modules.

Asynchronous MediaSession connections

MediaSession.Callback now includes onConnectAsync(), which lets you process controller connection attempts asynchronously — for example, to verify authorization before accepting a connection. You can return an immediate Future with Futures.immediateFuture(ConnectionResult) for the same behavior as the existing onConnect.

override fun onConnectAsync(
  session: MediaSession,
  controller: MediaSession.ControllerInfo
): ListenableFuture<MediaSession.ConnectionResult> {
  return authenticateControllerAsync(controller)
}

Safer MediaSession defaults

For apps that don’t override onConnect or onConnectAsync in MediaSession.Callback, the library now defaults to a more secure configuration. Specifically, session data is no longer shared by default with untrusted controllers, meaning third-party or non-system apps lacking notification access are restricted from accessing session data unless you explicitly implement these callback methods to authorize the connection.

New Muxer implementations & container parsing

OggMuxer and WavMuxer

We've added two new dedicated muxers: OggMuxer for muxing OPUS and VORBIS streams into standard .ogg files, and WavMuxer for generating uncompressed and floating-point PCM .wav audio files.

Container parsing and track references

MP4 Track References (tref): Mp4Muxer.addTrackReference allows linking dependent metadata or aux tracks to primary video streams.
Chapter Extraction: QuickTime and Nero chapter from MP4 files (.m4a, .m4b), and Matroska chapters, are now extracted as Chapter metadata entries for audiobook and podcast navigation.

Please use the issue tracker to report any bugs, or if you have questions or feature requests. We look forward to hearing from you!

Inside Android Skills - Built for deprecation

2026-08-06T09:00:00.000-07:00

Posted by Jose Alcérreca, Developer Relations Engineer, Android Developer Relations

We released the official Android Skills in April, and the response surpassed all our expectations. In this blog post, I'll address some of the feedback we received, explaining the philosophy and methodology behind the project. Hopefully, this will also help you understand what happens behind the scenes when you install and use skills, allowing you to make better use of tokens and your own time.

Why are there so few official skills?

Currently, we only consider new skills when there's a verifiable knowledge gap in state-of-the-art (SOTA) models. Put simply: you don't need to teach the model what it already knows. (Though there are a few exceptions—read on!)

We’ve released around 20 official skills so far, and they intentionally target highly specific, fast-moving areas that standard models aren't fully grounded on yet—things like AGP 9, Navigation 3, advanced Camera APIs, and Perfetto SQL.

What about core, more general, skills? Every installed skill injects 100–200 tokens into the baseline context of every task you start. If that skill actually activates, that count can quickly jump into the thousands. In most cases, hoarding basic skills is both counterproductive and expensive. Before installing a skill for writing basic Kotlin or Compose, consider if your LLM of choice really needs it, or if it knows those topics well enough already.

Evaluating skills

Before their release, each skill is tested against a comprehensive set of evals that prove that the skill delivers clear value. These evals should pass when the skill is active, and fail otherwise. Evals are to skills what integration tests are to code.

timeout_s: 1200
repository:
  url: [redacted - internal git repo]
  working_dir: wear_compose_m3_empty_app
category_ids:
  - wear
prompt: |-
  Add a horizontal pager to MainActivity.kt. Have three pages in the pager. Each page should contain
  the text "Page 1", "Page 2", and "Page 3" respectively in the center of the screen.
commands:
  build:
    - ./gradlew assembleDebug
acceptance_criteria:
  project_builds: true
  llm_diff_judge:
    - Must use `HorizontalPagerScaffold`.
    - Each page should use `AnimatedPage` to wrap a `ScreenScaffold`.

Example eval that checks the correct implementation of a horizontal pager on a wear app

At a minimum, we test the skill in Android Studio using the latest Gemini Flash model. Depending on the skill, we also ensure compatibility with other models such as Gemini Pro and other agents such as Antigravity, and third-party systems.

All of the evals run with access to the Knowledge Base, so if the information is in the documentation, and models decide to search for it, we don't publish a skill for it.

Using the Android Knowledge Base (Android Studio or Android CLI)

If you develop Android apps, you should always use the Android Knowledge Base to have access to the official documentation. If you use the agent in Android Studio, it's already available as a tool, but if you use another agent, install Android CLI. Among other things, it contains the docs command, which gives your agent access to the official Android documentation. Having a single tool is much more efficient than installing hundreds of skills.

If your model is acting overconfident, and you want it to consult the documentation more often, a very common way to motivate it is to add "Always consult the official Android documentation when dealing with Android APIs" to your AGENTS.md file or equivalent. Of course, you can also force this by asking the agent to check the documentation directly in your prompts.

Why are pull requests disabled?

Because our evaluation framework depends on internal infrastructure that cannot be open-sourced, we are unable to accept direct pull requests for new skills—without this infrastructure, we would have no way to re-evaluate incoming PR changes. However, we actively monitor community feedback. If you want to report a bug, suggest an optimization, or request a new official skill, please file an issue!

When do core or basic skills make sense?

While SOTA models generally don't need basic skills, there are some scenarios where enabling core or community-built skills adds real value. For example:

You're using vague prompts: Skills amplify your intent. If you give a loose prompt like "add animations to this screen," a specific Compose animation skill can inspire the model, pushing it toward modern APIs or screenshot testing patterns it might not have otherwise considered.
You want to use smaller, cheaper models: Frontier LLMs are expensive. If you are offloading routine tasks to smaller open-weight models like Gemma 4, enabling basic skills fills the knowledge gaps that smaller parameters miss.
You're refactoring or reviewing legacy code: Models excel at generating code that works, but when editing old codebases, they often prioritize staying consistent with the surrounding legacy patterns over rewriting things with modern accuracy. A specialized reviewer agent equipped with core skills can help break that habit.
You deviate from the norm: LLMs love the standard "Google way" of architecting Android apps. If your team uses a highly customized view-layer architecture, the model will struggle to stay aligned. A custom skill explicitly describing your architecture goes a long way.

Where can I find core skills?

The Android community has your back. Chris Banes has a comprehensive collection of skills for Compose and Kotlin, Ivan Morgillo published a skill that audits Compose projects, and Jaewoong Eum created two on testing and performance.

Always download skills from reputable sources! I personally wouldn't trust repositories containing dozens or hundreds of Android skills as they're probably AI-generated and untested, and they could even contain malicious or biased instructions. Also, don't install general software engineering skills blindly; a lot of them are tailored for web development.

Goal: deprecation

Loosely paraphrasing Karpathy: Skills of today will be in the models of tomorrow. As SOTA models keep improving, we expect skills to be obsolete, especially those built around new APIs. To figure out when to retire them, we run our evals when new models drop. If they pass, we'll keep them around for a few months until most users have transitioned over.

Delivering safer, age-appropriate experiences on Google Play

2026-07-29T06:00:00.000-07:00

Posted by Paul Feng, VP of Product Management, Google Play

Providing a safe online experience and protecting users from harm is a top priority at Google Play. We take this responsibility seriously and have been investing continuously to offer baseline protections on our platform while also empowering parents with the tools they need to make decisions for their families. Importantly, we also want to empower Play developers with the capabilities to deliver age-appropriate experiences based on their app's content.

To support this, today, we are taking another big step in our ongoing partnership with parents and developers by announcing the expansion of the Google Play Age Signals API to all Play developers globally. Building on current availability in Brazil, we will expand this experience first to users in Australia and Canada by mid-August, with a full global rollout to all users later this year.

Empowering developers to create age-appropriate experiences

The Play Age Signals API is a privacy-preserving tool that puts parents in the driver's seat allowing them to share their child's age range (e.g. 16-17) directly with apps. It also enables adults to easily share their age when prompted by the app developer. In turn, developers receive the signals they need to tailor their own in-app safety experiences and content for users in an age-appropriate way.

We want to give developers the ability to choose the right protections for the nature of their app. A weather app, for example, shouldn't need the same safety settings as entertainment or media apps. Rather than enforcing one-size-fits-all rules, we give developers the flexibility to choose how they integrate safety signals. With this reliable signal, you retain complete agency to tailor your app's content, features, and settings to match your audience.

Users have a choice to share their age range in a privacy-friendly way

Simplifying controls for parents

Parents shouldn't have to manage complex safety settings across dozens of different apps to keep their children safe. The Play Age Signals API simplifies this by putting age-sharing controls in one place, directly inside the Google Family Link app. Parents have a choice to share their child’s age range, and if they choose to share, all Play apps that use Play Age Signals API can receive age signals. This lets children jump straight into age-appropriate content without parents having to manually configure settings inside these apps. Age ranges are never shared by default, and parents can update or turn off these settings at any time.

Centralized and easy way to manage age sharing settings for parents via Family Link App

Building on our broader safety tools

The Play Age Signals API builds upon a strong foundation of established safety features and strict policies we have long enforced on Google Play. Today, we already mandate that apps designed for families meet rigorous safety standards, and we continuously review and scan applications to ensure they are safe for children. For developers, we also offer built-in tools like Restrict Minor Access in the Play Console to help them manage who can discover their apps. For parents, Google Family Link remains a trusted, central dashboard where they can manage screen-time limits, PIN-based content filters, and app download approvals.

Expanding the Play Age Signals API globally adds a powerful new tool to our existing safety suite, helping parents and developers work together to make Google Play an even safer, more trustworthy place for families.

Celebrating 5 years of Jetpack Compose

2026-07-28T09:00:00.000-07:00

Posted by Rebecca Franks, Developer Relations Engineer, Nick Butcher, Product Manager, Loryn Hairston, Product Marketing Manager, Android

Today, we officially celebrate five years since the release of Jetpack Compose 1.0. From version 1.0, announced on July 28th, 2021, to our latest 1.11 release, we’ve seen the APIs evolve significantly over the years, and we’re taking a moment to celebrate.

When we officially announced the 1.0 release, we promised a simpler, faster, and more intuitive way to build native interfaces on Android. Looking back, it's safe to say that Compose didn’t just deliver on that promise, but also completely changed the Android ecosystem, with more than 68% of the top 1,000 apps using it in production today.

History

Over the last five years, Compose has grown steadily. In the early days, we explored showing you how to build layouts with the basic Box, Row, and Column. Today, we’ve expanded Compose to work not just on mobile devices, but to other form factors such as Compose for TV, WearOS, Glance for Widgets, and even display glasses with Jetpack Compose Glimmer.

We recorded an Android Developers Backstage episode with Clara Bayarri, Engineering Lead for Jetpack, and two former leads of the team, Romain Guy and Chet Haase, along with Tor Norbye, Senior Engineering Director. In this episode, they discuss the history of Compose and the early days of development.

Compose highlights over the years

Looking back

The beginnings of Compose were very different from what you know today. Two projects were happening in parallel inside the Android team.

At the time, the Views toolkit team was thinking of unbundling the UI Toolkit into a library to help with development speed, and make it easier for developers to adopt and control updates. Meanwhile, a team was working on a novel idea to build declarative layouts by embedding XML inside Kotlin, which looked something like this:

Those two efforts merged to produce what you know today - a fully declarative UI Toolkit that utilizes the power of a compiler plugin, runtime, and Kotlin:

@Composable
fun Newsfeed(stories: List<Story>) {
    LazyColumn {
        items(stories) { story ->
            Card {
                val author = story.author
                Image(painterResource(author.profilePhoto),
                    contentDescription = author.name)
                Text(author.name)
                Text(story.content)
                if (story.hasCommentsEnabled()) {
                    for(comment in story.comments) {
                        Text(comment.mainContent)
                    }
                }
            }
        }
    }
}

And you, the community, helped us very early on! Before 2021, Compose had a pre-alpha phase, which helped ensure Compose was fit to solve the problems of our developers.

One of our favorite memories is the Android Dev Challenge. We challenged the community to build four different tasks with Compose, filling our feeds with Puppy apps, clocks, and weather apps, and giving us a ton of direct feedback that helped shape the 1.0 release.

Compose has continued to evolve, from launching with a set of Material 2 components to now supporting Material 3 Expressive.

Material 2 in Compose

Material 3 Expressive in Compose

Looking ahead

As of today, Compose 1.11 is the latest version with 1.12 coming soon, offering so much more than 1.0, 5 years ago. This year, we introduced more adaptive APIs, such as FlexBox, Grid, MediaQuery, and Styles. These APIs let you advance to the next level of premium, adaptive UI development with Compose.

At Google I/O 2026, we announced that we are now Compose-first, meaning that all future UI development will happen only in Compose, while the Views toolkit enters maintenance mode. Material Design is also shifting focus entirely to Compose, signaling an end to the findViewById era.

Community is at the heart of Compose

Over the years, you’ve inspired us with creative examples of how you’ve used Compose, and we’d love to highlight a few more examples of where we’ve seen exciting work. JetBrains has been a great partner for Google with Compose, expanding Compose to work across platforms with Compose Multiplatform and enabling desktop, iOS, and web developers to also enjoy the benefits of Compose.

We’ve really enjoyed following our most beloved newsletters from JetpackCompose.app’s Dispatch, AndroidWeekly, to jetc - helping Android Developers stay up-to-date with the latest in the world of Compose and Android.

Another standout contributor is sinasamaki. They’ve created many delightful experiences using Compose, such as this fun ribbon modifier and the glitchy effect:

Saket Narayan has also always been an inspiration when it comes to creating useful tools for Compose, such as telephoto, a library featuring support for pan and zoom gestures and automatic sub-sampling of large images, or the latest library, Touch Robot, which allows you to easily test interaction animations:

paparazzi.gif(end = 3_000) {
  DebitCard(
    Modifier.testTag("card")
  )

  val touchRobot = rememberTouchRobot()
  LaunchedEffect(Unit) {
    touchRobot.onNode(hasTestTag("card")).performGesture {
      draw(
        path = createAndroidHeadPath(),
        duration = 3.seconds,
      )
    }
  }
}

/** A path drawing the Android head. */
fun createAndroidHeadPath(bounds: Rect): Path = TODO()

Jake Wharton, who has used Compose in innovative ways (like molecule, and even building UI with Compose for the terminal with mosaic). Chris Banes, who has built many Compose libraries over the years, with our most recent favourite - Haze for background blurring, and many of the Android Google Developer Experts like Akshay Chordiya, Huyen Tue Dao, and Katie Barnett, who’ve contributed to the success of Compose. But this is not about selecting individuals - there have been so many great contributors to the Compose codebase, and many of you continue to inspire us with your fun examples, libraries, and in-depth talks. Without the community, Jetpack Compose wouldn’t be as successful as it is today.

Cheers to the next 5 years, and more!

Jetpack Compose has grown from an experimental idea into the standard for Android UI Development. Thank you to the entire Toolkit team at Google, and to the incredible global developer community that wrote libraries, filed bugs, and pushed the boundaries of what declarative UI can do.

This week, we’ll be celebrating with some in-person birthday parties across the globe, and a live “Birthday party” on the Android Developers YouTube channel on July 30th at 13:00 UTC. During this time, we’ll hang out and discuss Compose and answer your questions!

Cheers to the next 5 years, and happy composing!

How R8 made Kotlin Coroutines on Android 2x faster

2026-07-27T06:00:00.000-07:00

Posted by Andrei Shikov, Senior Software Engineer, Android Toolkit and Jonathan Starup, Software Engineer, R8 Team

Starting from AGP 9.2.0, R8 optimizes most Atomic*FieldUpdater calls into Unsafe variants that perform 2x to 4x better on common operations. This has a particularly large impact on the kotlinx.atomicfu library that implements atomics for kotlinx.coroutines, making launching and cancelling coroutines up to 2x faster. In order to get the benefits, update your AGP to 9.2.0 or above.

