dreamlikehotels

Get Start And End Of Week On Android

2023-10-12T03:34:00.001-07:00

I wonder how could I calculate start and end days of the current week ? I've found that this it not implemented in standard android libs or such lib as date4j. If there some easy a

Solution 1:

It doesn't take much code to do this with date4j. An example of calculating the first day of the week:

privatevoidfirstDayOfThisWeek(){
    DateTime today = DateTime.today(TimeZone.getDefault()); 
    DateTime firstDayThisWeek = today; //start value int todaysWeekday = today.getWeekDay();
    int SUNDAY = 1;
    if(todaysWeekday > SUNDAY){
      int numDaysFromSunday = todaysWeekday - SUNDAY;
      firstDayThisWeek = today.minusDays(numDaysFromSunday);
    }
    System.out.println("The first day of this week is : " + firstDayThisWeek);
  }

The above follows the convention that Sunday is the start of the week. In some jurisdictions, that convention doesn't apply, so you would need to change the code for such cases.

Solution 2:

Maybe MonthDisplayHelper could be of help for you.

Good luck!

Solution 3:

This worked for me...

Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
cal.set(Calendar.DAY_OF_WEEK, cal.MONDAY);
String firstWkDay = String.valueOf(cal.getTime());
//cal.set(Calendar.DAY_OF_WEEK, cal.SUNDAY);
cal.add(Calendar.DAY_OF_WEEK, 6);
String lastWkDay =  String.valueOf(cal.getTime());

For last day of the week, you could use cal.set(Calendar.DAY_OF_WEEK, cal.SUNDAY); but it returns previous sunday on some devices

Solution 4:

Try java.util.Calendar.getFirstDayOfWeek()... then it's easy to calculate the last day of week: http://developer.android.com/reference/java/util/Calendar.html#getFirstDayOfWeek()

Solution 5:

This kind of date-time work is often easier using the Joda-Time 2.3 library.

Taken from this answer to a similar question.

LocalDate now = new LocalDate();
System.out.println( now.withDayOfWeek(DateTimeConstants.MONDAY) );
System.out.println( now.withDayOfWeek(DateTimeConstants.SUNDAY) );

You can call isBefore/isAfter and minusWeeks/plusWeeks to get past/future values.

Why Is The Google Play Billing Library Not Shown Up In The Sdk Manager?

2023-10-12T02:03:00.001-07:00

I'd like to make an android application with in app purchases, I read often that I have to download the Google Play Billing Library from SDK Manager (e.g. http://www.techotopia.com

Solution 1:

Checking the offical blog:

Play Billing Library is available through Maven repository

Just add:

dependencies {
    ...
    compile'com.android.billingclient:billing:1.0'
}

You can find more details about the library in the official doc.

Solution 2:

You are referring to the old Google Play Billing library (v3), which if you really want to implement you can find it as part of the TrivialDrive demo app below. You can copy parts that you need (aidl, util) and change your app as per demo sample. https://github.com/googlesamples/android-play-billing/tree/master/TrivialDrive

~~~

The new version of Play Billing library v1.0 is covered by Garbriele Mariotti's answer (above). If you happen to use a platform that doesn't support Maven, Gradle or AARs I will be making it available soon (UPDAT to follow) as an Eclipse based project that you may be able to import into your IDE the same way you wanted to import the old library downloaded through SDK Manager (which probably doesn't include it anymore as they dev team doens't want you to use it anymore).

If you just want to download it and look at it, you can download it from here: https://google.bintray.com/play-billing/com/android/billingclient/billing/1.0/

~~~

Google Play Billing 1.0 library for Eclipse available from here: https://github.com/dandar3/android-google-services-billing/tree/1.0

Solution 3:

Play Billing Library is available through Maven repository.

Add in top level build.gradle file

    buildscript {
    mavenCentral()     
    }
    ................
    allprojects {
    repositories {
    mavenCentral()
       }
    }

Add dependency into module level build.gradle file.

   implementation 'com.android.billingclient:billing:1.0'

Then After implement in app billing sample example into your project.

https://codelabs.developers.google.com/codelabs/play-billing-codelab/#0

This link you can find sample code of in app billing example of google

https://github.com/googlesamples/android-play-billing

Android Set Default Keyboard

2023-10-12T01:05:00.001-07:00

i want to set scandinavian keyboard as default keyboard on an android device and i want to do this by code. So i try with InputMethodManager : InputMethodManager mng = (InputMethod

Solution 1:

Hi everybody, i want to set scandinavian keyboard as default keyboard on an android device and i want to do this by code.

