Heaven of all working codes

Starting with Google Maps V2 in Android

2016-01-21T01:09:00.002-08:00

Starting with Google Maps V2 in Android Hi all, In today's tutorial lets see 1. How we can add a Google Map to our Android project using Android Studio? 2. Showing a location in the Google Map. 3. Adding Markers in Google Map. 4. Getting location on Tapping on Marker info Window in Google Maps. Before you start coding, make sure Android studio is all set up for Running the Maps application. You will need Google play Services In the app-level build.gradle add this

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.5.0'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

In the Module-level build.gradle add this in the dependencies

dependencies{
 compile 'com.google.android.gms:play-services:8.4.0'
 compile 'com.android.support:support-v4:23.1.1'
}

android{
 compileSdkVersion 'Google Inc.:Google APIs:23'    
 buildToolsVersion '23.0.2'
}

These are the main things you may have your own settings in the build.gradle. How we can add a Google Map to our Android project using Android Studio? Take a look at the screenshot for adding new project to your Android Studio and click finish. [Image 1] Now Google will create everything you need for a MapActivity except the Google Maps Key. You need to get the Google maps key before proceeding. For that you need to sign in to Google and navigate to https://developers.google.com/maps/documentation/android-api/. Follow the instructions and get the key. A sample key would look like this. "AIzaSyC1mQQLwwcms-bAaNmhKUNiW_HBjftQiSE" Once you get the key, you can start coding. Now we will check our layout. In the layout I am adding once edittext to search for a location in maps. The final layout would look like this. [xml] [/xml] Here is our Activity... This is the complete activity where we will add a marker on searched location. Then we will add a tap listener on the info window in the marker to get the location. [java] package com.catalinamarketing.activities; import android.content.Context; import android.location.Address; import android.location.Geocoder; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.util.Log; import android.view.KeyEvent; import android.view.inputmethod.EditorInfo; import android.widget.EditText; import android.widget.TextView; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.OnMapReadyCallback; import com.google.android.gms.maps.SupportMapFragment; import com.google.android.gms.maps.model.CameraPosition; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.Marker; import com.google.android.gms.maps.model.MarkerOptions; import com.google.android.maps.GeoPoint; import com.modivmedia.mcscan.R; import java.util.List; public class MapActivity extends FragmentActivity implements OnMapReadyCallback, GoogleMap.OnMarkerClickListener { private GoogleMap mMap; public static final String TAG = "MAP"; EditText searchLocationTv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_map); searchLocationTv = (EditText) findViewById(R.id.searchTxt); // Obtain the SupportMapFragment and get notified when the map is ready to be used. SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() .findFragmentById(R.id.map); mapFragment.getMapAsync(this); // Acquire a reference to the system Location Manager LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE); // Define a listener that responds to location updates LocationListener locationListener = new LocationListener() { public void onLocationChanged(Location location) { // Called when a new location is found by the network location provider. setLocationInMap(location); } public void onStatusChanged(String provider, int status, Bundle extras) { } public void onProviderEnabled(String provider) { } public void onProviderDisabled(String provider) { } }; // Register the listener with the Location Manager to receive location updates locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener); searchLocationTv.setOnEditorActionListener(new TextView.OnEditorActionListener() { public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId == EditorInfo.IME_ACTION_DONE)) { Log.i(TAG, "Enter pressed"); GeoPoint g = getLocationFromAddress(searchLocationTv.getText().toString().trim()); double latitude = g.getLatitudeE6() / 1E6; double longitude = g.getLongitudeE6() / 1E6; Location location = new Location(searchLocationTv.getText().toString().trim()); location.setLatitude(latitude); location.setLongitude(longitude); setLocationInMap(location); } return false; } }); } /** * Manipulates the map once available. * This callback is triggered when the map is ready to be used. * This is where we can add markers or lines, add listeners or move the camera. In this case, * we just add a marker near Sydney, Australia. * If Google Play services is not installed on the device, the user will be prompted to install * it inside the SupportMapFragment. This method will only be triggered once the user has * installed Google Play services and returned to the app. */ @Override public void onMapReady(GoogleMap googleMap) { mMap = googleMap; mMap.setOnMarkerClickListener(this); Log.i(TAG, "Map is ready..."); mMap.setOnInfoWindowClickListener( new GoogleMap.OnInfoWindowClickListener() { @Override public void onInfoWindowClick(Marker arg0) { // TODO Auto-generated method stub arg0.hideInfoWindow(); double dlat = arg0.getPosition().latitude; double dlon = arg0.getPosition().longitude; String slat = String.valueOf(dlat); String slon = String.valueOf(dlon); Log.i(TAG, "LAt " + dlat + "Long = " + dlon); } } ); } private void setLocationInMap(Location location) { Log.i(TAG, "Setting Location in Map..."); LatLng myLocation = new LatLng(location.getLatitude(), location.getLongitude()); mMap.addMarker(new MarkerOptions().position(myLocation).title(searchLocationTv.getText().toString().trim())).showInfoWindow(); CameraPosition cameraPosition = new CameraPosition.Builder().target(myLocation).zoom(2).build(); mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition)); } //Find 5 names and return the first one for the name provided.. private GeoPoint getLocationFromAddress(String strAddress) { Geocoder coder = new Geocoder(this); List