With the majority of Android apps adopting Kotlin as their main language of choice, kotlinx.coroutines has become a de-facto standard for asynchronous programming. The library offers a well-designed and structured way of managing concurrent flows that is native to Kotlin. Jetpack Compose was no exception, adopting coroutines for managing pointer events, animations and other interactions. At the time of writing, most concurrent APIs in Compose call suspend functions under the hood and are launching and/or cancelling coroutines to handle updates.

As the Compose team started to investigate performance, coroutines were discovered to be a bottleneck for many operations that happen outside of composition. As an example, 80% of the time spent on creating and updating Modifier.clickable was consumed by launching and cancelling internal coroutines that handled InteractionSource updates. Based on those observations, much of early performance work was focused on removing coroutines from the default path and delaying initialization until necessary.

The cost of a coroutine

The easiest way to analyze a function's internal behavior on Android is to capture an Android Runtime (ART) method trace. An ART method trace is a tool that records the execution flow of an app, showing exactly which methods are called, their order, and how much time is spent in each, allowing developers to identify performance bottlenecks. For an empty LaunchedEffect { } call, it would look something like this:

LaunchedEffect method trace visualized in the Perfetto UI

The method trace above can be separated into three parts:

Initializing a new coroutine
Starting coroutine
Completing coroutine (because it exits immediately)

Cancelling LaunchedEffect is similar to normal completion, except it also creates a CancellationException.

From the profile above, one thing that is immediately suspicious is frequent calls into java.util.concurrent.AtomicReferenceFieldUpdater (purple or green boxes with j… labels). While each call is relatively fast, the frequency is concerning; any non-negligible overhead that is spread out across multiple invocations might add up to a noticeable regression. Zooming in on a call reveals that most of the time is spent on... reflection checks?

An up-close look at the method trace of AtomicReferenceFieldUpdater.get during LaunchedEffect initialization

Coroutines implement a lock-free tree structure for parent-child relationships that makes structured concurrency possible. Turns out, the kotlinx.atomicfu library implements lock-free atomic operations using a well-known JVM primitive, AtomicReferenceFieldUpdater. The updater uses a class reference and a field name to perform atomic operations at runtime, and it has to run several reflective safety checks to make sure the field exists and is accessible. Each operation in coroutines (starting, suspending, cancelling, completing) calls at least one atomic operation, so if it is slow, coroutines will not perform well.

Investigating AtomicReferenceFieldUpdater

But let's not get ahead of ourselves. AtomicReferenceFieldUpdater is actually well-optimized on JVM for over 10 years now, and method traces might capture overhead that is completely removed by a VM level optimization: just-in-time (JIT) or ahead-of-time (AOT) compilations. To verify performance, let's write a few benchmarks to measure the difference between atomic references from kotlinx.atomicfu and java.util.concurrent.atomic.

@RunWith(AndroidJUnit4::class)
class AtomicReferenceBenchmark {
    @get:Rule
    val benchmarkRule = BenchmarkRule()
    
    private val atomicReference = java.util.concurrent.atomic.AtomicReference(false)
    private val atomicRef = kotlinx.atomicfu.atomic<Boolean>(false)
    
    @Test
    fun atomicReference_compareAndSet() {
        benchmarkRule.measureRepeated { 
            atomicReference.compareAndSet(true, false)
            atomicReference.compareAndSet(false, true)
        }
    }

     @Test
    fun atomicRef_compareAndSet() {
        benchmarkRule.measureRepeated {
            atomicRef.compareAndSet(true, false)
            atomicRef.compareAndSet(false, true)
        }
    }

    /* measuring other methods from the method traces above */
}

Running this benchmark on a Pixel 5 (while ensuring AtomicReferenceFieldUpdater#compareAndSet is JIT compiled during warmup), yields the following results on Pixel 5 (API 33):

 50.7 ns  atomicReference_compareAndSet
135   ns  atomicRef_compareAndSet

The measurements confirm the gap, with kotlinx.atomicfu version clearly being approximately 2.7x slower. This confirms that ART does not perform any hidden optimization and reflective access checks add real overhead during runtime.

Looking back at the original method trace, the only meaningful work performed by the AtomicReferenceFieldUpdater is the internal call into Unsafe.getObjectVolatile that actually executes the underlying atomic operation. In most cases, the updater initializer is static, and can be proved to be always correct based on the structure of the surrounding class. Thus, one could statically analyze most of the AtomicReferenceFieldUpdater usages and replace them with an internal Unsafe variant during compilation. It also just happens that Android build toolchain has its very own optimizing compiler that can do exactly that.

Optimization with R8

The Atomic*FieldUpdater classes support subtle, dynamic and reflection-based use, but are often used in statically obvious patterns. This both explains the slow baseline performance and the want for optimization. R8 is a full-program optimizing compiler and is well-suited to see through the simpler patterns to skim the overhead of the reflective safety checks. R8 receives JVM bytecode after the Java or the Kotlin compiler, but to ease readability these examples are presented in Java syntax. This is why there are no type arguments for AtomicReferenceFieldUpdater.

class Example {
    volatile String data = "";
    static final AtomicReferenceFieldUpdater updater =
        AtomicReferenceFieldUpdater.newUpdater(Example.class, String.class, "data");

    void example() {
        // ...
        updater.compareAndSet(this, "", "new");
        // ...
    }
}

The base example creates a static final updater which accesses a volatile field with simple constant arguments for the holder, the type, and the name of the field. The reflection used is totally transparent. It is clear to see this updater references a valid field and that the site of the updater creation has valid access to the field.

In its essence, Atomic*FieldUpdater is a wrapper around a field offset and calls to Unsafe. The best case scenario for the optimization is to replace the updater field with an offset field and replace the updater calls with calls to Unsafe.

Optimizing Atomic*FieldUpdater

The optimization is implemented in three parts: Instrumentation, Replacement, and Clean-up.

Instrumentation

The first step is to introduce offset fields alongside the updater field in order to facilitate direct access via the Unsafe call.

static final long updater$offset =
    SyntheticUnsafe.UNSAFE.objectFieldOffset(Example.class.getDeclaredField("data"))

The field is accessed via reflection, and Unsafe is used to extract the field offset on the class. This code represents the internals of Atomic*FieldUpdater if you disregard reflection validation. Instead, the holder type of the updater and the field type of the volatile field are tracked statically in the compiler.

Note that the original field and its initialization are left as-is. The optimization process optimistically facilitates and optimizes uses and then later cleans up. This is a simple approach to the implementation but also allows partial optimization of updater fields, where some uses are left as they were while others are optimized.

Replacement

At this point in the compiler, after a suitable concurrency join point, we have a list of instrumented updater fields. This means that we can optimize each call site individually based on a few conditions. Consider an example call:

updater.compareAndSet(holder, expectedValue, newValue);

The conditions that Atomic*FieldUpdater requires are these:

Does updater come from an instrumented field? That is, can static analysis track the value of the object back to a field read of an instrumented updater?
Is holder the same class or a subclass of the originally defined holder type?
Is newValue the same class or a subclass of the originally defined field type?

If all conditions are met, then the call is replaced by a call to Unsafe without any of the reflection checks.

SyntheticUnsafe.UNSAFE.compareAndSwapObject(holder, Example.updater$offset, expectedValue, newValue)

This new call is faster and simpler but it differs from the original call in regards to its handling of null values in updater and holder. Unless statically ruled out, null-checks are inserted for both.

Clean-up

At this point, the holding class has the original updater field and the new offset field along with call sites that might use either one of the two. If none of the call sites were optimized, then the offset field should be removed and if all of the call sites were optimized, then the updater field should be removed. In both cases the initializing call should also be deleted. The deletion of unused fields and removal of dead code is already done in the compiler, but removing the initializing code here requires a few more tricks.

Both the call to newUpdater and getDeclaredField might have side effects as they can throw exceptions (and their implementation is also unknown since it depends on the API version). This means that by generic optimization, they cannot safely be removed. So this clean-up required explicit consideration of the instrumented fields, since those are statically known to be free of exceptions.

In the end, the simple updater example shown above looks like this after optimization:

class Example {
    volatile String data = "";
    static final long updater$offset =
        SyntheticUnsafe.UNSAFE.objectFieldOffset(Example.class.getDeclaredField("data"))

    void example() {
        // ...
        SyntheticUnsafe.UNSAFE.compareAndSwapObject(this, Example.updater$offset, "", "new")
        // ...
    }
}

Results

After these optimizations, kotlinx.atomicfu and most explicit uses of AtomicInt/Long/ReferenceFieldUpdater now match AtomicReference performance with R8 applied. In fact, it is even faster in some benchmarks; kotlinx.atomicfu has a compiler plugin that can inline atomic instances into fields, reducing allocations required to create an atomically updated field.

Jetpack Compose was the main beneficiary of this work. Compose runtime has a number of microbenchmarks that track coroutine performance very closely to catch performance regressions early. When the benchmarks were updated to a new version of R8, we noticed a 2x improvement when launching and cancelling coroutines in LaunchedEffect!

Benchmark graph illustrating the time taken when starting and cancelling coroutines in LaunchedEffect (lower is better). The change in the graph corresponds to an R8 update, showcasing 2x improvement.

Aside from that, the ART team is implementing these optimizations natively at the VM level. If your app is targeting API 37 and is running on a recent version of Android, it is possible that your device is already optimizing coroutines in a similar way. The coroutine benchmarks above observed ~15% improvement in performance after JIT updates in the recent versions of ART.

Your app will receive this optimization by default when upgrading to AGP 9.2.0 or by using R8 9.2.0 directly. For more information, see D8 dexer and R8 shrinker.

Optimize your apps for the next generation of Samsung Galaxy devices

2026-07-22T12:00:00.000-07:00

Posted by Fahd Imtiaz, Senior Product Manager and Miguel Montemayor, Developer Relations Engineer, Android Developer Experience

Today at Galaxy Unpacked, Samsung unveiled its latest lineup of foldable and wearable devices. For developers, this means that the variety of form factors, screen sizes, and device postures your app needs to support is expanding once again.

With devices like the Galaxy Z Fold8, the ecosystem is expanding to include hardware with a landscape-first natural orientation and a wider aspect ratio in its main display state. Whether a user is unfolding a large display, flipping open a cover screen, or glancing at their wrist, users expect a flawless experience. To help you meet this moment, we’re sharing actionable guidance and new tooling updates to enable you to build adaptively proactively.

Rethink layout architecture for dynamic displays, including ultra-wide foldables

Building for the latest foldables means dropping assumptions about display orientation and size. This is especially true for the Galaxy Z Fold8, which adopts an ultra-wide display, adding to the variety of aspect ratios to account for. Devices with this landscape-first natural orientation show the limitations of hardcoded layout rules when users unfold the device. That’s why we’ve introduced dedicated guidance for building for landscape foldables and trifolds.

To build a responsive UI that handles these physics seamlessly, focus on the following core pillars:

Build fluid, adaptive layouts: Wide aspect ratios and compact vertical heights require fluid UIs that scale responsively. Our updated adaptive design guidance advises considering the window class width first to determine layout changes, then adjusting for height. To let individual components fluidly adapt to the grid, structure your layout using flexible containers that allow your content to automatically wrap, span, and reflow. For design inspiration browse our adaptive sample app and dual-screen design galleries.
Track actual app space: Your app's display space rarely matches the physical device size, especially on an ultra-wide screen during multi-window, split-screen, or multitasking states. Sometimes even the orientations differ. Leverage Window Size Classes using the Jetpack Window Manager library to calculate the exact space your app occupies.

Leverage the latest Jetpack Compose Update: Start by adopting the stable Jetpack Compose April '26 release (Compose BOM version 2026.04.01).Take advantage of the new structural layout tools to manage complex architectures. The new Grid API allows you to define dynamic tracks and column spans without the performance overhead of a lazy list. Pair Grid with the new FlexBox layout API to easily handle multi-axis alignment and dynamic item wrapping. You can also use the new MediaQuery API to adapt your UI to its environment, using conditions to detect signals like device posture, window size, and keyboard types.
Make your app fold aware: Use the Jetpack WindowManager library, which provides an API surface for foldable device window features such as folds and hinges. When your app is fold aware, it can adapt its layout to avoid placing important content in the area of folds or hinges and use folds and hinges as natural separators.
Maintain app continuity: Avoid breaking the user journey when the device configuration shifts. Retain your UI state using ViewModel to ensure smooth transitions when a user folds or unfolds their device.

Ensure seamless camera capture on foldable devices

Camera implementation on foldables brings unique hardware quirks. Moving from a compact outer display to an expanded inner display introduces distinct layout aspect ratios while device rotation remains unchanged. If an app assumes a fixed portrait relationship between the camera sensor and the device layout, the app will likely suffer from sideways, stretched, or cropped previews during these folding transitions.

When optimizing your app's media pipeline, migrate your capture experiences to CameraX using the CameraX migration skill. The library’s PreviewView automatically handles sensor orientation, device rotation, and scaling behind the scenes. This guarantees a clean, stable preview regardless of how the user holds or positions the device. If you are maintaining an existing Camera2 codebase, integrate the CameraViewfinder library to apply these complex aspect ratio and rotation transformations automatically without needing a total architecture overhaul.

Extend glanceable interactions to Wear OS 7

The opportunity to build for this new generation of devices extends right to the wrist. Launching with Wear OS 7, Wear Widgets give you a fresh surface to provide users with instant, glanceable access to their essential updates. You can build these highly expressive experiences using Jetpack Glance and RemoteCompose. Crucially, Widgets built with this framework can now populate multi-widget tiles that were previously reserved for first-party widgets.

Build intelligent features

Gemini intelligence already completes tasks on users’ behalf, and you can experiment with the intelligence system by sharing your apps capabilities.

Samsung’s new foldable devices come with Gemini Nano 4, our latest on-device model. Nano 4 provides support for over 140 languages, better multimodal understanding, and much more. Use ML Kit’s Prompt API with advanced features like structured output and thinking mode to build intelligent features on-device.

Start optimizing today

The tools and frameworks are ready to help you optimize your app for all screen sizes. Begin by exploring our guidance for building adaptive apps to learn more about core adaptive design principles.

To dive deeper, check out our comprehensive YouTube playlist. Finally, ensure your app delivers a flawless, premium experience on the newest form factors by reviewing our dedicated quality guidelines for trifolds and landscape foldables and WearOS.

Unfold the future today!

Build intelligent Android apps: Cloud and hybrid inference

2026-07-21T06:00:00.000-07:00

Posted by Thomas Ezan, Jolanda Verhoef, Caren Chang, Senior Developer Relations Engineers, Android Developer Relations

Welcome back to the blog post series "Build intelligent Android apps" where we take a basic Android app and transform it into a personalized, intelligent, and agentic experience. In our previous post we explored how to build intelligent on-device features using Gemini Nano through ML Kit's Prompt API.

In this post, we will look at how you can leverage Firebase AI Logic to build cloud-hosted and hybrid AI features:

Grounding answers in real-world context
Routing requests dynamically between cloud and local execution using hybrid inference
Translating content with custom routing systems

Sometimes a use case requires AI models with greater world knowledge, a much larger context window, or the ability to handle complex queries. In those scenarios, we can leverage cloud models.

Other times, you want the best of both worlds: using hybrid inference to run on-device when available to lower costs, while falling back to the cloud to ensure compatibility for all devices.

Cloud and hybrid features in Jetpacker: Museum assistant with web grounding, hybrid restaurant review drafting, and support chat featuring custom-routed live translation.

Let’s look at how we implemented three cloud and hybrid features in Jetpacker:

a museum assistant with web grounding
hybrid restaurant review drafting
hotel support chat featuring custom-routed live translation.

Use LLM grounding for up-to-date informationMuseum assistant chatbot with LLM grounding

The Museum assistant is an interactive chatbot designed to help users plan their museum visits. It provides visitors with up-to-date details regarding specific exhibits, current opening hours, ticket pricing, and more.