You cannot modify the "default keyboard on an android device" via code from a standard SDK application. The user can choose their own keyboard and locale via the Settings application. You can send users to the proper Settings screen via ACTION_INPUT_METHOD_SETTINGS and ACTION_LOCALE_SETTINGS, which are activity Intent actions defined on android.provider.Settings.

Applications that are part of the device firmware can use DEFAULT_INPUT_METHOD on android.provider.Settings.Secure.

How To Show Icons In Actionbar Overflow Menu?

2023-10-12T00:28:00.001-07:00

I want to display icon in addition to menu item title in overflow dropdown menu. Is is possible?

Solution 1:

put your menu with property android:showAsAction="always" and in xml file of menu add sub menus under that your menu like this

<itemandroid:id="@+id/mainMenu"android:icon="@drawable/launcher"android:showAsAction="always"><menu><itemandroid:id="@+id/menu_logout"android:icon="@drawable/log_out"android:title="logout"/></menu></item>

this will show the icons in menus

Solution 2:

There is actually an easy way to achieve it, since what you see is actually a TextView, so you set a span , for example:

final MenuItem menuItem=...
final ImageSpan imageSpan=newImageSpan(this,R.drawable.ic_stat_app_icon);
final CharSequence title=" "+menuItem.getTitle();
final SpannableString spannableString=newSpannableString(title);
spannableString.setSpan(imageSpan,0,1,0);
menuItem.setTitle(spannableString);

This will put an icon at the beginning of the menu item, right before its original text.

Solution 3:

Hate answers like this but I am not good enough to give a better answer.

The icon for the overflow items for menu is the submenu2 line "subMenu2Item.setIcon(R.drawable.ic_launcher);" just replace ic_launcher with your icon file (in the res drawable directory of your program). Hope you mean using ActionBarSherlock.

The line subMenu1Item.setIcon(R.drawable.ic_launcher); is for the ActionBar icon for the Menu button at the top.

in response to "This is not possible by design"

Many thanks to Google for attempting to take over the world and letting us ride it's coat tails, BUT ... Google is too inconsistent to be grumpy over inconsistencies. It would be nice if Google could make an example for EVERY "set" of APIs they offer. There are API references to code, but no example about how to put them together, A whole completely working example that can be run as an APK is all I want. I can trick it out from there. If they can take the time to write the APK how much harder would it be to code a little example on a standard template? For 30% of everything it's not much to ask for. I had this same argument with Microsoft back in the day and it didn't happened then either. And thus and so you get stackoverflow. : ) Its a shame it takes some guy (rock on Jake Wharton) working on his own to do a better job with a backwards compatible Action bar than Google can come up with its ridiculous Action Bar Patch thingy.

@OverridepublicbooleanonCreateOptionsMenu(com.actionbarsherlock.view.Menu menu) {

    SubMenusubMenu1= menu.addSubMenu("Action Item");
    subMenu1.add("Help");
    subMenu1.add("About");

    MenuItemsubMenu1Item= subMenu1.getItem();
    subMenu1Item.setIcon(R.drawable.ic_launcher);
    subMenu1Item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT);

    SubMenusubMenu2= menu.addSubMenu("All Options");
    subMenu2.add("Help");
    subMenu2.add("About");

    MenuItemsubMenu2Item= subMenu2.getItem();
    subMenu2Item.setIcon(R.drawable.ic_launcher);

    returnsuper.onCreateOptionsMenu(menu);
}

Solution 4:

@OverridepublicbooleanonMenuOpened(int featureId, Menu menu)
{
    if(featureId == Window.FEATURE_ACTION_BAR && menu != null){
        if(menu.getClass().getSimpleName().equals("MenuBuilder")){
            try{
                Methodm= menu.getClass().getDeclaredMethod(
                    "setOptionalIconsVisible", Boolean.TYPE);
                m.setAccessible(true);
                m.invoke(menu, true);
            }
            catch(NoSuchMethodException e){
                Log.e(TAG, "onMenuOpened", e);
            }
            catch(Exception e){
                thrownewRuntimeException(e);
            }
        }
    }
    returnsuper.onMenuOpened(featureId, menu);
}

Reference : How To show icons in Overflow menu in ActionBar

Solution 5:

Maybe you have the same problem as me. So for me solution was easy if you are using AppCompat just dont use this property:

android:showAsAction="always"

instead use it like this:

<?xml version="1.0" encoding="utf-8"?><menuxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"><itemandroid:id="@+id/option"android:title="@string/option"android:icon="@drawable/option"app:showAsAction="always"></item></menu>

There is difference in aditional xmlns:app and showAsAction is property of app.