address; GeoPoint p1 = null; try { address = coder.getFromLocationName(strAddress, 5); if (address == null) { return null; } Address location = address.get(0); location.getLatitude(); location.getLongitude(); p1 = new GeoPoint((int) (location.getLatitude() * 1E6), (int) (location.getLongitude() * 1E6)); } catch (Exception e) { } return p1; } @Override public boolean onMarkerClick(final Marker marker) { Log.i(TAG, "marker clicked"); marker.showInfoWindow(); return true; } } [/java] Here is how the AndroidManifest.xml will look like.. Make sure you add the permissions for location and internet here.. Also add the Android Maps API key. [xml]

[/xml] You are now ready to run the application.

How to read a folder structure in the assets folder in Android?

2013-05-27T23:08:00.000-07:00

    AssetManager mngr_spinner = getAssets();
 try {
           int img_count = 0;
           folder_array = mngr_spinner.list(parent_folder_name);
    labels_array = new String[folder_array.length];
           for (int i = 0; i < folder_array.length; i++) 
        {
    // System.out.println("Folder " + folder_array[i]);
    if ((folder_array[i].endsWith(".png") || folder_array[i].endsWith(".jpg"))) 
         {
           img_count++;
         }
        }
      } catch (IOException e1) 
                  {
     e1.printStackTrace();
    }

Note : The folder will not be read if it has no contents in it.

Samsung Galaxy S4

2013-05-26T21:51:00.001-07:00

Display
5inch Full HD Super AMOLED (1920 x 1080) display, 441 ppi

AP
1.9 GHz Quad-Core Processor / 1.6 GHz Octa-Core Processor
The seletion of AP will be differed by markets
Network
2.5G (GSM/ GPRS/ EDGE): 850 / 900 / 1800 / 1900 MHz
3G (HSPA+ 42Mbps): 850 / 900 / 1900 / 2100 MHz
4G (LTE Cat 3 100/50Mbps) : up to 6 different band sets (Dependent on market)
OS
Android 4.2.2 (Jelly bean)

Memory
16 / 32 / 64GB memory + microSD slot (up to 64GB), 2GB RAM
Camera
Main(Rear): 13 Mega pixel Auto Focus camera with Flash & Zero Shutter Lag, BIS
Sub (Front): 2 Mega pixel camera, Full HD recording @30fps with Zero Shutter Lag, BIS

Camera Features
Dual Shot , Drama Shot, Sound & Shot, 360 Photo, Animated Photo, Eraser, Night, Best Photo, Best Face, Beauty Face, HDR (High Dynamic Range), Panorama, Sports

Video
Codec: MPEG4, H.264, H.263, DivX, DivX3.11, VC-1, VP8, WMV7/8, Sorenson Spark, HEVC
Recording & Playback: Full HD (1080p)
Audio
Codec: MP3, AMR-NB/WB, AAC/AAC+/eAAC+, WMA, OGG,
FLAC, AC-3, apt-X
Additional Features
Group Play: Share Music, Share Picture, Share Document,
Play Games
Story Album, S Translator, Optical Reader
Samsung Smart Scroll, Samsung Smart Pause, Air Gesture,
Air View
Samsung Hub, ChatON (Voice/Video Call, Share screen,
3-way calling) Samsung WatchON
S Travel (Trip Advisor), S Voice™ Drive, S Health
Samsung Adapt Display, Samsung Adapt Sound, Auto adjust touch sensitivity (Glove friendly)
Safety Assistance, Samsung Link, Screen Mirroring
Samsung KNOX (B2B only)
Google Mobile Services
Google Search, Google Maps, Gmail, Google Latitude Google Play Store, Google Plus, YouTube, Google Talk, Google Places, Google Navigation, Google Downloads, Voice Search
Sensor
Accelerometer, RGB light, Geomagnetic, Proximity, Gyro,
Barometer
Temperature & Humidity, Gesture
Dimension
136.6 x 69.8 x 7.9 mm, 130g

Connectivity
WiFi 802.11 a/b/g/n/ac (HT80)
GPS / GLONASS
NFC, Bluetooth® 4.0 (LE)
IR LED (Remote Control), MHL 2.0
Battery
2,600mAh

Facebook CEO - Mark Zuckerberg on top CEO List

2013-03-17T10:17:00.005-07:00

The Facebook chief earned a 99 percent approval rating from his social network employees, topping Glassdoor's annual list of the 50 highest rated CEOs.