Museum assistant is a chatbot that answers questions, such as

‘How can I get a ticket discount for Le Louvre?’

When building AI features, getting the model to answer with fresh, accurate, and specific real-world information is a common challenge. While cloud models possess massive amounts of world knowledge, they might not know about seasonal exhibits or the current day’s opening hours.

Grounding data is added to the context window to enable the model

to answer questions correctly and accurately.

To bridge this gap, we can use grounding techniques to add extra context to the model’s context window. The Firebase AI Logic SDK supports three types of grounding:

URL grounding: Grounding responses using content from a specific webpage (e.g. current ticket prices or museum rules).
Google Search grounding: Letting the model query the real-time Google search index for up-to-date details.
Maps grounding: Using Google Maps location data.

In Jetpacker, we dynamically construct the available tools based on enabled feature flags and initialize the generative model using the Firebase AI SDK:

// implementation("com.google.firebase:firebase-ai-logic")

private var toolList = mutableListOf<Tool>()

init {
    if (ENABLE_SEARCH_GROUNDING) {
        toolList.add(Tool.googleSearch())
    }
    if (ENABLE_URL_GROUNDING) {
        toolList.add(Tool.urlContext())
    }
}

private val generativeModel = Firebase.ai(backend = GenerativeBackend.googleAI())
    .generativeModel(
        modelName = "gemini-3-flash",
        systemInstruction = content {
            text("You are a helpful museum assistant answering questions about a museum. Use plain text.")
        },
        tools = toolList
    )

When the user queries the assistant, if URL grounding is enabled, we append the specific museum resource URLs directly into the prompt:

val groundingText = if (FeatureFlags.ENABLE_URL_GROUNDING) {
    "\n If the following message above is about the rules and terms to visit Le Louvre, " +
    "if needed answer this urls ${urlList.joinToString()}"
} else {
    ""
}

val prompt = "$text $groundingText"

var response = chat.sendMessage(prompt)

Hybrid inference: On-device review generation with Maps deep link

Not every AI task requires a cloud-based model, and not every device is online. To help developers balance latency, cost, and offline availability, we recently introduced the Firebase API for Hybrid Inference.

In Jetpacker, the restaurant review feature lets users review select topics and automatically drafts a review. To enable this for all users, we prioritize local execution with Gemini Nano, and fall back to cloud models on devices that don’t support Gemini Nano.

The restaurant review feature uses hybrid inference to draft a review based on topics

// implementation("com.google.firebase:firebase-ai-logic")
// implementation("com.google.firebase:firebase-ai-ondevice:16.0.0-beta03")


// Initialize the model with hybrid routing configuration
val reviewModel = Firebase.ai.generativeModel(
    modelName = "gemini-3.1-flash-lite",
    onDeviceConfig = OnDeviceConfig(
        inferenceMode = InferenceMode.PREFER_ON_DEVICE
    )
)

The Hybrid Inference API supports four distinct routing modes:

PREFER_ON_DEVICE: Prioritizes local execution and falls back to cloud if Gemini Nano is unavailable.
PREFER_IN_CLOUD: Prioritizes cloud execution and falls back to on-device if the device goes offline.
ONLY_ON_DEVICE: Restricts execution strictly to the device.
ONLY_IN_CLOUD: Restricts execution strictly to the cloud.

Once the review is generated, we copy it to the clipboard and use an intent to open Google Maps directly to the restaurant's review page, providing a seamless user experience:

private fun copyAndOpenMapsReview(context: Context, reviewText: String, placeId: String) {
    val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
    val clip = ClipData.newPlainText("User Review", reviewText)
    clipboard.setPrimaryClip(clip)

    val uri = Uri.parse("https://search.google.com/local/writereview/mobile?placeid=$placeId")
    val intent = Intent(Intent.ACTION_VIEW, uri).apply {
        setPackage("com.google.android.apps.maps")
    }
    context.startActivity(intent)
}

Custom hybrid routing: Hotel support chat translation with simulated personas

The hotel support chat was built to let users finalize logistics and check on hotel details. This feature uses system instructions to configure a localized receptionist assistant. By passing specific information—such as the preferred language and hotel information—in the instructions, we can set up a conversational persona representing a specific hotel.

private val generativeModel = Firebase.ai(backend = GenerativeBackend.googleAI())
    .generativeModel(
        systemInstruction = content {
            text("""
              You are a helpful hotel receptionist at $hotelName only speaking $language. 
              Answer politely in $language. The bar closes at 10pm and breakfast is from 7am to 10am.
              There's someone at the desk 24/7. You can retrieve your luggage from the storage room 
              at the back of the lobby at any time.
              """)
        },
        modelName = "gemini-3-flash-preview"
    )

Because receptionist responses are in the hotel's local language (for example, French for Hotel Le Meurice in Paris), we need to translate messages to the user’s preferred language.

Hotel support chat messages are automatically translated to the user’s preferred language

While hybrid models can configure simple routing preferences, complex scenarios require custom routing logic. In Jetpacker, we implement a custom routing stack that takes into account:

Language identification: Using the on-device ML Kit Language Identification API, we can detect the incoming message language.
On-device translation (Gemini Nano): ML Kit’s Prompt API lets us translate common language pairs directly on the device, saving bandwidth and cloud cost.
Cloud translation (Gemini 3 Flash): For more complex languages, we use Gemini Flash 3 to get a higher quality translation.

// implementation("com.google.android.gms:play-services-mlkit-language-id:17.0.0") 

// ML Kit for Language Identification (powered by Google Play Services)
private val languageIdentifier = LanguageIdentification.getClient()

// On-device translator model (prefer Gemini Nano) for translating common language pairs
private val hybridTranslationModel = Firebase.ai(backend = GenerativeBackend.googleAI())
    .generativeModel(
        modelName = "gemini-3-flash",
        onDeviceConfig = OnDeviceConfig(mode = InferenceMode.PREFER_ON_DEVICE)
    )

// Cloud translator model for more complex language pairs
private val cloudTranslationModel = Firebase.ai(backend = GenerativeBackend.googleAI())
    .generativeModel(
        modelName = "gemini-3-flash"
    )

When a message needs to be translated, we identify the source language and apply our custom routing logic, executing either on-device or cloud translation:

fun translateMessage(message: SupportChatMessage) {
    viewModelScope.launch {
        // 1. Detect language using ML Kit Language Identification
        val sourceLang = try {
            Tasks.await(languageIdentifier.identifyLanguage(message.text))
        } catch (e: Exception) {
            "Undefined"
        }

        // 2. Custom routing: we've verified the translation quality for English and Korean with Gemini Nano, and will translate message on-device for those two languages
        val routeToCloud = sourceLang != "en" && sourceLang != "kr"

        val prompt = "Translate the following text to $selectedLanguage. Just return the translated sentence: ${message.text}."

        val (translatedText, routePrefix) = if (routeToCloud) {
            val result = cloudTranslationModel.generateContent(prompt)
            result.text to "[Cloud]"
        } else {
            val result = hybridTranslationModel.generateContent(prompt)
            result.text to "[On-Device]"
        }

        if (translatedText != null) {
            _translations.update { current ->
                current + (message.id to "$routePrefix: $translatedText")
            }
        }
    }
}

In this example, the custom routing logic only takes into consideration the translation’s source and target language. However, based on your app’s use case, you can expand the routing logic to include other factors such as the on-device model version, network connectivity, battery status, and more.

Securing the AI Pipelines: Firebase App Check

Lastly, using AI in the cloud opens up possibilities of API key abuse or unauthorized billing. To secure API calls, we integrated Firebase App Check using both Play Integrity (production) and the local Debug Provider (for local development or emulators).

In the JetPackerApplication.kt file, we install the debug provider at startup and trigger anonymous authentication to establish a secure user session:

//  implementation("com.google.firebase:firebase-appcheck-playintegrity") 
//  implementation("com.google.firebase:firebase-appcheck-debug")  
//  implementation("com.google.firebase:firebase-auth") 

override fun onCreate() {
    super.onCreate()
    Firebase.initialize(context = this)
    Firebase.appCheck.installAppCheckProviderFactory(
        DebugAppCheckProviderFactory.getInstance()
    )
    Firebase.auth.signInAnonymously()
}

When building locally on an emulator, App Check prints a local token secret to logcat:

Enter this debug secret into the allow list in the Firebase Console: a8c2dd4c-xxxx-xxxx-xxxx-ef6c114ba27e

Once registered in the Firebase console, local requests are fully verified and authenticated by App Check, protecting our backend while letting us test the app locally.

Conclusion

By combining cloud model capabilities (grounding, system instructions) with on-device capabilities (hybrid routing, translation, security app checks), we created a travel app that is smart, secure, and available offline.

Check out the full source code for Jetpacker on GitHub, and explore the Firebase documentation to get started:

Firebase AI Logic Documentation
Firebase Hybrid Inference API

Learn more

Check out the other parts of this blog post series:

Part 1: Introduction of the app and a high-level overview.
Part 2: On-device intelligence. Deep-dive into ML Kit’s GenAI APIs and Gemini Nano to build privacy-first features like itinerary summarization, receipt parsing, and local audio processing.
Part 3 (this post!): Hybrid and cloud reasoning. Explore how to use Firebase AI Logic to ground LLM answers in real-world data like Google Maps and web context.
Part 4: System integration. Integrating with the Android intelligence system using AppFunctions.
Part 5 (coming soon): In-app agentic workflows. Extend the app with an end-to-end booking assistant powered by A2UI and ADK.

Interested in more on Android Development? Follow Android Developers on YouTube or LinkedIn!

All code snippets in this blog post follow the following copyright notice:

Copyright 2026 Google LLC.
SPDX-License-Identifier: Apache-2.0

Build intelligent Android apps: Integrate into Android's intelligence system using AppFunctions

2026-07-21T06:00:00.000-07:00

Posted by Ben Weiss, Senior Developer Relations Engineer, Android Developer Relations

Welcome back to the blog post series "Build intelligent Android apps" where we take a basic Android app and transform it into a personalized, intelligent, and agentic experience. In our previous post, we explored how to leverage Firebase AI Logic to build cloud-hosted and hybrid AI features.

Traditional mobile UIs excel at focused, hands-on tasks, and the Android intelligence system is introducing complementary features to make complex, multi-step actions even easier. By supplementing traditional user interfaces, AppFunctions provide a powerful new entry point: A privileged agent on the device can access app features in the background. This can be particularly helpful when users are driving, walking or otherwise multitasking.

In this article, we'll show you how we designed and integrated these capabilities into our travel planning app, JetPacker, using Android AppFunctions. We'll explore the rationale behind our feature choices, discuss the specialized tooling we used to accelerate development, and dive into the code that makes it all work.

Designing AI-ready features: making choices that matter for your users

To select which features to provide to the intelligence system, we looked for tasks where a voice or text command is objectively faster than tapping through screens. In this side-by-side screen recording you can see this contrast perfectly: on the left, a user tapping through multiple screens to log an expense; on the right, the same task completed instantly in the background via a privileged agent.

Our first choice was expense tracking. Logging a coffee expense during a trip usually takes quite a few taps—unlocking the phone, opening the app, finding the active trip, navigating to the expenses tab, tapping the add button, taking a picture of the receipt, and checking the result. By providing the addExpense and getExpenses features as AppFunctions, the system agent handles the heavy lifting. When the user says, "Add a five-dollar coffee expense to my Paris trip," the agent automatically searches for the correct trip ID in the background and inserts the expense, skipping the manual UI flow entirely.

We also prioritized itinerary management. Finding what activity is next on a busy trip itinerary usually requires scrolling through a dense timeline view. By providing getItinerary and addItineraryEvent to the system, the user can simply ask, "What am I doing next in Paris?" and get an immediate answer.

Finally, we focused on hands-free note capturing. Typing out reminders or notes while walking down a busy street is difficult and unsafe. Exposing a voice note capability allows the user to say, "The flight was amazing, I saw a beautiful sunset and managed to sleep well," and the privileged agent automatically transcribes and saves it directly into the travel database using the addVoiceNote AppFunction.

Android MCP powered by AppFunctions

This entire experience is built on Android MCP. Under this design, the app acts as a local MCP server. Rather than remote APIs, you provide your app features directly to the on-device intelligence system.

Android AppFunctions is the API that brings this concept to life. It reads annotated Kotlin functions and compiles them into type-safe, sandboxed tool definitions that the privileged agent can discover and invoke locally on the device.

Diagram highlighting our apps, the android platform, and system agents coordinate AppFunctions.

Under the Android MCP model, your app acts as a local MCP server that exposes structured tools, while the Android platform serves as the central tool registry. On the MCP client side, agent apps are registered with the intelligence system after being granted system-privileged permissions to access the registry.

When a user interacts with a registered agent, its LLM determines if the request can be handled by an AppFunction, queries the platform's metadata, and executes the appropriate registered functions in the background. This local MCP client-server design gives you full control: you choose exactly which features are accessible to the agent, keeping the rest of your app's data private.

How we accelerated development with Android skills

To streamline the integration process, we leveraged the AppFunctions development skill. The AppFunctions development skill is a complete development companion. It guided us through the entire lifecycle: mapping Kotlin data classes to serialize parameters, generating the necessary Service entry points, refining our KDoc documentation to ensure the LLM understands parameter boundaries, and setting up automated testing using ADB.

Providing app features to the intelligence system

Enough with the theory, let's dive into the implementation.

Configuration and dependency setup

We begin by adding the AppFunctions dependencies. One for the API and one for the Kotlin Symbol Processing compiler.

implementation("androidx.appfunctions:appfunctions:1.0.0-alpha10")
ksp("androidx.appfunctions:appfunctions-compiler:1.0.0-alpha10")

Modeling custom data types

Any custom object exchanged with the agent must be annotated with @AppFunctionSerializable. In our TripSerializable.kt file, we define our trip data model:

@AppFunctionSerializable(isDescribedByKDoc = true)
data class TripSerializable(
    /** The trip's unique identifier. */
    val id: String,
    /** The trip's title. */
    val title: String,
    /** The trip's destination location. */
    val location: String,
    /** The trip's start date in milliseconds. */
    val startDate: Long,
    /** The trip's end date in milliseconds. */
    val endDate: Long,
    /** A list of participants. */
    val participants: List<String>,
)

Providing features using the @AppFunction annotation

Next, the skill wrote the Kotlin functions that perform the database queries and annotate them with @AppFunction. We can view this in searchTrip:

/**
 * Looks for trips based on optional filters like id, title (name), location, and dates.
 *
 * @param id The unique identifier of the trip.
 * @param title The title or name of the trip.
 * @param location The destination location.
 * @param startDate The minimum start date in milliseconds.
 * @param endDate The maximum end date in milliseconds.
 * @return A list of trips matching the filters.
 */
@AppFunction(isDescribedByKDoc = true)
suspend fun searchTrip(
    id: String? = null,
    title: String? = null,
    location: String? = null,
    startDate: Long? = null,
    endDate: Long? = null
): List<TripSerializable> {
    return withContext(Dispatchers.IO) {
    // implementation
}

Since AppFunctions run on the UI thread by default, we use withContext(Dispatchers.IO) to switch to a background dispatcher. Additionally, we refine our KDoc to use clear, imperative verbs and specify parameter constraints. This documentation compiles directly into the tool's schema, which the privileged agent uses to resolve parameters and handle runtime errors.