Hope it helps someone.

Textappearance.a Inherits From Textappearance.a.b Doesn't Cause A Circular Reference In Android Styles?

2023-10-11T22:36:00.001-07:00

I know that we have not to use parent attribute. We prefix one style to another style separating by a period(.) so in this style, does it have a circular inheritance?

Solution 1:

Technically As per Android Documentation I dont think this is possible, Because this will lead to duplication of style, If you refer to same as Diamond Problem it will be one of those, also android prevents you from inheriting from more than one style.

Further Imagine if you have one attribute which is defined in style A also in Style B, it will be a problem at compile time that which attribute to choose from both.

For More Details please refer to android documentation

https://developer.android.com/guide/topics/ui/look-and-feel/themes

Android 5.1 Push Notification Icon Is Blank

2023-10-11T19:15:00.001-07:00

When using Parse for push notifications our app always displayed the application's launcher icon. In the latest Android 5.1 version, the icon appears to be blank (a white square).

Solution 1:

You must use a transparent and white icon under Android Lollipop 5.0 or greater. You can extend ParsePushBroadcastReceiver class and override the two methods to get your notification icon compatible with these Android APIs.

@Overrideprotected int getSmallIconId(Context context, Intent intent) {
    return R.drawable.your_notifiation_icon;
}

@OverrideprotectedBitmapgetLargeIcon(Context context, Intent intent) {
    returnBitmapFactory.decodeResource(context.getResources(), R.drawable.your_notifiation_icon);
}

Remember to customize your code to support Lollipop and previous APIs.

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
        return BitmapFactory.decodeResource(context.getResources(), R.drawable.your_notifiation_icon_lollipop);
    }
    else{
        return BitmapFactory.decodeResource(context.getResources(), R.drawable.your_notifiation_icon);
    }

Solution 2:

It is not related to Parse or push nitification, but just how Android 5.0 handles notification icons. See this releated question for details: Notification bar icon turns white in Android 5 Lollipop

Solution 3:

Although @Pelanes has the correct answer (and should be accepted), here's what I did. Note that the Parse docs for getSmallIconId state the following:

Retrieves the small icon to be used in a Notification. The default implementation uses the icon specified by com.parse.push.notification_icon meta-data in your AndroidManifest.xml with a fallback to the launcher icon for this package. To conform to Android style guides, it is highly recommended that developers specify an explicit push icon.

So it is not entirely necessary to override the getSmallIconId() and getLargeIcon() methods.

What I did to solve the problem was I just made a copy of my icon, punched transparent "holes" into the icon, and set the com.parse.push.notification_icon meta-data in my manifest to point to this new icon.

For Android 5.0, it is required for your notification icon to be white and transparent, as others have mentioned. So creating the separate icon is necessary. One line in the manifest and one new drawable file is all it takes.

Solution 4:

Try this code.

BitmaplargeIcon= BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);

NotificationCompat.Builderbuilder=newNotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.ic_launcher)
                .setLargeIcon(largeIcon)
                .setContentText(data)
                .setContentTitle("Notification from Parse")
                .setContentIntent(pendingIntent);

Actionbar Like Evernote - Up Button And Tabs In One Row On Top With Menu Actions At Bottom

2023-10-11T18:21:00.001-07:00

I have app which has actionbar containing 1) up button which opens side bar menu for navigation just like google plus 2) 2 action menu buttons 3) 2 tabs implemented via view pag

Solution 1:

//enabling embedded tabs

//pre-ICSif (actionBarSherlock instanceof ActionBarImpl) {
    enableEmbeddedTabs(actionBarSherlock);

//ICS and forward
} elseif (actionBarSherlock instanceof ActionBarWrapper) {
    try {
        Field actionBarField = actionBarSherlock.getClass().getDeclaredField("mActionBar");
        actionBarField.setAccessible(true);
        enableEmbeddedTabs(actionBarField.get(actionBarSherlock));
    } catch (Exception e) {
        Log.e(TAG, "Error enabling embedded tabs", e);
    }
}