Glassdoor surveyed hundreds of thousands of employees across various industries, and based on their feedback over the past 12 months, ranked the most impressive bosses, one of which happens to be hoodie-wearing billionaire Zuck.

Read the complete story here

http://www.pcmag.com/article2/0,2817,2416651,00.asp

Samsung to Launch First Tizen-Powered Phone

2013-03-16T10:07:00.002-07:00

In an interview with The Wall Street Journal, Samsung mobile chief J.K. Shin said Samsung plans to release a Tizen-powered phone in the third quarter, raising questions about whether it is planning to move away from Google’s Android in the future.

Read more from here
http://blogs.wsj.com/digits/2013/03/14/samsung-to-launch-first-tizen-powered-phone-in-3q/

How to load a spinner with values from SQlite Database in android?

2012-12-29T07:18:00.002-08:00

Here is a simple example showing how to load a database values in a spinner in android.

OK we will start.
This is the layout for the spinner row.
spinner_row.xml

activity_main.xml

Read the complete post here...

http://www.coderzheaven.com/2012/11/18/load-spinner-values-sqlite-database-android/

How to crop an Image in Android?

2012-12-29T07:16:00.007-08:00

This is a sample program that launches the camera and crop the captured image.

Check this link to another crop image example.

This is the layout xml.
<strong>activity_main.xml</strong>

[xml]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="3dp"
android:text="@string/intro"
android:textStyle="bold" />

<Button
android:id="@+id/capture_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/capture" />

<ImageView
android:id="@+id/picture"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:contentDescription="@string/picture" />

</LinearLayout>
[/xml]

Now this is the Main Java File that implements the crop functionality.

Read More from here...

http://www.coderzheaven.com/2012/12/15/crop-image-android/

Select an Image from gallery in ANDROID and show it in an ImageView.

2012-12-24T03:57:00.002-08:00

Hi all
In this tutorial I will show you how to get an image from your phone gallery and show it in an imageview.
Here we use intents to open up the image gallery and get the image URI.
Here I am setting the image type as “image” to get only the images.
And on onActivityResult if the result is OK, then get the data using getData() function and converting the imageURI to the stringPath.

Read more from here
http://www.coderzheaven.com/2012/04/20/select-an-image-from-gallery-in-android-and-show-it-in-an-imageview/

Customizing a spinner in android.

2012-12-15T19:35:00.002-08:00

Hello everyone.........

You all knew that a spinner or combobox is an inbuilt widget in android. And Like any other widgets spinners are also customizable. Here is a simple example to customize a spinner. First we will look at the java code. The getView method is called for each row in the spinner. So with the help of an Layout Inflater you can inflate any layout for each row. At extreme you can have each layout for each row. Check these older posts about spinner.

1. How to get a selected Item from a spinner in ANDROID?
2. How to set an item selected in Spinner in ANDROID?
3. How to create a custom ListView in android?

Check out these of ListViews

1. Simplest Lazy Loading ListView Example in Android with data populated from a MySQL database using php.
2. How to add checkboxes and radio buttons to ListView in android? OR How to set single choice items in a ListView in android?

Read complete code from here http://www.coderzheaven.com/2011/07/18/customizing-a-spinner-in-android/

ActionBar with Search Option and other options in Android.

2012-11-05T23:29:00.001-08:00

This is the example showing how to start with ActionBar in android.

1. <a href="http://www.coderzheaven.com/2012/01/28/android-removes-the-need-of-menu-button-from-devices-with-actionbar/" title="ActionBar" target="_blank">Android removes the need of Menu button from devices with ActionBar.</a>

2. <a href="http://www.coderzheaven.com/2012/08/23/start-actionbar-android/" title="ActionBar" target="_blank">How to start with ActionBar in Android?</a>

3. <a href="http://www.coderzheaven.com/2012/09/28/dynamically-adding-removing-toggling-removing-actionbar-tabs-android-part-2/" title="ActionBar" target="_blank">Dynamically Adding, Removing, Toggling and Removing all ActionBar Tabs in Android – Part 2?</a>

Read complete post from here..

http://www.coderzheaven.com/2012/10/20/actionbar-search-option-options-android/

How to initialize an ArrayList in Android?

2012-07-21T11:43:00.001-07:00

ArrayList<String> images_arr =
new ArrayList<String>(){
private static final long serialVersionUID = -1773393753338094625L;
{
add("string1");
add("string2");
add("string3");
add("string4");
}
};

How to delete a contact in android?

2012-07-04T10:48:00.001-07:00

Hello all previously I have shown how to list all contacts in your phone and in another post I showed how to programatically create a contact in android
In today's tutorial I will show you how to delete a contact in android programatically.

This simple code does that.