The service entry point and Hilt integration

To register these features with the intelligence system, we create an abstract base class that extends AppFunctionService. We annotate it with @AppFunctionServiceEntryPoint:

@RequiresApi(36)
@AndroidEntryPoint
@AppFunctionServiceEntryPoint(
    serviceName = "JetPackerAppFunctionService",
    appFunctionXmlFileName = "jetpacker_app_function_service"
)
abstract class BaseJetPackerAppFunctionService : AppFunctionService() {
    @Inject internal lateinit var tripDao: TripDao
    // DAOs and database references are injected here...
}

During compilation, KSP generates the final concrete service subclass, JetPackerAppFunctionService, as declared with the serviceName parameter. We also register app_metadata.xml in the app's manifest. This file provides global operational rules for JetPacker's declared AppFunctions.

Testing and verifying your AppFunctions

Once implemented, you should verify that your AppFunctions are registered and working correctly.

Running devices or emulators with Android 17 or newer, you can use ADB commands from your terminal to list and invoke your functions. Running adb shell cmd app_function list-app-functions displays all registered functions for your package. You can then execute a specific function and test its database integration by running adb shell cmd app_function execute-app-function while passing a raw JSON parameters string.

Instead of these ADB commands, you can also use the AppFunctions Testing Agent to inspect your configuration, list and execute AppFunctions, and even see how your AppFunctions behave in a real conversational flow.

Wrapping it up

When thinking about app features that can be contributed to the intelligence system using AppFunctions requires a slight shift in how we think about code and documentation. AppFunctions enable you to use this new interaction model for apps, which allows using an agent to access app features..

First, the AppFunctions development skill is an essential lifecycle tool, helping you discover features, implement and refine AppFunctions for your apps. Second, KDoc comments are a compiled API asset; clear parameter descriptions directly impact the execution accuracy of the system agent. Finally, Android MCP provides local-first execution allowing apps to safely collaborate with AI agents.

Contributing app features through AppFunctions makes your application ready for the intelligence system. Let us know how you are adapting your apps for the agentic era!

Learn more

Check out the other parts of this blog post series:
Part 1: Introduction of the app and a high-level overview.
Part 2: On-device intelligence. Deep-dive into ML Kit’s GenAI APIs and Gemini Nano to build privacy-first features like itinerary summarization, receipt parsing, and local audio processing.
Part 3: Hybrid and cloud reasoning. Explore how to use Firebase AI Logic to ground LLM answers in real-world data like Google Maps and web context.
Part 4 (this post!): System integration. Integrating with the Android intelligence system using AppFunctions.
Part 5 (coming soon): In-app agentic workflows. Extend the app with an end-to-end booking assistant powered by A2UI and ADK.

Interested in more on Android Development? Follow Android Developers on YouTube or LinkedIn!

All code snippets in this blog post follow the following copyright notice:

Copyright 2026 Google LLC.
SPDX-License-Identifier: Apache-2.0

Build intelligent Android apps: Introduction to Jetpacker

2026-07-21T06:00:00.000-07:00

Posted by Jolanda Verhoef, Senior Developer Relations Engineer, Android Developer Relations

Building GenAI features in your app usually means navigating through various models, APIs and architecture choices:

Execution location: Where does your model run? On device, in the cloud, or both?
Complexity: How complex is your setup? Are you doing a single inference call or do you need a more agentic flow?
In-app or Android System: Should your feature be built into your Android app or does it fit better as an Android system integration?

In this blog post series we'll navigate these choices with you. We will take you along on a journey, starting with a basic mobile app and transforming it into a personalized, intelligent, and agentic experience.

Jetpacker: a demo travel app

Jetpacker is a technical showcase app that our team built from the ground up for this year's Google I/O (built using Antigravity). At its core, Jetpacker helps users plan, explore, and enjoy their next big adventure. It shows an overview of your trips, the itinerary of each trip, and details of each event on that trip. Of course following all best practices of Android development, including a beautifully expressive Material UI design.

And best of all? It's fully open source!

Today we are publishing a series of technical blog posts diving deep into each of these features. We’ll provide detailed implementation steps, code snippets, and architectural insights to help you build your own intelligent Android applications.

On-device intelligence

On-device features in Jetpacker: Summarizing trip itineraries, managing expenses, and voice notes

Using an on-device model comes with no additional cloud inference costs, means you don't have to worry about internet connectivity, and lets users be confident that private information will be processed locally, on the device, without any of their data being sent to the cloud.

In Jetpacker, we chose on-device inference for three of our features:

The trip overview feature transforms a messy, multi-day itinerary into a concise, actionable summary. It leverages Gemini Nano through the ML Kit GenAI APIs to process data locally on the device. We consider this a nice-to-have feature where we don't want to incur extra cloud costs, making on-device inference the right choice.
The expense tracker automatically extracts structured data from receipt images to help users track their travel spending. It uses the multimodal capabilities of Gemini Nano 4 through the ML Kit GenAI APIs. We choose an on-device solution so that any privacy-sensitive information on the receipt images never leaves the user's device.
The audio diary records, transcribes, and categorizes voice notes into relevant trip activities. It is powered by the ML Kit Speech Recognition and GenAI Prompt APIs. We chose an on-device solution for privacy and connectivity reasons.

Cloud & hybrid inference

Cloud and hybrid features in Jetpacker: Museum assistant with web grounding, hybrid restaurant review drafting, and hotel support chat featuring custom-routed live translation.

Sometimes your use-case requires AI models with greater world knowledge or a much larger context window and with greater ability in handling complex tasks. In that case, we can switch from running an on-device model to using a cloud model instead.

Or, if you want to get the best of both worlds, you can use hybrid inference to dynamically choose either a cloud or on-device model at runtime. This allows us to lower costs by moving inference to the device when it is available, but at the same time support all Android devices running the app.

In Jetpacker, we implemented several features using cloud or hybrid inference:

The place Q&A feature answers user questions about specific locations by grounding responses in real-world data. It uses Firebase AI Logic integrated with Google Maps and web context. Using a cloud model is necessary here for its greater world knowledge.
The review drafting feature helps users compose detailed reviews for the places they have visited. It leverages both on-device and cloud models through Firebase AI Logic's new Hybrid inference API. This is a feature we wanted to make available to all app users, so we're using a cloud model as a fallback when an on-device model is unavailable.
The automatic chat translation dynamically translates chat messages in real time to facilitate seamless communication, demonstrating custom hybrid inference logic. Again, we want this feature to be available to all app users, but at the same time have some specific considerations on when to choose on-device versus cloud.

System integration

While not a feature you see in the app itself, the Android system integration opens up the app's core capabilities directly to the Android operating system. It uses the AppFunctions API to integrate with system-level intelligence.

In-app agentic workflows (coming soon!)

The booking assistant shows several in-progress flight bookings, asking the user for input before making a final booking.

Agenticness introduces a higher level of autonomy, enabling models to act as agents. Instead of a single inference call, an agent works towards a specific goal via an orchestration loop that allows it to reason, use tools, and adapt its path. Depending on your requirements, these intelligent agents can run either in the cloud, directly on-device, or in a hybrid setup.

For Jetpacker we added a booking assistant that automates end-to-end booking workflows directly within the application to streamline reservations. It is built using A2UI and ADK running in the cloud. The Android app functions as a front-end to the multi-agentic system running in the cloud.

Learn more

Check out the other parts of this blog post series:

Part 1 (this post!): Introduction of the app and a high-level overview.
Part 2: On-device intelligence. Deep-dive into ML Kit’s GenAI APIs and Gemini Nano to build privacy-first features like itinerary summarization, receipt parsing, and local audio processing.
Part 3: Hybrid and cloud reasoning. Explore how to use Firebase AI Logic to ground LLM answers in real-world data like Google Maps and web context.
Part 4: System integration. Integrating with the Android intelligence system using AppFunctions.
Part 5 (coming soon): In-app agentic workflows. Extend the app with an end-to-end booking assistant powered by A2UI and ADK.

Interested in more on Android Development? Follow Android Developers on YouTube or LinkedIn!

Build intelligent Android apps: On-device inference

2026-07-21T06:00:00.000-07:00

Posted by Caren Chang, Developer Relations Engineer, Android Developer Relations

Welcome back to the blog post series "Build intelligent Android apps" where we take a basic Android app and transform it into a personalized, intelligent, and agentic experience. In our previous post we introduced Jetpacker, the demo app we'll use throughout this series.

In this blog post, we will share how you can use Gemini Nano through ML Kit’s Prompt API to build intelligent on-device features.

Building intelligent on-device features refers to the ability to process prompts and data directly on a device without sending data to a server. This offers a few advantages:

User data can be processed locally on the device, preserving user privacy
Functionality of the model is reliable even with spotty or no internet connection
No additional cloud inference cost, since everything runs on the user’s hardware

With the benefits of on-device in mind, we identified three features to add in Jetpacker that can improve the user experience: summarizing trip itineraries, managing expenses, and capturing voice notes.

On-device features in Jetpacker: Summarizing trip itineraries, managing expenses, and voice notes

High quality tailored summarization of short texts

The itinerary screen gives users a quick overview of all activities for a given trip. Since this screen contains a lot of information, it can quickly become overwhelming. To help users prepare without feeling overwhelmed, we can add a ‘Get ready for your trip’ section at the top.

The romantic Paris trip is summarized as a classic Parisian adventure blending art, sights, and delicious food. A tip and some useful phrases are also added.

By inputting a trip itinerary and asking an LLM to summarize it, we can generate a quick summary of the trip along with packing tips and useful local phrases. This is a great use case for an on-device model for several reasons:

Performance and quality: Both the input and output text are relatively short. With that, we can expect the performance and quality of an on-device solution to be on par with more powerful cloud models.
Scalability: Shifting inference on-device allows us to scale this feature from a few users to millions without worrying about managing increasing cloud inference costs.
Low latency and reliability: On-device inference guarantees low latency, providing a reliable experience even when users are offline.

To build with on-device, we use Gemini Nano, Google’s most efficient model optimized for mobile devices. Gemini Nano was first introduced a few years ago, and is now running on over 140 million devices. The latest version of the model, Gemini Nano 4, is built on the architecture foundation of the recently released Gemma 4 model, and is further optimized for maximum battery and performance efficiency.

Using ML Kit’s Prompt API, we can take advantage of Gemini Nano 4’s new model capabilities to prototype our on-device features. We’ll create a prompt that includes the itinerary of a trip and ask the model to generate a summary along with any preparation tips.

// implementation("com.google.mlkit:genai-prompt:1.0.0-beta3") 

// Define the configuration for Gemini Nano 4 E2B preview model
val previewFastConfig = generationConfig {
    modelConfig = modelConfig {
        releaseStage = ModelReleaseStage.PREVIEW
        preference = ModelPreference.FAST
    }
}

val geminiNano2BPreviewModel = Generation.getClient(previewFastConfig)

val tripItinerary = ...

val getReadyForYourTripSummary = geminiNano2BPreviewModel
 .generateContent("Given this trip itinerary: $tripItinerary, 
     generate the following: overall vibe, tips on how to prepare for this
     trip, and common short phrases to learn for the trip.")

Finding the optimal prompt usually requires some iteration, and the AICore app is perfect for this step in the process. After opting into the developer preview option for AICore, we can download preview models such as Gemini Nano 4 to test prompts and see the model’s expected outputs. With a few iterations on the prompt, we were able to improve the speed of the response from 13 seconds to under 2 seconds! Check out the final code implementation and prompt here.

The first iteration of our prompt generated way too many tokens, and optimizing it helped keep responses quick and to the point.

Local processing for sensitive user input

Next, to help users enjoy their trip even more, we’ll build a simple expense manager that takes the manual work out of sorting through receipts and calculating budgets.

Taking a photo of a restaurant bill, data is parsed and shown in the expense overview screen of the app.

Since receipts might contain sensitive information like credit card number and addresses, this is another great use case for an on-device solution. With on-device, users can be confident that private information will be processed locally on the device without any of their data being sent to the cloud.

In addition, Gemini Nano 4 has improved model capabilities for multimodality, especially for image understanding tasks like OCR and visual data extraction, making it a great solution for tasks like extracting information from receipts.

For this use case, the prompt will analyze an image of the receipt, and output information such as: a generated title, amount spent and category of the expense. To ensure the model outputs the information in the preferred format, we can use ML Kit’s Structured Output API to seamlessly output a Kotlin data object that we define.

// implementation("com.google.mlkit:genai-prompt:1.0.0-beta3")
// ksp("com.google.mlkit:genai-schema-compiler:1.0.0-alpha1")

@Generable("Information extracted from an expense receipt")
data class ParsedReceipt(
  @Guide("Generated title for the expense less than 6 words. Based on restaurant or activity name.")
  val title: String,
  @Guide("Total amount of the expense. Look for values at the bottom and words like total or balance due.")
  val amount: Double,
  @Guide("Type of expense", enumValues = ["travel", "food", "shopping", "entertainment", "other"])
  val category: String,
)

val prompt = "Determine if the image is a receipt or expense. 
    If it is NOT a receipt or expense, output the text 'NOT_A_RECEIPT'.
    Otherwise, parse the receipt information."

val request = generateContentRequest(ImagePart(bitmap), TextPart(prompt)) {}
val requestWithStructuredOutput = generateTypedContentRequest(request, ParsedReceipt::class)

// Define the configuration for Gemini Nano 4 E4B preview model  
// When selecting models, you can specify which performance charactertists are most important
//  for your use case. Use ModelPreference.FULL when you want to prioritize reasoning power over speed. 
//  Use ModelPreference.FAST when complex logic is not required and latency is a priority.
val previewFullConfig = generationConfig {
    modelConfig = modelConfig {
        releaseStage = ModelReleaseStage.PREVIEW
        preference = ModelPreference.FULL
    }
}

val geminiNano4BPreviewModel = Generation.getClient(previewFullConfig)
val response = geminiNano4BPreviewModel.generateContent(requestWithStructuredOutput)
val parsedReceipt: ParsedReceipt? = response.candidates.firstOrNull()?.response

Multimodal input

Lastly, to help users record audio memos during the trip, let’s build a fully on-device voice notes feature. Using ML Kit’s Speech Recognition API, we’ll enable users to record short voice notes that are automatically transcribed to text. With the transcribed text, we’ll use ML Kit’s Prompt API to identify which trip activity is associated with the recorded voice note, letting users easily recap their trip as they scroll through the trip’s itinerary.

The Roman holiday itinerary shows voice note extracts.

The ML Kit GenAI Speech Recognition API allows you to transcribe audio content to text fully on-device using two distinct modes. Basic mode uses a traditional on-device speech recognition model and is available on most Android devices with API level 31 and higher. Advanced mode uses Gemini Nano to offer broader language coverage and better quality, and is currently supported on Pixel 10 devices.

For our feature we combine the Speech Recognition API with the ML Kit GenAI Prompt API:

// implementation("com.google.mlkit:genai-prompt:1.0.0-beta3")
// implementation("com.google.mlkit:genai-speech-recognition:1.0.0-alpha1")

val tripEvents = ... 

// Set up speech recognition
val speechRecognizerOptions =
    speechRecognizerOptions {
        locale = Locale.US
        preferredMode = SpeechRecognizerOptions.Mode.MODE_ADVANCED
    }
val speechRecognizer: SpeechRecognizer = SpeechRecognition.getClient(speechRecognizerOptions)

suspend fun transcribeVoiceNote(recognizer: SpeechRecognizer) {
    // Display partial text as the user is recording audio
    var partialTextResponse = ""

    // Display the full text once user is finished recording audio
    var transcription = ""

    val request: SpeechRecognizerRequest
        = speechRecognizerRequest { audioSource = AudioSource.fromMic() }
    recognizer.startRecognition(request).collect { response ->
        when (response) {
            is SpeechRecognizerResponse.PartialTextResponse -> {
                partialTextResponse = response.text
            }
            is SpeechRecognizerResponse.FinalTextResponse -> {
                transcription = response.text
                processAndCategorizeVoiceNote(transcription, tripEvents)
            }
        }
    }
}

fun processAndCategorizeVoiceNote(transcribedVoiceNote: String, events: List) {
    val prompt = "Given the voice note $transcribedVoiceNote
     and the following events for this trip: $events, rewrite this transcription
     to remove filler words. Then, identify which events from the
     list this rewritten transcription matches to."