//helper methodprivatevoid enableEmbeddedTabs(Object actionBar) {
    try {
        Method setHasEmbeddedTabsMethod = actionBar.getClass().getDeclaredMethod("setHasEmbeddedTabs", boolean.class);
        setHasEmbeddedTabsMethod.setAccessible(true);
        setHasEmbeddedTabsMethod.invoke(actionBar, true);
    } catch (Exception e) {
        Log.e(TAG, "Error marking actionbar embedded", e);
    }
}

for further reference - https://groups.google.com/forum/#!topic/actionbarsherlock/hmmB1JqDeCk

How To Kill Cocos2d-x Test App

2023-10-11T16:57:00.001-07:00

We are creating an SDK that is used in Cocos2d-x games (on Android/iOS). As part of development, we have setup a test framework for running various tests on a real device (Android

Solution 1:

The sample project HelloCpp has an exit button in its example. Look at HelloWorldScene.cpp and at the function call back menuCloseCallback (function might vary a bit based on version of cocos2dx you are on)

voidHelloWorld::menuCloseCallback(CCObject* pSender){
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) || (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)CCMessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
#else
    CCDirector::sharedDirector()->end();
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)exit(0);
#endif#endif
}

For android the answer would be CCDirector::sharedDirector()->end();

Note that I don't think Apple will approve you if your app calls exit(0).

How To Change Built-in C/c++ Paths Pointing To A Deleted Android-ndk-r9 Installation?

2023-10-11T15:42:00.001-07:00

I recently upgraded my NDK from android-ndk-r9 to android-ndk-r10 (r10d to be exact). Eclipse is 4.4 Luna (Luna Service Release 1 (4.4.1); Build id: 20140925-1800). Eclipse is full

Solution 1:

Where is the setting coming from?

It appears the information is held in the project's pathInfo file. Below, the project is a sample JNI project called AndroidPrng.

$ cat /Users/jww/Eclipse/.metadata/.plugins/com.android.ide.eclipse.ndk/AndroidPrng.pathInfo 
t,1421045575000
i,/opt/android-ndk-r9/sources/cxx-stl/stlport/stlport
i,/usr/local/cryptopp/android-armeabi/include
i,/opt/android-ndk-r9/sources/cxx-stl/system/include
i,/usr/local/cryptopp/android-armeabi/include/cryptopp
i,jni
i,/opt/android-ndk-r9/platforms/android-14/arch-arm/usr/include
i,/usr/local/cryptopp/android-x86/include
i,/usr/local/cryptopp/android-x86/include/cryptopp
i,/opt/android-ndk-r9/platforms/android-14/arch-x86/usr/include
i,/usr/local/cryptopp/android-mips/include
i,/usr/local/cryptopp/android-mips/include/cryptopp
i,/usr/local/cryptopp/android-armeabi-v7a/include
i,/usr/local/cryptopp/android-armeabi-v7a/include/cryptopp
i,/opt/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.6/include
i,/opt/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.6/include-fixed
i,/opt/android-ndk-r9/platforms/android-14/arch-mips/usr/include
d,__STDC__,1
d,__INT64_MAX__,9223372036854775807LL
d,__LDBL_HAS_QUIET_NAN__,1
d,__WINT_TYPE__,unsigned int
d,__ORDER_LITTLE_ENDIAN__,1234
d,__DEC64_MAX_EXP__,385
d,__UINT_LEAST32_TYPE__,unsigned int
d,__UINT_FAST64_TYPE__,long long unsigned int
d,__GXX_WEAK__,1
...

I've grepped the following directories ... "My Eclipse workspace, ~/.eclipse, " ...

There were two problems here. First, the project is located on my desktop, and not my workspace directory. Second, the 100's of entries in the log files under org.eclipse.cdt.ui drowned out the entries 15 entries for com.android.ide.eclipse.ndk.

So, before you grep, perform:

rm Users/jww/Eclipse/.metadata/.plugins/org.eclipse.cdt.ui/*.log

That will produce manageable grep results.

And how do I change it?

Exercise left to the reader.

You can edit by hand; or you can delete it and Eclipse will recreate it with the new NDK-related paths.

Solution 2:

OP probably figured this out already but adding this here just for future reference.

Eclipse (currently) has issues with the r10d version (see the related discussion in https://stackoverflow.com/a/28108753/1591421). First, if possible one should rollback to an earlier version of the Android NDK (e.g. r10c seems to work just fine) and then make Eclipse point to the newly installed version of the NDK: Preferences -> Android -> NDK -> NDK Location. To let Eclipse pick up these changes the project needs to be deleted from the workspace and then added back (at least I had to). After the project has been re-imported one should see the NDK paths updated: Project -> Properties -> C/C++ General -> Paths and Symbols. Rebuilding the C/C++ Index (Project -> C/C++ Index -> Rebuild) won't hurt either :)

How To Make Draw Path Smooth While Drawing With Variable Width Stroke

2023-10-11T15:15:00.001-07:00

I created a sample drawing app where the user can draw using variable width stroke, So far drawing a path with variable stroke is working, but the lines drawn are not smooth. The c

Solution 1:

Instead of jumping immediately to a new stroke width when you detect a change, you could set a target and interpolate toward it until you reach it. Your mStrokes would need to be Floats instead of Integers.

privatestaticfinalfloat STROKE_DELTA = 0.0001f; // for float comparisonprivatestaticfinalfloat STROKE_INCREMENT = 0.01f; // amount to interpolateprivatefloat currentStroke = STROKE_WIDTH;
privatefloat targetStroke = STROKE_WIDTH;

Where you currently create a new path for a new stroke width, do something like this:

// if current not roughly equal to targetif( Math.abs(targetStroke - currentStroke) > STROKE_DELTA ) {
    // move towards target by the incrementif( targetStroke > currentStroke )
        currentStroke = Math.min(targetStroke, currentStroke + STROKE_INCREMENT);
    else
        currentStroke = Math.max(targetStroke, currentStroke - STROKE_INCREMENT);
    mPath.lineTo(mX, mY);

    mPath = newPath();
    mPath.moveTo(mX,mY);
    mPaths.add(mPath);
    mStrokes.add(currentStroke);
}

You would update targetStroke where you currently set variableWidthDelta.

Solution 2:

Your current code translates pretty much every touch move event (above a certain delta distance) into a new path segment. To make a smooth path, you need to do some processing on this large number of initial points that the user touched, and turn it into a smaller number of quad or cubic path segments.

Have a look at the demo on this page: http://paperjs.org/tutorials/paths/smoothing-simplifying-flattening/#simplifying-paths and the corresponding simplification code: https://github.com/paperjs/paper.js/blob/master/src/path/PathFitter.js

Obviously it's in JavaScript not Java, but you'll need to use a similar algorithm. An added complication will be that you will probably have to break down your smoothed path segments into multiple sub-segments again after smoothing to support varying stroke width within a single segment.

Why Android Does Not Handle A Deeplink Url Which Has # In The Path

2023-10-11T13:27:00.001-07:00

The url http://javaexample.com/#/topics is a valid url? I am try to deeplink the above url in the app using:

Solution 1:

The # in a URL indicates the beginning of the fragment component, which cannot be used for deep link criteria. Even though you've structured the fragment to look like a normal URL path to human eyes, the computer does not read it this way.

You'll need to reformat your URLs not to include any # character before the path.

Everything About Map

2023-10-11T12:11:00.001-07:00

I am new in android programming. I want to know about GPS. I searched and i know a little about this. anyway, i want to use Map, before i used com.google.android.maps.MapView in my

Solution 1:

To start on Google maps, You can refer this link https://developers.google.com/maps/documentation/android/start also MapView is deprecated now, so You have to move with Google Map Version 2.

Example Code : http://www.androidhive.info/2013/08/android-working-with-google-maps-v2/ All the Best..

Solution 2:

You should use Fragment. It is like that on layout;

<fragment
   android:name="com.google.android.gms.maps.SupportMapFragment"
   android:id="@+id/myMapView"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:clickable="true" />

To use that you should add google-play-services_lib project to your project build path. Then in your class you should implement FragmentActivity like that;

publicclassMainextendsFragmentActivity{

privateGoogleMap mMap;

UiSettings settings;
MapController mapController;
GeoPoint geopoint;
RectF oval;
Canvas canvas;
int mRadius = 5;

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    setUpMap();
}

@OverrideprotectedvoidonResume(){
    super.onResume();
    setUpMap();
}

privatevoidsetUpMap(){
    if (mMap != null) {
        return;
    }
    mMap=((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.myMapView)).getMap();
    if (mMap == null) {
        return;
    }
    mMap.setMyLocationEnabled(true);
    mMap.getUiSettings().setCompassEnabled(true);
    mMap.getUiSettings().setMyLocationButtonEnabled(true);

    mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(place1, 15));
    mMap.setTrafficEnabled(true);
    mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);           

}

You should obtain an apikey for google maps from this link or you can continue step by step from this link

Add your apikey and permissions to Manifest file like that;

<uses-permissionandroid:name="your_package.permission.MAPS_RECEIVE"/><uses-permissionandroid:name="android.permission.INTERNET" /><uses-permissionandroid:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/><uses-permissionandroid:name="android.permission.ACCESS_FINE_LOCATION"/><meta-dataandroid:name="com.google.android.maps.v2.API_KEY"android:value="your_api_key"/>

Note: meta-data must be inside of application in your manifest.