     // Utilize ML Kit's Prompt API to process voice note and tag it with the relevant trip activities
     Generation.getClient().generateContent(prompt)
}

Conclusion

Using ML Kit’s GenAI APIs, we were able to take advantage of Gemini Nano to develop fully on-device intelligent features for the JetPacker app, and provide an improved user experience without any additional cloud costs.

Check out the full source code for Jetpacker on Github, and watch the video Build Intelligent Android apps with Google’s AI to learn more about how to integrate intelligent features directly into your app using on-device models, cloud-powered reasoning, and the latest agentic frameworks.

Learn more

Check out the other parts of this blog post series:

Part 1: Introduction of the app and a high-level overview.
Part 2 (this post!): On-device intelligence. Deep-dive into ML Kit’s GenAI APIs and Gemini Nano to build privacy-first features like itinerary summarization, receipt parsing, and local audio processing.
Part 3: Hybrid and cloud reasoning. Explore how to use Firebase AI Logic to ground LLM answers in real-world data like Google Maps and web context.
Part 4: System integration. Integrating with the Android intelligence system using AppFunctions.
Part 5 (coming soon): In-app agentic workflows. Extend the app with an end-to-end booking assistant powered by A2UI and ADK.

Interested in more on Android Development? Follow Android Developers on YouTube or LinkedIn!

All code snippets in this blog post follow the following copyright notice:

Copyright 2026 Google LLC.
SPDX-License-Identifier: Apache-2.0

Upcoming Changes to the Nearby Connections API

2026-07-20T06:00:00.000-07:00

Posted by Wei Wang, Engineering Manager, Android BeTo

User privacy and transparency are core to the Android experience. To better align with these principles, we are updating the default behavior of the Nearby Connections API regarding how it interacts with device radios.

What is changing?

Previously, the Nearby Connections API could automatically toggle Wi-Fi and Bluetooth radios ON to facilitate connections without explicit user intervention. Moving forward, the API will no longer automatically enable these radios for 1P and 3P applications.

What this means for developers

If your app relies on Nearby Connections, you will need to update your implementation to account for these changes:

Manual Radio Management: You must ensure that the necessary radios (Wi-Fi or Bluetooth) are enabled before initiating Nearby Connections tasks.
User Notification: If the required radios are disabled, your app must now inform the user and request that they enable them manually. The API will no longer programmatically turn them on for you.

Timing

These changes are scheduled to take effect in late 2026. We recommend reviewing your connection workflows now to ensure a seamless transition for your users.

Android Studio Quail 2 is Stable: Multi-task with the Android Studio AI agent

2026-07-14T04:00:00.000-07:00

Posted by Amman Asfaw, Product Manager, Android Studio

Android Studio Quail 2 is now stable and ready for you to use in production, bringing a shift to your IDE with concurrent agentic workflows, natively integrated memory leak profiling, and context-aware crash remediation. Whether you are performing a sweeping architectural overhaul, tracing a memory leak, or resolving a critical production crash, Android Studio keeps you anchored in your workspace by reducing manual friction.

Here’s a deep dive into what’s new:

Multi-tasking with parallel chats

In Android Studio Quail 2, we've been hard at work redesigning Agent Mode from the ground up. This new architecture provides better performance, offers more flexibility for decomposing complex tasks, and improves the suite of internal tools the agent uses to do its work.

In addition to these behind-the-scenes improvements, these changes also allow you to converse across multiple agent chats simultaneously. Waiting for the Android Studio agent to finish a task before you can ask another question or initiate a separate task in Agent Mode is a bottleneck of the past. You can multi-task seamlessly: kick off a UI refactor in one tab, fix a ProGuard rule in a second, and generate documentation in a third.

You can also change which models the agent uses from chat to chat based on the requests you have. Take a look at Android Bench for an analysis of how LLMs perform Android development tasks.

How to use: Click the "+" icon to start a new parallel conversation, and use the History icon to navigate between active tasks. Alternatively, select File > New > New Agent Tab to open a conversation in a dedicated tab.
Note: Worktree support is currently unavailable. Exercise caution when running concurrent chats that modify the same project files, which can potentially lead to editor conflicts.

Run multiple agent tasks in parallel with different models of your choice.

Use the History icon to navigate between active tasks.

Memory leak detection with LeakCanary

Memory leaks in Android occur when your code holds onto an object's reference long after its life cycle has ended. This prevents the Garbage Collector from reclaiming that memory, eventually leading to sluggish performance or OutOfMemoryError.

Hunting down memory leaks can be a tedious, manual task. Starting with Android Studio Quail 2, the popular open-source leak detector LeakCanary is natively integrated directly into the Profiler as a dedicated, first-class task.

This integration transforms your debugging performance by lifting and shifting the heap analysis off your resource-constrained testing phone, and onto your powerful development computer. By running the analysis on your computer, leak tracing is up to five times faster and jank-free, leaving your test app running smoothly on the device.

Once a leak is detected during a profiling session:

The Profiler renders an interactive, color-coded leak trace, grouping occurrences and estimating lost memory.
You can click Go to declaration on any leaking object in the trace to instantly jump to that exact line of code in your editor.
You can click Fix with Agent to have the Gemini agent ingest the trace, explain the root cause of the retained reference, and write the exact code change (such as unbinding a listener or clearing a static reference) to plug the leak.

Review memory leaks identified via LeakCanary through the Fix with Agent button.

App Quality Insights agent integration

Tracking down the root cause of an app crash can require manually synthesizing stack traces, device data, and source code. However Android Studio’s App Quality Insights (AQI) is now fully integrated with Agent Mode to do the heavy lifting for you.

When you click on a crash in the AQI panel, you immediately get a concise, high-level summary of the issue. If you need to dig deeper, simply click See more. This opens a dedicated chat where the agent uses your selected model and pulls in local source code and the full stack trace to deliver a comprehensive explanation of the failure.

With the new agent integration, you move directly from issue identification to resolution. By clicking Fix with AI, the agent will analyze the issue, propose a step-by-step fix plan, and—upon your approval—apply the necessary code changes directly to your project and verify the resulting fix

The Fix with AI button triggering the agent to analyze the issue, then propose the fix

Quality & stability improvements

Beyond new features, we’ve continued our focus on quality by addressing numerous bugs and incorporating the latest stability and performance improvements from the IntelliJ platform, making this a significant enhancement for your daily development.

Get Started

Ready to dive in and accelerate your development? Download Android Studio Quail 2 and start exploring these new features today! As always, your feedback is crucial to us. Check known issues, report bugs, and be part of our vibrant community on LinkedIn, Medium, YouTube, or X.

Evolving how LLMs are measured for Android: the next era of Android Bench

2026-07-08T06:00:00.000-07:00

Posted by Zoe Lopez-Latorre, Senior Developer Relations Engineer, Android

Back in March, we introduced Android Bench—our LLM leaderboard for real-world Android development tasks. Our goal was to provide transparency around model capabilities in Android development and to encourage model improvements, to give you more helpful AI options for your everyday workflow. Since then, we have enhanced the benchmark based on your feedback, including evaluating open-weight models and adding cost and efficiency dimensions to the leaderboard.

But AI capabilities are ever-evolving, and measurement needs to follow suit. As part of our July release, we have adopted the Harbor framework, which includes an updated version of the benchmarking agent used to evaluate models.

Along with this change to our evaluation, in this July release we’re adding 8 new models (Claude Fable 5, Claude Sonnet 5, Claude Opus 4.8, GLM 5.2, Kimi K2.7 Code, MiniMax M3, Qwen 3.7 Plus and Qwen 3.7 Max) to the leaderboard. We’re also sharing opportunities for you, the Android developer community, to contribute to the benchmark.

Upgrading our methodology with the Harbor framework

When we designed Android Bench, we anchored our methodology on leading industry standards available at the time. We used mini-swe-agent v1, a general-purpose benchmarking agent, and adapted it to the nuances of Android development to provide a baseline measurement for the capabilities of models for common Android development tasks.

To continue providing you with state-of-the-art evaluations that accurately measure the latest model capabilities on Android development, we are standardizing our benchmark to the Harbor framework. Harbor defines standards and integrations that make it easy for anyone to run the benchmark, evaluate their preferred set-up, or share results – providing you with additional transparency and visibility.

This upgrade enables us to more rigorously evaluate models and their capabilities, and we re-ran the benchmark on all models to establish an updated baseline. This means there is a minor shift in scoring, but you will still be able to view historical scores within the archive on our website.

We want to ensure Android Bench is helpful for you, so we will continuously update it as our evaluations and the industry mature.

Expanding the leaderboard with 8 new models

As part of our commitment to keeping the leaderboard fresh, we have added Claude Fable 5, Claude Sonnet 5, Claude Opus 4.8, GLM 5.2, Kimi K2.7 Code, MiniMax M3, Qwen 3.7 Plus and Qwen 3.7 Max to the Android Bench leaderboard.

You will see that Claude Fable 5 is at the top of the leaderboard with a score of 84.5, followed by GPT 5.5 with 80.2, with Claude Sonnet 5 in 3rd with a score of 76.2.

When just comparing Open-weight models, GLM 5.2 is at the top with 72.2, followed by Kimi K2.7 Code with a score of 70.4.

You can check out model performance and efficiency metrics on the updated leaderboard to see how these new and previous models navigate Android-specific challenges like Jetpack Compose migrations, wearable networking, and platform API updates.

Opening Android Bench to community contributions

From the beginning, we’ve valued an open and transparent approach, which is why we made our original methodology and test harness publicly available on GitHub. You’ve asked for a way to provide feedback on our dataset, so now we’re taking collaboration a step further by giving you, the Android developer community, a chance to shape Android Bench.

Starting today, you can contribute to Android Bench in two ways:

Design and submit your own Android development tasks to evaluate how models handle the scenarios that matter to you.
Run and share benchmark evaluations firsthand, testing your preferred models against our dataset or your own custom tasks.

We will be reviewing the submitted tasks and will be assessing if they get added to the benchmark. We hope to build a benchmark that truly reflects the diverse, day-to-day realities of the global Android developer community.

Looking ahead

With more and more options for agentic development, maintaining a cutting-edge benchmark ensures that the AI assistance you rely on keeps getting smarter, more helpful, and more effective. Head over to our GitHub repository to check out the tasks. We invite you to submit a task to our team for review, and you can check out Harbor Hub to explore the dataset or submit evaluations.

As always, you can find the updated leaderboard, or read the methodology on our website.

Google Play launches the first Indie Games Fund in Africa

2026-07-06T06:00:00.000-07:00

Posted by Steph Pio, Strategic Partnerships Manager, Google Play EMEA

Sub-Saharan Africa is home to some of the world’s most creative storytelling. To help bring those stories to a global audience, today, we’re proud to announce the debut of Google Play’s Indie Games Fund in Africa.

The region’s unique creativity has fueled a vibrant game development scene, helping drive what is quickly becoming one of the most exciting, resilient, and fast-growing gaming markets. It’s a space defined by immense talent. However, access to capital is a persistent hurdle, and a significant investment gap often holds back incredibly promising local studios.

With this inaugural fund, we’re committing $1 million USD to help address that gap. This fund will empower 10 indie game studios across Sub-Saharan Africa to scale their businesses and realize their full potential.

Funding and support for selected studios

This program is designed to drive long-term growth, where it can make the biggest impact. Selected studios will receive a share of the $1 million fund, with individual investments ranging from $50,000 to $200,000 to help elevate their games. Alongside this financial backing, recipients will benefit from dedicated mentorship and hands-on technical support. Together, these awards are designed to help them scale their businesses and reach a global audience.

Who can apply?

The program is open to indie game developers based in Sub-Saharan Africa (see the list of eligible countries) who have launched a game—whether it’s on Google Play, another mobile platform, PC, or console.

Review the eligibility criteria and apply now. Applications close at 12 noon UTC on July 31, 2026.

Eclipsa Video: HDR That Looks Right on Every Screen

2026-06-29T13:00:00.000-07:00

Posted by Tibian Elsheikh, Product Manager, Android Core Graphics and Jeffrey Jose, Product Manager, Android Core Graphics

We’ve all been there: You’re scrolling through your favorite social media feed in a dim room, and suddenly an HDR video pops up. It’s so intensely bright that you have to squint, or maybe you find yourself turning down your screen brightness just to read the caption. Other times, a video that looks vibrant on your phone looks flat, dark, or washed out when you watch it on your living room TV.

While High Dynamic Range (HDR) technology was designed to make videos look richer and more lifelike, the lack of unified industry guidelines means that the exact same clip can render in unexpected and jarring ways depending on the display you’re using.

To solve this, we’re introducing Eclipsa Video—a new standard built to make your favorite videos look consistent, balanced, and comfortable on every screen. Eclipsa Video builds on the open SMPTE ST 2094-50 specification, which Google developed in collaboration with Apple and NBCUniversal.

Sudden brightness spikes during feed scrolling—fixed with Eclipsa Video.

More consistency, comfort, and creative control

Eclipsa Video moves past individual display guesswork. Instead of leaving it up to your device to interpret a video’s brightness on its own, our format carries precise guidelines that tell compatible displays exactly how to render the image.

Designed to scale with your hardware, Eclipsa Video provides three core benefits:

A consistent baseline: Eclipsa Video introduces a shared rulebook for screens. It establishes a consistent benchmark for normal brightness—known as the HDR reference white. This ensures standard text, app interfaces, and standard-range colors remain vibrant and readable without causing uncomfortable screen glare.
Adaptive headroom: Screens have different physical brightness limits, or "headroom." Eclipsa Video guides how displays handle highlights dynamically. Bright details remain brilliant on a premium television, while being scaled intelligently on a mobile screen to prevent sudden blinding transitions.
Preserved creative intent: Rather than applying a single static setting to an entire video, Eclipsa Video carries adaptive, frame-by-frame instructions. Think of it as a set of digital notes from the creator traveling with the video, ensuring the exact colors, contrast, and mood they graded are preserved on your display.

Eclipsa Video preserves true highlight detail on any screen you watch.

Built natively into Android 17

Starting with Android 17, support for Eclipsa Video is built directly into the platform. This means a more comfortable, true-to-life HDR experience is coming natively to the phones, tablets, and TVs you rely on every day. The video you capture carries its creative intent with it, and the video you watch is shown exactly the way it was meant to be seen.

Guidelines for developers & creators

We’re inviting the developer and creator ecosystem to help build a more reliable HDR environment:

Get started with implementation: Learn how to configure playback and capture in your apps with our official guide.
ExoPlayer & Media3 integration: Standard playback handling built directly into Jetpack Media3, allowing ExoPlayer to support Eclipsa Video metadata automatically with no additional player configuration.
Explore open source tools: View and inspect SMPTE ST 2094-50 metadata and dynamic gain curves in real time using HDR Explorer.

What’s next

Eclipsa Video is rolling out now, and you’ll see more apps and devices supporting it over time. Because it’s an open standard, any app developer or hardware manufacturer can integrate it to elevate the viewing experience.

Try out the new tools in Android 17, explore the open-source metadata, and let us know what you think on our developer channels. We can’t wait to see what you create.

Notes & Availability

1. Device Compatibility: Eclipsa Video playback and capture are supported natively on devices running Android 17 (API level 37) and above with HDR displays passing Eclipsa Compliance tests.

2. Developer Resources: The SMPTE ST 2094-50 Specification is openly accessible for technical evaluation.

Expanded billing choice and lower fees on Google Play

2026-06-24T07:00:00.000-07:00

Posted by Paul Feng, Vice President, Google Play Eng, Product, UX

At Google Play, we are committed to delivering the best possible experience to users, while ensuring developers have the tools and adaptability to succeed. Guided by this commitment, earlier this year we announced updates to our business model introducing more billing flexibility, lower fees, and new programs to help your business thrive.

With some of these changes rolling out soon, the breakdown below outlines what is coming, where to find more information, key dates, and how to get started.

More billing flexibility

Google Play’s billing system safely, efficiently, and intuitively handles the complexities of taxes, compliance, and subscriptions across 195+ markets with 300+ local payment methods. However, we understand there are situations where your business needs more flexibility, and that's why we're offering you more options in how you handle digital commerce.

Building from existing programs, the new billing choice program is available to all developers globally who provide digital services or content to users within the United Kingdom and the European Economic Area, alongside programs in the United States. Following this initial phase, we will continue expanding availability to additional markets. You will find the global release schedule at the bottom of this post.

Through these programs, developers can offer an alternative billing system or link users to their own website for purchases, alongside Google Play’s billing. You may also design your own choice screen in accordance with our UX guidelines, as an alternative to Google Play’s default version.

Please find all the details in the program page here.

Lower, separate fees

To enable this new level of flexibility, we're separating our service fee from the billing fee. This starts on June 30, 2026, beginning with the United States, European Economic Area, and United Kingdom.

Regardless of whether you use Google Play's billing system, alternative billing, or external web links, the service fee starts at 10% on your first $1M (USD) in annual earnings. This 10% service fee also applies to all auto-renewing subscriptions. For all other transactions, the rates in the table below applies:

For other transactions, the service fee will be determined by whether the transacting user's install is new or existing relative to the regional rollout date:

New installs: A transaction from a user whose first-time install or first update of the app from Google Play occurred on or after the date that the new fee structure launched in their region.
Existing installs: A transaction from a user whose first-time install or first update of the app from Google Play occurred before the date that the new fee structure launches in their market.

For transactions that use Google Play’s billing system, an additional billing fee applies. In the United States, United Kingdom, and the European Economic Area, the billing fee is set at 5%. We'll announce billing fee details for other markets soon. For transactions processed via alternative billing or external web links, the billing fee does not apply.

Review this Help Center article to understand how these rates apply to your business.

Games Level Up and Apps Experience program guidelines

We are also excited to announce even more opportunities for partners who deliver exceptional user experiences across the Android ecosystem: the revamped Games Level Up and the new Apps Experience program. Detailed guidelines are now available on the respective program websites.

Apps and games that meet all requirements are eligible for a new program rate card with reduced rates. See the table below for details:

Visit the Games Level Up and Apps Experience program websites, review the guidelines, and start preparing your games and apps ahead of September 30, 2026, when the program rate cards officially become available.

Global release schedule

Evolving our business model requires technical infrastructure and alignment with local regulations, so these updates will roll out on a staggered timeline. To help you plan, here is the previously announced release schedule for each update across all markets:

Here is a quick recap of the resources available to help you get started:

Review the billing choice program;
Learn more about Google Play's lower service fees;
Explore detailed guidelines on the Games Level Up and Apps Experience program websites.

We look forward to building the next generation of Google Play experiences together.

Android developer verification: Building a safer ecosystem together

2026-06-18T07:00:00.000-07:00

Posted by Matthew Forsythe, Director Product Management, Android App Safety

July 15, 2026: Updated Play Console requirements for Play developers

To meet Android developer verification and updated Play Console Requirements, Play developers must register their Play apps in Play Console. While 99% of apps on Play have been registered automatically, you should check your Play Console Home page to register any remaining apps by September 30, 2026 to avoid global removal from Google Play and ensure a seamless user installation experience.

You can also use Play Console to register apps you distribute outside of Google Play to ensure they can be installed on certified Android devices.

Last year, we introduced Android developer verification to strengthen ecosystem security and stop malicious actors from hiding behind anonymity to release harmful apps. Millions of apps have been registered since the verification launched in March, covering nearly all installs on Google Play and a large majority of installs from outside of Google Play. We appreciate the feedback and partnership from industry leaders, developers, and Android communities that helped us design this experience and drive strong adoption.

Initial launch across seven stores and four countries

These new developer verification protections will take effect on September 30, 2026, starting with users in Brazil, Indonesia, Singapore, and Thailand.

This rollout is an industry-wide effort to create a safer ecosystem. We will begin by verifying app installations from the following stores:

Google (Google Play)
Honor (HONOR App Market)
OPlus (OPPO App Market)
Samsung (Galaxy Store)
Transsion (Palm Store)
vivo (V-Appstore)
Xiaomi (GetApps)

Following this initial phase with our partners, we will expand these protections globally for all apps on certified Android devices in 2027.

Automate your workflow with new APIs

To further streamline app registration, we are launching a suite of developer-requested APIs to help you register apps in bulk or directly through your continuous integration and deployment (CI/CD) pipelines. The Android Developer ID Status API will let you check if a package name has already been registered, and the Android Developer Console API will let you register and manage package names directly within your development environment. Both APIs also support OAuth delegation, allowing third-party platforms, like Android app stores, to perform these operations natively on your behalf.

We'll launch these APIs over the next few months.

What’s next

June 2026: Starting this month, we are rolling out a new system service that will be automatically installed on most Android devices. This service will be used later this year to verify developer registration.
July 2026: We’ll launch the Android Developer ID Status API globally and begin early access for the Android Developer Console API. Early access also starts for limited distribution accounts on Android Developer Console. This new type of Android developer account is designed for students, hobbyists, and learners and lets you share your apps to up to 20 devices without a government-issued ID or a fee.
August 2026: Limited distribution accounts and the new Android Developer Console API will launch globally. We’ll also launch an advanced flow for installing apps from unverified developers, which includes security checkpoints to resist coercion scams, while allowing power users to maintain the ability to sideload apps from unverified developers.
September 30, 2026: App registration becomes required for participating stores in Brazil, Indonesia, Singapore, and Thailand. Unregistered apps can be sideloaded with Android Debug Bridge (adb) or advanced flow.
2027 and beyond: After incorporating the feedback from our partners, users, and developer community, we’ll expand the Android verification requirement globally.

Get started with Android developer verification

If you distribute apps in Brazil, Indonesia, Singapore, or Thailand via the stores listed above, please ensure your verification is complete by the September deadline.

Google Play developers: Most Play developers are already verified, and over 99% of their apps have been registered. Go to your Play Console Home page to see your app’s verification status, and register apps you want to continue distributing that weren't automatically registered.
Developers who distribute only outside of Google Play: Sign up for the Android Developer Console today to register your apps.

Students and hobbyists: Sign up here for early access to limited distribution accounts to help us refine the feature with your feedback.

Thank you for helping us build a safer Android ecosystem. Stay tuned for more updates as we approach September and the 2027 global rollout.

Building a Mixed-Reality Tour Guide with Android XR, the Geospatial API, and Gemini

2026-06-17T10:00:00.000-07:00

Posted by Coco Fatus, UX Designer, Alon Hetzroni, UX Engineer, Azin Mehrnoosh, Product Manager Android XR

At this year's Google I/O, we announced an update for spatial experiences: the Geospatial API is now available as a preview in ARCore for Jetpack XR. By bringing Google's Visual Positioning System (VPS) to Android XR, Android XR enables anchoring digital content to the physical world with sub-meter accuracy and precise orientation in supported areas.* To explore what the Geospatial API could unlock, our team built a demo: the XR Geospatial Tour.

Imagine walking into a new city, putting on a pair of wired XR glasses (like the upcoming XREAL Project Aura), and instantly having a knowledgeable, local guide showing you around. You don't need to stare down at a 2D map—instead, 3D models gently guide your path, and an intelligent voice tells you about the historical landmarks right in front of you. We combined the Geospatial APIs, Gemini API using Firebase AI Logic, Google Maps Grounding, and Jetpack XR SDK to create a hands-free, immersive walking tour experience.

*Disclaimer: Video and Tour Guide application are for demonstration purposes only. Some sequences have been shortened. Any hardware depicted may be under development; final product details may differ.

Let’s walk through the implementation details and show how we tied these APIs together to build a world-scale spatial experience.

1. Pinpointing the User with ARCore Geospatial API (VPS)

Enhance your navigation experience on XR by combining the power of GPS with the precision of VPS. The accuracy and precise orientation that comes with VPS allows 3D waypoints to align with the physical world.

This is why the Geospatial API on Android XR can help you build custom experiences. By using advanced computer vision, VPS tries to provide a GeospatialPose (including latitude, longitude, and heading) that is more accurate than GPS.

Here's how we retrieve the user's Geospatial pose by mapping the device's orientation to a Geospatial coordinate:

// Retrieve the current geospatial pose from the ARCore session
val result = geospatial.createGeospatialPoseFromPose(arDevice.state.value.devicePose)
if (result is CreateGeospatialPoseFromPoseSuccess) {
    val pose = result.pose
    Log.d("VPS", "Accurate Location: ${pose.latitude}, ${pose.longitude}")
}

Because the entire experience relies on this accuracy, we monitor the horizontalAccuracy and orientationYawAccuracy until they meet our thresholds. If the user is indoors or in an unrecognized area, we prompt them to "walk to an outdoor public space and look around".

2. Crafting the Itinerary with Gemini API & Google Maps Grounding

Once we have a location, we use the Gemini API using Firebase AI Logic to prompt the Gemini model to act as a local tour guide. We pass the user's coordinates to the model and ask it to output a structured JSON response containing nearby walking tours:

   val configForTools = ToolConfig(
      functionCallingConfig = null,
      retrievalConfig = retrievalConfig {
        latLng = FirebaseLatLng(pose.latitude, pose.longitude)
        languageCode = "en"
      }
    )
    val responseJsonSchema = Schema.obj(
      mapOf(
        "locationIntro" to Schema.string(),
        "tours" to Schema.array(
          Schema.obj(
            mapOf(
              "title" to Schema.string(),
              "description" to Schema.string(),
              "stops" to Schema.array(
                Schema.obj(
                  mapOf(
                    "name" to Schema.string(),
                    "detailedName" to Schema.string(),
                    "description" to Schema.string()
                  )
                )
              )
            )
          )
        )
      )
    )
    val model = Firebase.ai(backend = GenerativeBackend.googleAI()).generativeModel(
      modelName = "gemini-3.5-flash",
      tools = listOf(Tool.googleMaps()),
      generationConfig = generationConfig {
        responseMimeType = "application/json"
        responseSchema = responseJsonSchema
      }
    )
   val result = model.generateContent("The user is at latitude ${pose.latitude} and longitude ${pose.longitude}. Generate exactly 3 diverse tours near this location (e.g., historical, food, nature). All tour ideas should be walking distance only.")

Large Language Models are great at generating rich descriptions, but they can sometimes hallucinate exact latitude/longitude coordinates. To solve this, we used Google Maps Grounding to ground the AI.

3. A Voice to Guide You: Gemini 2.5 TTS

To make the tour guide feel truly present, we implemented dynamic voiceovers.

Using the gemini-2.5-flash-tts model, we can configure our model generation config to natively return audio data instead of just text! Here’s how you can request the ResponseModality.AUDIO:

val ttsModel = Firebase.ai(backend = GenerativeBackend.googleAI())
    .generativeModel(
        modelName = "gemini-2.5-flash-tts",
        generationConfig = generationConfig {
            // Instruct the model to return Audio
            responseModalities = listOf(ResponseModality.AUDIO)
        }
    )
val response = ttsModel.generateContent("Say in a neutral but positive voice:\n$prompt")
// Extract the raw audio bytes from the response
val audioBytes = response.candidates.firstOrNull()?.content?.parts
    ?.filterIsInstance<InlineDataPart>()
    ?.firstOrNull { it.mimeType.contains("audio") }?.inlineData

4. Bringing it to Life in 3D with Jetpack XR

The final piece of the puzzle is rendering this data in the user's field of view. The Jetpack XR SDK makes it intuitive to transition from a 2D Android UI to spatial computing.

We used Jetpack Compose for XR to build spatial components. To represent points of interest along the tour, we built a Composable called InfoSphere, which contains a GltfModel of a 3D orb that floats in space and can be interacted with to reveal information.

Using Jetpack XR SDK, we can place 3D models alongside the Compose UI using SpatialBox and SceneCoreEntity. We also used InteractableComponent to respond to user taps.

@Composable
fun InfoSphere(
    content: InfoBubbleContent,
    session: Session,
    sphereModel: GltfModel,
    isSelected: Boolean,
    onClick: () -> Unit
) {
    // SpatialBox lets us arrange 3D components and SpatialPanels together
    SpatialBox(
        SubspaceModifier
            .offset(x = 2.dp, y = 1.dp, z = (-3).dp) // Positioned in 3D space
    ) {
        // Smoothly animate the visibility of our 2D Compose UI Panel
        AnimatedSpatialVisibility(visible = isSelected) {
            SpatialPanel {
                InfoBubble(content) // Regular 2D Compose UI
            }
        }
        // Render our interactive 3D sphere
        SceneCoreEntity(
            factory = {
                GltfModelEntity.create(session, sphereModel).also { entity ->
                    // Make the 3D model respond to user taps
                    entity.addComponent(InteractableComponent.create(session) { inputEvent ->
                        if (inputEvent.action == InputEvent.Action.UP) {
                            onClick()
                        }
                    })
                }
            }
        )
    }
}

By combining AnimatedSpatialVisibility for traditional Compose UI surfaces with SceneCoreEntity 3D elements, we're able to seamlessly blend data into the physical world.

Explore what’s possible with Android XR today

Building the XR Geospatial Tour app showed us that the barrier to entry for world-scale spatial experiences is lower than ever for Android developers. With the Geospatial API now available in preview on Android XR, your apps can seamlessly understand the physical world around them. By combining Compose for XR’s APIs with the high-precision location data of VPS and the generative capabilities of Gemini, we can create experiences that understand both where the user is and what they are looking at.

To help you get hands-on with Android XR, we are thrilled to open applications for the Android XR Developer Catalyst Program, which includes XREAL Project Aura. Starting today, you can apply to get access to an XREAL Project Aura devkit or our display glasses devkit over the coming months!

Android 17 is here

2026-06-16T06:00:00.000-07:00

Posted by Matthew McCullough, VP of Product Management, Android Developer

Today we're releasing Android 17 and making it available on most supported Pixel devices. Look for new devices running Android 17 in the coming months.

Android 17 marks the start of our transition to an intelligence system, putting your apps at the center. It's shifting to an adaptive-first development standard by introducing mandatory large-screen resizability, all while delivering next-generation privacy, security, media, camera, and performance. We'll cover all that in this post, as well as how we're bringing together next generation tools, libraries, and agent skills to help your apps embrace the opportunity.

Throughout the past year, from our Canary channel to our Beta releases, we’ve collaborated with you in the developer community to build a platform you and your users can trust. To that end, this moment marks the availability of the source code at the Android Open Source Project (AOSP). This allows you to examine the source code for a deeper understanding of how Android works.

Let's dive deeper into Android 17.

An intelligence system

With deep integration between hardware, software and AI, we’re transforming Android from an operating system to an intelligence system. It's about delivering new helpful experiences that anticipate user needs, and it brings more opportunities for engagement with your apps. To that end, Android 17 expands the capabilities of AppFunctions, a platform API with a corresponding Jetpack library. It allows you to contribute your app's unique capabilities as orchestratable "tools" for Android MCP, the on-device equivalent of the Model Context Protocol. AI agents and assistants (like Google Gemini) can discover and execute AppFunctions to perform workflows on behalf of the user with direct access to the app's local state.

The Jetpack library, currently in alpha, makes adding AppFunctions as easy as annotating a class and adding KDoc comments.