Gson - Convert From Json To List<>

2023-10-11T11:30:00.001-07:00

i'm having an issue converting Json to List<>, I have tried different solutions but no clue My json result looks like : { 'Return':0, 'List':[ { '

Solution 1:

In this JSON, you get a list of {Code, Label} objects, but in the List property of an object.

You first need to encapsulate this list in an other object. As in:

publicclassQuestionaireList {
  publicList<Questionaire> List;
}

List<Questionaire> qsts = gson.fromJson(result,  QuestionaireList.class).List;

Solution 2:

You need another class that maps the full result

publicclassMyJson{
     @SerializedName("List")private List<Questionaire> list;

    @SerializedName("Return")private Integer return1;

    //... getters and setters
}

Your type then needs to bind to "MyJson" or whatever you name the class.

Solution 3:

I'm assuming it's the List part you want to map to 'qstList'. If so then you need to extract it from the rest of the json first:

Gsongson=newGson();
JsonObjectresultObj= gson.fromJson(result, JsonObject.class);
JsonArrayjsonList= resultObj.get("List").getAsJsonArray();
TypelistType=newTypeToken<List<Questionaire>>(){}.getType();
qstList = gson.fromJson(jsonList, listType);

Get My Location

2023-10-11T11:00:00.001-07:00

I have a ListFragment and I want to get the my location. In my Manifest I have added this: and my

Solution 1:

First you need to know about GPS, Network Provider, google MAP to know getting location. Below example is for beginner to know how to get location(lanlat value) from the GPS and Network Provider

Follow this link:

Getting location (latlong)

If you want to get a location name then u must know about SHA code and all.

Follow this Link:

Getting location from googlemap

Json Fetch Dosen't Work Correctly In Real Host But Work In Localhost

2023-10-11T10:39:00.001-07:00

I have this json in my free host : http://alibhm.epizy.com/fetch_turbine2.php As you seen fetching work correctly if run this in browser and fetch two parameter . But when put this

Solution 1:

after one week i found answer :) my code don't have problem . everything cause by some free hosting protection . some free hosting have protection against bots . and my app known as bot for this host . i change my host and everything work like charm :) . i recommend use paid hosts to pass problems.

Is There An Api To Get Sales Report On Google Play?

2023-10-11T07:30:00.001-07:00

We have an Androïd app on Google Play and I'd like to retrieve the sales report programmatically. Apple provides the Autoingestion tool which allows a Java app to retrieve them, a

Solution 1:

Google Checkout (which is used by Play for billing) has an API, but you need a merchant key to use it, and it is not available in all countries.

https://developers.google.com/checkout/samplecode

As someone pointed out below, Google Checkout has been discontinued. The new Google Wallet site does not offer a real API, but you can download your reports, which are stored on Google Drive, using the Google Drive API or command line tools. Reports are in CSV format, so they are easy to parse.

Additionally, the Google Play Developer console now shows sales data. Checkout the Andlytics app, it can fetch and display sales numbers (available in the alpha version). It is also open source.

https://play.google.com/store/apps/details?id=com.github.andlyticsproject

Edit 2014/02/18

Wikipedia

Google Checkout was discontinued on November 20, 2013. The company offered a new solution for certain payments called Google Wallet

Solution 2:

I only have seen Apps that show a webview of the Developer Console. I noticed the URL to the statistic is always the same, year + month, so you could try and read this in. Sadly it only shows sales and not downloads. https://play.google.com/apps/publish/salesreport/download?report_date=2012_05&report_type=sales_report&dev_acc=%%YOUR_ACC_NUMBER%%

But there seems to be some kind of api when you look at the ajax-requests in the developer console: https://play.google.com/apps/publish/statistics?dev_acc=%%YOUR_ACC_NUMBER%% POST: method -> "getCombinedStats"

Music Player Play 2 Song At The Same Time

2023-10-11T06:06:00.001-07:00

i'm a beginner and i have some trouble with my android app. my app have 2 activities. the first is PlayerActivity.java it will list all song in sdcard by a listView and when i clic

Solution 1:

In PlaysongActivity, override onStop() and call release() on the MediaPlayer.