/**
 * A note app's [AppFunction]s.
 */
class NoteFunctions(
    private val noteRepository: NoteRepository
) {
    /**
     * Adds a new note to the app.
     *
     * @param appFunctionContext The execution context.
     * @param title The title of the note.
     * @param content The note's content.
     */
    @AppFunction(isDescribedByKDoc = true)
    suspend fun createNote(
        appFunctionContext: AppFunctionContext,
        title: String,
        content: String
    ): Note {
        return noteRepository.createNote(title, content)
    }
}

We’ve also launched an AppFunctions agent skill that analyzes your app’s key workflows, automatically generates the required Kotlin code, optimizes your KDocs for LLM tool-calling, and provides ADB commands for testing and debugging.

The Gemini integration is currently in a private preview with trusted testers, but you can begin preparing your apps now. In addition to ADB commands to execute your AppFunctions, we've provided a test agent app that includes an interface to discover and execute your app functions and simulate an AI agent integration. Join our integration early access program at goo.gle/eap-af for a chance to be among the first apps to deploy AppFunctions to production.

Adaptive-first

Your users no longer rely on a single form factor; they transition between phones, foldables, tablets, laptops, automotive displays, and immersive XR environments. Now, with over 580 million large screen devices in the hands of users and the forthcoming launch of Googlebooks, the next generation of ChromeOS built on the Android stack, adaptive is no longer just a technical goal. It’s a massive opportunity to reach highly engaged users, which is one of the reasons we're shifting to an adaptive-first development standard.

No resizability/orientation restrictions on large screens

To ensure apps deliver a premium experience across all form factors, including mobile devices running in desktop mode on connected displays, Android 17 (API level 37) removes the developer opt-out for orientation and resizability restrictions on large screen devices (sw > 600 dp) for apps targeting API level 37. The system will ignore legacy manifest attributes and runtime APIs, including screenOrientation, setRequestedOrientation(), resizeableActivity=false, and aspect ratio constraints (minAspectRatio/maxAspectRatio). Games (based on app category in Google Play) remain exempt. Your app must be ready to adapt to any window size, respect the user's preferred device posture, and support free-form windowing natively.

Next-gen multitasking: App Bubbles, Bubble Bar, and desktop interactive PiP

Android 17 introduces powerful new windowing capabilities that redefine how users multitask, demanding even greater layout flexibility from your apps:

App Bubbles: Moving beyond the messaging bubbles API, users can now transform any app into a floating bubble by long-pressing its icon on the launcher. This feature is available across phones, foldables, and tablets, enabling lightweight multitasking for any workflow.
The Bubble Bar: On large screens (tablets and foldables), the system taskbar now includes a dedicated Bubble Bar to organize, transition between, and dock these floating app bubbles.
Desktop interactive PiP: In desktop environments, Android 17 introduces interactive Picture-in-Picture (PiP). Unlike traditional PiP windows which are read-only, these pinned windows remain fully interactive while staying always-on-top of other application windows.

App Bubbles and Bubble Bar in action

Activity recreation updates

To prevent disruptive state loss and stutter, Android 17 updates the default behavior for Activity recreation. The system will no longer restart activities by default for typical configuration changes that do not require a full UI redraw (including CONFIG_KEYBOARD, CONFIG_KEYBOARD_HIDDEN, CONFIG_NAVIGATION, CONFIG_TOUCHSCREEN, and CONFIG_COLOR_MODE).
Instead, running activities will receive these updates via onConfigurationChanged(), enabling smooth transitions. If your application explicitly relies on a full restart to reload resources for these changes, you must now explicitly opt-in using the new android:recreateOnConfigChanges manifest attribute.

Continue On

Android 17 adds Continue On to help users seamlessly transition a task between Android devices. The user sees a suggestion for the most recently opened app from their mobile device in their tablet taskbar, providing a one-tap affordance to launch the app and deep-link where they left off. Continue on can support app-to-web transitions, including falling back to using the web if the app isn't installed.

Handoff Suggestion on a Tablet

class MyHandoffActivity : Activity() {

    ...

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    // Do stuff
    ...
    // Enable handoff
    setHandoffEnabled(true, null)
  }

  // Override and implement onHandoffActivityDataRequested
  override fun onHandoffActivityDataRequested(handoffRequestInfo: HandoffActivityDataRequestInfo) : HandoffActivityData {
    // Create and return handoff data
  }
}

Go adaptive-first with Jetpack Compose

To help you adapt your apps to meet the new Android 17 requirements, we've launched the Jetpack Compose adaptive skill. This AI-powered developer workflow helps you implement the best adaptive practices:

Adaptive navigation: Automatically transition between bottom navigation bars on mobile and edge-anchored navigation rails on large screens using NavigationSuiteScaffold from the Material 3 Adaptive library.
Multi-pane layouts: Implement list-detail and supporting pane layouts natively using Navigation 3 Scenes (ListDetailSceneStrategy and SupportingPaneSceneStrategy) instead of fragile fragment transactions.
FlexBox & Grid APIs: Utilize Compose 1.11's dynamic layout components to easily adjust row and column spans on the fly, ensuring your content always fills the space beautifully.
Advanced non-touch input: Leverage Compose 1.11's enhanced trackpad and mouse support, including native focus rings and new APIs (like TrackpadInjectionScope and performTrackpadInput) to easily test and deliver a true "laptop-class" experience on Googlebooks and Desktop Mode.
Dynamic window states: Leverage Compose's reactive state model to seamlessly adapt your UI when the app transitions from full screen to a floating App Bubble or an interactive Desktop PiP window, ensuring a premium experience even at minimal dimensions.

Android is Compose-first

Compose offers the easiest way to build adaptive apps, and that's just one of the many reasons we believe that all Android UI should be built with Compose. To that end, Android development is now Compose-first. All new Android APIs, libraries, tools, and developer guidance will be built exclusively for Jetpack Compose. Legacy View components (in the android.widget package) and View-based Jetpack libraries (like Fragments, RecyclerView, and ViewPager) are now in maintenance mode. They will receive only critical bug fixes, and no new features.

TIP
Ready to migrate? Use our AI-driven XML to Compose Migration Skill to automatically analyze your legacy View layouts and convert them into highly-adaptive Compose code.

Performance & efficiency

App performance means a smooth user interface, fast app start times, and efficient multitasking; Android 17 has impactful improvements in all of these areas.

App memory limits

Memory usage is one of the silent foundations of overall performance. When a foreground app or service grows unchecked, memory management spikes CPU and battery utilization and eventually leads to the termination of other well-behaved cached apps and background jobs, ultimately forcing slower cold starts and impaired multitasking.

Starting in Android 17, the system will enforce strict app memory limits based on a device's total RAM, abruptly terminating offending processes. New things to help you navigate these tighter requirements:

R8 Optimizer: The R8 optimizer significantly reduces your app's bytecode memory footprint by shrinking classes, methods, and fields into shorter names, and stripping out unused code and resources. Use R8 in full mode along with the new R8 configuration analyzer to make sure your app is getting the most from R8.

The R8 Configuration Analyzer

LeakCanary in Android Studio Panda: The profiler now features native LeakCanary integration as a dedicated task, fully integrated with your IDE and source code.
ApplicationExitInfo: If your app is terminated by these limits, getDescription() from ApplicationExitInfo will return "MemoryLimiter:AnonSwap".
On-Device Anomaly Detection: Part of ProfilingManager, you can leverage trigger-based profiling using TRIGGER_TYPE_ANOMALY to automatically capture heap dumps when the memory limit is reached.

val profilingManager = applicationContext
   .getSystemService(ProfilingManager::class.java)

val triggers = ArrayList<ProfilingTrigger>().apply {
  add(ProfilingTrigger.Builder(
    ProfilingTrigger.TRIGGER_TYPE_ANOMALY).build())
}
profilingManager.addProfilingTriggers(triggers)

And, we're working to surface more in-field memory metrics to you within Google Play Console.

Generational garbage collection

Android 17 introduces more frequent, less resource-intensive young-generation collections to ART's Concurrent Mark-Compact garbage collector (GC). By separating short-lived objects from stable, long-lived ones, the system runs frequent, lightweight "young-generation" sweeps rather than expensive full-heap scans, drastically reducing CPU usage, power drain, and UI stutter. Our testing has shown significant improvements in GC interference with application threads and a reduction in the maximum memory resident set size (RSS). ART improvements are also available to over a billion devices running Android 12 (API level 31) and higher through Google Play System updates.

Lock-Free MessageQueue

For apps targeting SDK 37 or higher, the core android.os.MessageQueue now implements a lock-free architecture, significantly reducing missed frames, improving app startup time, and radically improving the performance of busy queues in multithreaded scenarios. Note: This can break apps that use reflection on private MessageQueue fields and methods. The peekWhen and poll APIs have been added to TestLooperManager for instrumentation testing without relying on MessageQueue internals.

Static final fields now truly final

Starting from Android 17, apps targeting SDK 37 or higher won’t be able to modify “static final” fields, allowing the runtime to apply performance optimizations more aggressively. An attempt to do so via reflection (or deep reflection) will lead to an IllegalAccessException being thrown. Modifying them via JNI’s SetStatic<Type>Field methods family will immediately crash the application.

Custom notification view restrictions

To reduce memory usage we are further restricting the size of custom notification views. This update closes a loophole that allows apps to bypass existing limits using URIs. This behavior is gated by the target SDK version and takes effect for apps targeting API 37 and higher.

Privacy & Security

Maintaining user trust is at the heart of the Android ecosystem. Android 17 introduces robust features that protect sensitive data while simplifying user experiences.

Privacy-preserving choices

Historically, apps required broad, permanent permissions to access information like contacts, precise location and media files. Android 17 continues the shift toward privacy-preserving choices that grant temporary, session-based access only to the data the user explicitly selects:

System-Level Contact Picker: Utilizing ACTION_PICK_CONTACTS, apps can request temporary access only to specific fields (e.g., email or phone number) chosen by the user, eliminating the need for the broad READ_CONTACTS permission. It also fully supports work/personal profile separation.
Customizable Photo Picker aspect ratio: UsingPhotoPickerUiCustomizationParams, you can customize the system photo picker to show thumbnails in portrait mode. This is perfect for apps that always display photos and videos in portrait such as video based social media apps.
System-rendered Location Button: A new system-rendered location button that you can embed in your app grants precise location access for the current session only.
EyeDropper API: A new system-level API, ACTION_OPEN_EYE_DROPPER, allows your app to create a system-powered eyedropper enabling the user to select color from any pixel on the display. This provides a secure, privacy-preserving color-picking experience that eliminates the need for broad, sensitive screen capture or media projection permissions.

val eyeDropperLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
   if (result.resultCode == Activity.RESULT_OK) {
       val color = result.data?.getIntExtra(Intent.EXTRA_COLOR, Color.BLACK)
       // Use the picked color in your app
   }
}
fun launchColorPicker() {
   val intent = Intent(Intent.ACTION_OPEN_EYE_DROPPER)
   eyeDropperLauncher.launch(intent)
}

Picking a color from anywhere on the screen with the system EyeDropper

Local network access

Apps targeting Android 17 now either require the ACCESS_LOCAL_NETWORK runtime permission or the use of system-mediated, privacy-preserving device pickers for local network communication, such as talking to smart home devices or casting receivers. Because ACCESS_LOCAL_NETWORK falls under the existing NEARBY_DEVICES permission group, users who have already granted other NEARBY_DEVICES permissions will not be prompted again.

SMS OTP protection

Android 17 expands SMS one-time-password (OTP) protection by delaying access to SMS messages for three hours:

WebOTP Format: Delayed for all apps that are not the intended recipient (domain mismatch).
Standard SMS OTP: Delayed for all apps targeting SDK 37+.
Exemptions: Default SMS, assistant, and connected companion apps are exempt. Apps are strongly encouraged to migrate to the SMS Retriever or SMS User Consent APIs.

Post-Quantum Cryptography (PQC)

Android 17 is ready for the next generation of cryptographic security:

Keystore Integration: Supported devices can generate ML-DSA (Module-Lattice-Based Digital Signature Algorithm) keys in secure hardware to produce quantum-safe signatures, exposed via standard JCA APIs.
Hybrid APK Signing: Introducing the v3.2 APK Signature Scheme, which combines classical signatures with ML-DSA signatures to secure app delivery.

Safer native dynamic code loading

If your app targets SDK 37 or higher, the Safer Dynamic Code Loading (DCL) protection introduced in Android 14 for DEX and JAR files now extends to native libraries. All native files loaded using System.load must be marked as read-only. Otherwise, the system throws UnsatisfiedLinkError

Smarter password protection for physical inputs

With Android 17, we're making it safer to enter passwords, PINs, and other secrets when using a physical keyboard by no longer showing the last typed character by default.

Users can still easily customize these display settings to match their preferences (availability may vary by device manufacturer).

These enhanced privacy protections are automatically supported byAndroid's built-in SDK components and will be supported in Compose 1.12 for SecureTextFields.

Smarter password protection for physical inputs

Media and camera features that empower creators and delight users

Android 17 introduces new creator features that give access to pro-quality cameras and media, all while improving the experience for consumers.

Eclipsa Video: HDR video standard built upon the SMPTE ST 2094-50 specification that introduces new metadata to help devices adapt content for their display headroom and ambient light conditions, as well as improve the simultaneous display of standard and HDR content.
RAW14 image format: New support for the RAW14 image format provides a way for your professional camera app to capture the highest level of detail and color depth from compatible camera sensors.
Vendor-defined camera extensions: Vendor-defined extensions enable hardware partners to define and implement custom camera extension modes, providing access to the best and latest camera features.
Extended HE-AAC software encoder: A new system-provided Extended HE-AAC software encoder, supports both low and high bitrates using unified speech and audio coding, providing significantly better audio quality for voice messages in low-bandwidth conditions, including support for loudness metadata.
Versatile Video Coding (H.266): Enables OEMs to add codec support by defining the video/vvc MIME type in MediaFormat, adding new VVC profiles in MediaCodecInfo, and integrating support into MediaExtractor.
Camera device type: New APIs that query the underlying device type to identify if a camera is built-in hardware, an external USB webcam, or a virtual camera.
Constant Quality for Video Recording: SetVideoEncodingQuality in MediaRecorder configures a constant quality (CQ) mode for video encoders to ensure uniform visual fidelity across the entire video.

Better support for hearing aids

Bluetooth LE Audio hearing aid support: Android now includes a specific device category for Bluetooth Low Energy (BLE) Audio hearing aids with the new AudioDeviceInfo.TYPE_BLE_HEARING_AID constant, so your app can distinguish hearing aids from regular headsets to provide a tailored experience for users with assistive listening devices.
Granular audio routing for hearing aids: Android 17 allows users to independently manage where specific system sounds are played. They can choose to route notifications, ringtones, and alarms to connected hearing aids or the device's built-in speaker, helping to avoid unwanted in-ear interruptions while maintaining a Bluetooth connection for hearing aid management apps.

CameraX and Media3

CameraX and Media3 have been updated for Android 17. They are there to do the heavy lifting, smoothing the rough edges of media development and simplifying building reliable camera capture, smooth media playback, and creative and complex editing experiences.

We've released an agent skill that can migrate legacy Android camera implementations (Camera1 or raw Camera2 APIs) to CameraX.

Note: You'll need to update your CameraX version to either 1.5.2 or 1.6.0+ to avoid a crash related to an added dynamic range mode on Android 17 devices.

Get your apps, libraries, tools, and game engines ready!

If you develop an Android SDK, library, tool, or game engine, it's critical to prepare any necessary updates now to prevent your downstream app and game developers from being blocked by compatibility issues and allow them to target the latest SDK features. Please let your downstream developers know if updates are needed to fully support Android 17.