This will stop playback (and release resources) when you exit that activity.

Can Reflection Be Used With Methods That Belong To Greater Than Minimum Sdk?

2023-10-11T04:04:00.001-07:00

I am developing an app which has to support at minimum level 10 sdk. Today, I was coding when I came across a method setLayerType() which I need to use. But this method is introduc

Solution 1:

No, of course the app will crash if you call a method that is not present in its API level. This is true whether you call by reflection or not.

The point of reflection is that you choose whether or not to call it based on the API level. Compare http://developer.android.com/reference/android/os/Build.VERSION.html#SDK_INT to http://developer.android.com/reference/android/os/Build.VERSION_CODES.html in your code and only proceed with the reflective call if the SDK number is high enough.

The point is that you isolate code with bytecode references to any method or constant or class that's not present in all API levels into a separate class that is only loaded by reflection.

Here's an example of some utility code I created just to manage this kind of thing; it loads one or the other implementation of an interface based on API level:

https://code.google.com/p/zxing/source/browse/trunk/android/src/com/google/zxing/client/android/common/PlatformSupportManager.java?spec=svn2361&r=2361

EDIT: @FD_'s answer works too which surprises me. Reflection is safer, but much more code. And it seems like the reflection approach is in fact unnecessary on recent, if not all, Android JVMs.

Solution 2:

You don't even need Reflection for that. Just specify your target sdk as high as possible, and your min sdk as low as it is now. Then, before calling a method that was introduced after the min version, just check which api version your app is running on:

if (android.os.Build.VERSION.SDK_INT >= 11) {
    //Your code here
}

Trying to use methods that were introduced in a later api version will lead to a crash otherwise, whether you call it using Reflection or not.

Docx Conversion

2023-10-11T00:40:00.001-07:00

I am doing simple docx conversion app in android. File file = new File(path + 'Sample1.docx'); FileInputStream fis = new FileInputStream(file); XWPFDocument document = new XWPFD

Solution 1:

I was able to make JWord working under Android. Had many issues with Apache POI like you have (Conversion to Dalvik format failed).

Does This Custom Compare Method Contain A Logical Error

2023-10-10T23:57:00.001-07:00

In an android application, I have a list of locations. I need to sort them based on their distance with the user location. for that I implemented a custom comparator: Collections.s

Solution 1:

As Peter Lawrey said, you should use Double.compare(x, y) or Float.compare(x, y) instead of casting to int. Here the explanation:

Comparator MUST be transitive, i.e. whenever A == B and B == C, then also A == C. Lets imagine we have three points A, B and C with the distances to the user location 0.2, 0.4 and 1.3.

(int) (0.2 - 0.4) = (int) (-0.2) = 0 => A == B
(int) (0.4 - 1.3) = (int) (-0.9) = 0 => B == C
(int) (0.2 - 1.3) = (int) (-1.1) = -1 => A < C

As you can see the comparator is not transitive.

Solution 2:

If userLocation == null then house1.equals(house2) should give true.

Handling Dvm Killing Your Activity

2023-10-10T23:16:00.001-07:00

I have an activity which fetches huge set of data from the network and i want to handle the scenario for this activity if the DVM decides to destroy this activity (due to low memor

Solution 1:

Depending on the data you need to savior you could pass in the data (if it's primitive types) into the Bundle of the Activity and override the onPause method of the activity. The onPause method will be called whenever the Activity closes.

See the activity lifecycle for reference http://developer.android.com/reference/android/app/Activity.html

There are other ways to save the data - you could write it directly to a file on the SD card and then close the stream in the onPause method if the Activity is closed by the OS without finishing the data.

Then when the Activity is opened again you call the onResume method of the Activity and read the data saved inside the Bundle or the file written to the SD card.

Android Backstack Clear But Keep Root

2023-10-10T21:58:00.001-07:00

I am currently writing a chat app. It is basically very similar to WhatsApp: On Startup there is last conversation overview. When I want to start a new conversation with somebody

Solution 1:

Define Activity A1's android:launchMode as singleTop at your manifest. Handle back button press at Activity A4 and start your Activity A1 like below:

Intent intent = newIntent(A4.this,  A1.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | FLAG_ACTIVITY_SINGLE_TOP);
startActivity(intent);

With this your A2, A3 will be cleared from stack.

See more for intents.