Testing involves installing your production app or a test app making use of your library or engine using Google Play or other means onto a device or emulator running Android 17 Beta 4. Work through all your app's flows and look for functional or UI issues. Each release of Android contains platform changes that improve privacy, security, and overall user experience; review the app impacting behavior changes for apps running on and targeting Android 17 to focus your testing, including the following:

Resizability on large screens: Once you target Android 17 (SDK 37), you can no longer opt out of maintaining orientation, resizability and aspect ratio constraints on large screens.
Dynamic code loading: If your app targets SDK 37 or higher, the Safer Dynamic Code Loading (DCL) protection introduced in Android 14 for DEX and JAR files now extends to native libraries. All native files loaded using System.load() must be marked as read-only. Otherwise, the system throws UnsatisfiedLinkError.
Enable CT by default: Certificate transparency (CT) is enabled by default. (On Android 16, CT is available but apps had to opt in.)
Local network protections: Apps targeting SDK 37 or higher have local network access blocked by default. Switch to using privacy preserving pickers if possible, and use the new ACCESS_LOCAL_NETWORKpermission for broad, persistent access.

Background audio hardening: Starting in Android 17, the audio framework enforces restrictions on background audio interactions including audio playback, audio focus requests, and volume change APIs. Based on your feedback, we’ve made some changes since beta 2, including targetSDK gating while-in-use FGS enforcement and exempting alarm audio. Full details available in the updated guidance.
NPU access declaration: Apps targeting Android 17 that need to directly access the NPU must declare FEATURE_NEURAL_PROCESSING_UNIT in their manifest to avoid being blocked from accessing the NPU. This includes apps that use the LiteRT NPU delegate, vendor-specific SDKs, as well as the deprecated NNAPI.

Get started with Android 17

Your Pixel device should get Android 17 shortly if you haven't already been on the Android Beta. If you don’t have a Pixel device, you can use the 64-bit system images with the Android Emulator in Android Studio. If you are currently on Android 17 Beta 4.1 and have not yet taken an Android 17 QPR1 beta, you can opt out of the program and you will then be offered the release version of Android 17 over the air.

Getting the Android 17 beta on partner devices

Android 17 is available in beta on handset, tablet, and foldable form factors from partners including Honor, iQOO, Lenovo, OnePlus, OPPO, Realme, Sharp, vivo, and Xiaomi.

For the best development experience with Android 17, we recommend that you use the latest Canary build of Android Studio Quail. Once you’re set up, here are some of the things you should do:

Test your current app for compatibility, learn whether your app is affected by changes in Android 17, and install your app onto a device or Android Emulator running Android 17 and extensively test it.

Thank you again to everyone who participated in our Android developer preview and beta program. We're looking forward to seeing how your apps take advantage of the updates in Android 17, and have plans to bring you updates in a fast-paced release cadence going forward.

For complete information on Android 17 please visit the Android 17 developer site.

What’s New in Android XR: Tooling, Engine Support, and Ecosystem Updates

2026-06-15T06:00:00.000-07:00

Posted by Stevan Silva, Group Product Manager, and Vinny DaSilva, Developer Relations Engineer, Android XR

From augmented overlays to fully immersive environments, the Android XR ecosystem is expanding rapidly, with the Samsung Galaxy XR already available today. Alongside the latest updates from Google I/O and this week's Augmented World Expo (AWE), we are rolling out new tooling, broader engine support, and ecosystem resources to help you build and scale experiences for Android XR.

To get a quick look at what’s new, check out our video recap!

Ready to dive deeper? Let’s jump into the major updates that will streamline your XR development workflow.

Build, Prototype, and Iterate with Developer Preview 4

Developer Preview 4 of the Android XR SDK delivers the APIs and tools you need to design and build right from your laptop. This update includes the specific libraries required to target both immersive and augmented experiences. Check out the video below for a comprehensive breakdown of the latest in Android XR:

To test all of these interactions without needing physical hardware, you can emulate and iterate on your code entirely within Android Studio. Check out our tooling deep dive to see how you can use XR emulator today:

Extending your mobile apps for intelligent eyewear

Building for audio and display glasses doesn't mean starting from scratch. With the Jetpack Projected library, you can take your existing mobile app to create a complementary augmented experience. The new release includes a Device Availability API that hooks into standard Android Lifecycle states, allowing your app to natively adapt its behavior based on whether the glasses are being worn.

To accelerate your development journey, use Android CLI and the display glasses skill to extend your mobile app into an augmented experience. The skill is packed with specialized knowledge of Jetpack Compose Glimmer, enabling it to build your UI using our recommended design patterns.

We’ve also updated Jetpack Compose Glimmer to optimize text legibility on optical see-through displays and provide touchpad-optimized navigation components.

See how it looks in action: Developers at NAVER Papago are already exploring how to seamlessly bring their mobile experience directly to display glasses.

To learn how to leverage these tools, watch this session on extending mobile apps for AI glasses:

Building global, location-based immersive experiences

For developers focused on immersive experiences, Developer Preview 4 brings modern, Kotlin-first architectural upgrades across our core perception libraries. We have also introduced an early preview of the Geospatial API for wired XR glasses. By combining ARCore for Jetpack XR with Google's Visual Positioning System (VPS), you can anchor digital content to high-precision real-world locations.

Leverage the Platforms You Know with Expanded Engine Support

We want you to build using the ecosystems and workflows you already know best. To make it easier to bring your existing XR experiences over to Android XR, we are thrilled to introduce official support for Unreal Engine and Godot alongside our existing Unity's support for wired XR glasses.

With this expansion, we are introducing the Android XR Engine Hub, a desktop tool for Windows that shortens iteration cycles by bringing real-time testing directly into your engines viewport. Catch the full breakdown of our engine updates here:

Apply Today for the Android XR Developer Catalyst Program

In addition to providing the platform, we want to fuel your innovation directly through ecosystem resources. The Android XR Developer Catalyst Program is designed to support developers with access to pre-release hardware, including display glasses, and wired XR glasses.

Accepted developers will receive resources, support forums, and launch guidance to prepare their apps for Google Play. Applications are open right now, so don't wait to submit your project ideas.

Start Building!

The ecosystem is growing rapidly, and the tools are ready for you to explore. Samsung Galaxy XR is available now, and you can dive in today with Developer Preview 4 of the Android XR SDK. If you don’t have hardware yet, check out the tools and to get started with the XR Emulator in Android Studio.

For a complete look at all of our technical sessions, browse the full Android XR Playlist on YouTube to see what else is possible. We can’t wait to see what you build!

Top 3 updates for Android developer productivity

2026-06-09T06:00:00.000-07:00

Posted by Simona Milanovic, Developer Relations Engineer

Every year, Google I/O brings new announcements and resources across ecosystems and products, including Android development. As development shifts toward AI and agent-assisted tooling, we’ve expanded our offerings to better support you, however you decide to build for Android.

To help you stay up to date, here is a summary of the top 3 announcements for Android Developer Productivity at I/O.

1. Android CLI is now stable

Android CLI is now stable at version 1.0, with more capabilities and integrations.

The latest version of Android CLI introduces many new features, like programmatic version lookup and support for Journeys, and bridging capability to allow agents to integrate directly with Android Studio, via the studio command.

Running Android Studio alongside the agent and Android CLI enables more efficient navigation in your project, more precise output, and access to Android Studio’s unique tooling, such as performance profilers, Compose Previews, and Android Device Streaming.

Android CLI now integrates seamlessly with Android Studio

Additionally, Google Antigravity now officially supports Android development, with the Android resources bundle, which includes the Android CLI and skills.

You can either install the bundle during onboarding after installation, or later from the Settings > Customizations > Build With Google Plugins menu. This provides Antigravity with all the powerful tools and knowledge of Android CLI to enable it to perform core tasks—from creating projects to deploying your app on a new virtual device—much more easily and efficiently.

Google Antigravity now offers the Android resources bundle

Android CLI is now available through more package managers: like npm and homebrew. For more information, check out the Android CLI blog post and official documentation.

2. Android skills keep growing

To help models gain expertise for specific development patterns that follow our best practices, we are continuing to expand our repository of Android skills, available through Android CLI and GitHub.

Android skills ground LLMs in specialized workflows and domain knowledge, for the most common and more complex user journeys they might struggle with. We’ve shipped a fresh new batch of skills, with now more than 17 skills for areas such as:

Adaptive UI
Display Glasses and Jetpack Compose Glimmer for XR
Migration to CameraX
Perfetto SQL and Trace Analysis
Jetpack Compose Styles API
AppFunctions
Verified email retrieval with Android Credential Manager
Engage SDK integration
Testing setup
Wear OS Jetpack Compose Material3

Android skills keep growing

You can browse skills and install using the Android CLI commands:

android skills list
android skills add –skill=<skill-name>

For more information, check out the official documentation.

3. Android Bench adds new models

Earlier this year, we launched Android Bench - our leaderboard for testing LLMs on real-world Android development challenges and tasks, with the goal of accelerating model improvements, so you have more helpful options for AI assistance.

Latest results from Android Bench leaderboard

You asked us to evaluate open models. So, at I/O, we added more commonly used ones, including our local model Gemma 4, to the leaderboard. We also added the latest models including Gemini 3.5 Flash.

We are also working on increasing the difficulty of challenges we’re giving LLMs, including creating long running tasks, to continue encouraging improvements. These tasks will be coming soon to Android Bench. Check out the Android Bench leaderboard to see the latest results.

Android development anywhere

By expanding our AI-assisted Android development offerings to Antigravity, through Android CLI and Android skills, and solidifying with the pro capabilities and production grade polish of Android Studio, we’re supporting Android developers wherever they choose to build.

Have fun bringing your ideas to life faster and easier than ever before - we’re excited to see what you build in this new era of agentic development.

Check out the full Developer productivity at Google I/O 2026 YouTube playlist for more information.

Datadog delivers millions of in-depth performance insights with ProfilingManager

2026-06-08T06:00:00.000-07:00

Posted by Alice Yuan, Developer Relations Engineer at Google, Arti Arutiunov, Product Manager at Datadog and Nikita Ogorodnikov, Staff Software Engineer at Datadog

Performance regressions are notoriously hard to reproduce, making regressions a massive bottleneck for mobile developers. Although signals like ANR rates indicate what issues occur in production, pinpointing the specific line of code that resulted in the performance issue has historically necessitated exhaustive manual reproduction or speculative trial-and-error experimentation.

Datadog collaborated with Google to mitigate this frustration by integrating the ProfilingManager API (available on Android 15+ devices) into its Real User Monitoring (RUM) and Continuous Profiling platforms. This integration transforms the debugging workflow, allowing developers to move beyond surface-level symptoms to being able to detect the why behind a performance bottleneck.

By leveraging this system-level API, Datadog now processes millions of production profiles weekly across the globe according to Datadog internal data of June 2026. It provides engineering teams with a new level of visibility into real-world performance, all while maintaining a low runtime overhead for production-scale performance monitoring.

The impact of ProfilingManager

ProfilingManager is a system service introduced in Android 15 that enables apps to programmatically collect performance data such as call stack samples, field traces and memory heap dumps directly from production environments. This capability shifts the engineering paradigm from reactive manual reproduction to proactive field analysis.

For example, a Google communications app used field traces to investigate why its cold start times were slower on newer, more powerful hardware. By diving into the field-collected traces and comparing traces across different device types, the engineer discovered a hidden scheduling issue: a background text-to-speech service was unnecessarily being prewarmed during app startup. The traces revealed that this background process was monopolizing the device's highest-performing big CPU core, forcing the app's main thread to sleep while the prewarm occurred.

Solving the Android code-level visibility challenge

Prior to the implementation of ProfilingManager, Datadog’s Real User Monitoring (RUM) focused on high-level application health and session-level telemetry to assess the user journey. Engineering teams could monitor Android performance signals like time to initial display, ANR rates, CPU load, and frozen frames. These insights extended to granular interactions, such as network latency, touch events, and main thread hangs. However, while this data effectively highlighted which performance bottlenecks were surfacing in the field, it provided no clear path to identifying the root cause of these failures.

To address this, Datadog needed a profiling engine capable of capturing Android traces directly from devices in production with minimal performance impact. After evaluating alternative approaches, such as writing their own trace processor using Android Debug APIs, the team selected ProfilingManager because it is the most performant solution of the profiling options they evaluated and offloads the sampling decisions overhead to the OS.

ProfilingManager supports a wide range of collection methods, including CPU traces, call stack sampling, memory analysis through Java heap dumps and native heap profiles. It enables developers to profile production builds, upload trace files to external storage, and review them in the Perfetto trace analyzer UI. As a SaaS provider, Datadog uploads, visualizes, and analyzes these profiles collected via its SDK, providing a unified view of application health.

By centralizing high-fidelity telemetry within a unified observability API, ProfilingManager empowers Datadog and its clients to proactively monitor, investigate, and remediate complex Android performance regressions through key technical advantages:

Granular session diagnostics: ProfilingManager enhances debuggability by delivering direct OS-level trace data, overcoming the visibility and alignment challenges typical of custom logging with system services. To dive deeper, developers can download these traces from Datadog to investigate further in visualization tools like the Perfetto UI.
Automated telemetry triggers: By leveraging native system events to initiate trace recordings at key optimization points, Datadog reduces the need to build custom collection logic. While the initial rollout focuses on the APP_FULLY_DRAWN signal, there are already plans to expand this observability to include ANR, OOM, and COLD_START triggers.
Proactive trace snapshots: By interfacing directly with the system-level Perfetto service (traced), ProfilingManager utilizes a proactive background recording model designed to capture unpredictable issues. This ensures that developers receive a precise visualization of the events leading up to a performance anomaly, offering a level of insight that exceeds what is possible through manual instrumentation.
Bottleneck detection at scale: Datadog is able to synthesize telemetry from across Datadog’s global customer base to uncover regressions that only emerge under unique hardware configurations and variable network environments.
System-enforced resource stability: The API leverages sampling trace collection to ensure performance and user experience impacts remain unnoticeable.
On-device data controls: ProfilingManager filters out irrelevant information from other processes on-device before the profile is delivered to the app. This minimizes file sizes and ensures that only data relevant to the app's processes is provided.

Processing millions of weekly profiles to optimize real-world apps

An example of Datadog's time to initial display measurement with
stack sampling powered by ProfilingManager

Integrating a system-level profiling API into a global monitoring SDK required solving infrastructure challenges. Because ProfilingManager generates highly detailed performance traces, the Datadog engineering team had to build a pipeline capable of parsing and analyzing these profiles on the server side at scale. Beyond profile collection, Datadog also emphasizes the importance of balancing sampling frequency with collecting enough data to generate meaningful insights about your application. Datadog relies on ProfilingManager’s built-in rate limiting as a critical stability safeguard, preventing excessive telemetry requests from overburdening user devices.

The team has been profiling Datadog's own native Android application and a number of early adopters’ applications for months, gathering millions of profiles to ensure a fast, error-free launch experience and to refine their performance-detection algorithms. Today, the production integration seamlessly scales across a variety of Android devices.

Conclusion

By integrating Android’s ProfilingManager API, Datadog successfully closed the visibility gap between backend systems and mobile client applications for their customers. By processing millions of profiles weekly with negligible device overhead, Datadog equips Android developers with the code-level insights necessary to diagnose complex performance bugs instantly, helping developers build smoother applications and improve their app’s performance signals in the Play Store. To adopt the ProfilingManager API directly into your performance observability framework, check out our documentation.

In the future, Datadog aims to make Android profiling data a first-class input for coding agents to autonomously resolve performance bottlenecks, closing the feedback loop between detection and remediation. Datadog is working toward making Android profiling broadly accessible to developers.

To get started using the Datadog real user monitoring feature powered by ProfilingManager, visit Datadog Mobile Real User Monitoring.