Edit: This will work for your [A1, A2, A3 , A4] -> back -> [A1] requirement

Solution 2:

Try to do it consistent with the Android design. The back button goes back one activity.

Instead use the home button of the Action Bar.

Android design pattern for navigation;

Create the ActionBar:

finalActionBaractionBar= getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayHomeAsUpEnabled(true);

Go back to top intent when HomeButton got clicked:

final Intent intent = newIntent(this, MainPage.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);

How To Prevent Double Code Running By Clicking Twice Fast To A Button In Android

2023-10-10T20:39:00.001-07:00

If i click fast to my button in my Android app, it seems that code behind it runs twice. If i click my menu button twice the activity that has to be launch onclick just starts twic

Solution 1:

You can use following code: btn.setEnabled(false);

btn.setOnclickListener(newView.onClickListener(){

      publicvoidonClick(View v) {
            btn.setEnabled(false);

      }
});

Solution 2:

You can Disable the view temporarily like this

publicstaticvoiddisableTemporarly(final View view) {

        view.setEnabled(false);
        view.post(newRunnable() {
            @Overridepublicvoidrun() {

                view.setEnabled(true);
            }
        });
    }

Edit:

The above solution will work fine. But it will become even better when using the power of Kotlin

1) Create the SafeClikc Listener

classSafeClickListener(
        privatevar defaultInterval: Int = 1000,
        privateval onSafeCLick: (View) -> Unit
) : View.OnClickListener {

    privatevar lastTimeClicked: Long = 0overridefunonClick(v: View) {
        if (SystemClock.elapsedRealtime() - lastTimeClicked < defaultInterval) {
            return
        }
        lastTimeClicked = SystemClock.elapsedRealtime()
        onSafeCLick(v)
    }
}

2) Add extension function to make it works with any view, this will create a new SafeClickListener and delegate the work to it

fun View.setSafeOnClickListener(onSafeClick: (View) -> Unit) {

    val safeClickListener = SafeClickListener {
        onSafeClick(it)
    }
    setOnClickListener(safeClickListener)
}

3) Now it is very easy to use it

settingsButton.setSafeOnClickListener {
    showSettingsScreen()
}

Happy Kotlin ;)

Solution 3:

Button.setOnClickListener(newView.OnClickListener {  
   @OverridepublicvoidonClick(final View v) {
        v.setEnabled(false);
        v.postDelayed(newRunnable() {
         @Overridepublicvoidrun() {
            v.setEnabled(true);
         }
        },150); //150 is in milliseconds
    }
 });

Solution 4:

Well, that's the expected behaviour...

Launch your new acvitity with SINGLE_TOP flag

Or try setting android:launchMode="singleInstance" for Top20 activity in your AndroidManifest.xml

Solution 5:

This solves the issue of multiple Instances of activity, and still play the default animation

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

Ffmpeg Jni In Android?

2023-10-10T19:27:00.001-07:00

I have built FFMPEG executables and libraries as provided by Bambuser (http://bambuser.com/opensource). So I managed to build the Android executables and libraties. How can I link

Solution 1:

You have to write some C glue code using the JNI conventions to expose the FFmpeg functionalities to Java code. Here's an example of a JNI method implemented in C from the Android NDK samples:

jstring
Java_com_example_hellojni_HelloJni_stringFromJNI( JNIEnv* env,
                                                  jobject thiz )
{
    return (*env)->NewStringUTF(env, "Hello from JNI !");
}

You also need some Java code to load the library and declare the native method.

publicclassHelloJni
{
    public native String  stringFromJNI();

     static {
        System.loadLibrary("hello-jni");
    }
}

I found this project on sourceforge which already has implemented some JNI interface to ffmpeg to integrate it with the Java Media Framework. You may find it useful.

There's another Java FFI technology called JNA (Java Native Access) that allows you to declare native function prototypes in Java and call them directly. Using it may require less boilerplate code. See this project for an Android implementation. (I have never used it myself)

Opengl Es 3.0 Matrix Array Only Using First Matrix

2023-10-10T18:42:00.001-07:00

I am doing GPU skinning in my vertex shader which works fine on PC, and which I'm porting to Android. My vertex shader is below, and the problem is that the creation of the matTran

Solution 1:

In the end this looks to be a limitation of the Adreno driver, which doesn't support indexing a uniform array of matrices without a constant integer contrary to what is mandatory within the OpenGL ES spec. A workaround however is to just use a uniform array of vec4s, as it does seem to support indexing these with variables (as is done within their SDK).