Read more
http://www.coderzheaven.com/2012/06/23/delete-contact-android/

How to get a Sprite by tag in Cocos2D ?

2012-06-28T11:12:00.000-07:00

Hi,

Sometimes you may need to get a sprite using tag while doing a project using Cocos2D. It's easy to get a sprite by a tag in Cocos2D, use the following code to get it.

[java]tempSprite = (CCSprite*)[self getChildByTag:7];[/java]

Here 'tempSprite' is your CCSprite and it will get the sprite with tag 7.

:)

How to explicitly free memory in android OR Release unwanted memory in Android?

2012-06-19T10:53:00.000-07:00

public void freeMemory(){
System.runFinalization();
Runtime.getRuntime().gc();
System.gc();
}

Visit http://www.coderzheaven.com/2012/04/24/explicitly-free-memory-android-release-unwanted-memory-android/ for more information.

Placing Controls in a Widget in Android and Listening to the events from them.

2012-06-16T10:05:00.002-07:00

Now in today’s tutorial I am going to show how to place controls like buttons inside the widget and listen to their events and respond to it.

I am proceeding the same as the previous tutorials.

First I will create a new project named “ControlsInWidget” and name the activity “MyActivity.java”.

Now we will create a layout for this main activity. settings.xml

These are the contents of settings.xml

<TableLayout android:id="@+id/TableLayout01"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

xmlns:android="http://schemas.android.com/apk/res/android">

<TextView android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:id="@+id/tv1"

    android:text="CoderzHeaven Widget Settings Activity"

    android:textColor="@android:color/white"

    android:textSize="15dip"

    android:textStyle="bold"

    android:layout_marginTop="5dip"/>

</TableLayout>

Read the complete post from here.

http://www.coderzheaven.com/2012/06/15/placing-controls-widget-android-listening-events-them/

How to get Notified when a widget is deleted?

2012-06-13T10:25:00.003-07:00

I have already covered a tutorial on how to start with widgets and how to create a simple widget here..

<a href="http://www.coderzheaven.com/2012/06/07/create-widget-android/" title="Create a Widget" target="_blank">http://www.coderzheaven.com/2012/06/07/create-widget-android/</a>

Today I will show you how to get notified when a widget is deleted.

if you have already gone through my <a href="http://www.coderzheaven.com/2012/06/07/create-widget-android/" title="Create a widget" target="_blank">previous post</a>, then there is only a small change in the "MyWidget.java" file.

we have to add the onReceive() method to the class like this.

Read complete post from here...

http://www.coderzheaven.com/2012/06/10/notified-widget-deleted/

Android hits 900k activations per day

2012-06-13T10:23:00.002-07:00

The Google Android Army is coming again...

Google’s Android platform sees 900,000 activations a day, according to a tweet from Android head Andy Rubin. The statistic, of course, doesn’t distinguish between smartphones and tablets, so it’s hard to get a clear picture of the Android ecosystem.

<img src="http://coderzheaven.com/uploads/images/Google-Android-army.jpg" alt="Google Android" />

See more about this new from here.

http://www.washingtonpost.com/business/technology/android-hits-900k-activations-per-day/2012/06/11/gJQA1tlfUV_story.html

CoderzHeaven on Facebook, New Fan Page

2012-06-10T00:42:00.000-07:00

Please find us on Facebook for more updates.

This is our new Fab page Url.

http://www.facebook.com/CoderzHeavenFans

By adding us on Facebook, you can get access to our new updates fast and get answers to your questions quickly.

So please add us on Facebook.

Please find us on Twitter also..

https://twitter.com/coderzheaven

How to read a text file in ANDROID?

2012-06-04T09:51:00.002-07:00

Hi all…..

In this post I will show you how to read a text file in ANDOID.
Let your file is in the assets folder of your ANDOID project.
The file is named “myfile.txt”

This example reads the file line by line using readLine() function till the end of the file. Here your need two classes named “InputStreamReader” and “BufferedReader”. For writing into the file you need “OutputStreamReader” class. The result is displayed in a Toast. Make sure you notice it.

Read more from here...

http://www.coderzheaven.com/2012/04/22/how-to-read-a-text-file-in-android-2/

How to use Accelerometer in Android?

2012-06-01T10:57:00.001-07:00

http://www.coderzheaven.com/2012/05/30/accelerometer-android/

Crop an Image in ANDROID.

2012-05-27T11:11:00.003-07:00

Cropping an image in <a href="http://www.coderzheaven.com/android/" target="_blank">ANDROID</a> programmatically has always been a problem for ANDROID developers.
So Here I am putting a sample code to demonstrate this.
For cropping an <a href="http://www.coderzheaven.com/?p=1397" target="_blank">image in ANDROID</a> we need a source bitmap which is our image itself, the other one is the target <a href="http://www.coderzheaven.com/?p=3911" target="_blank">bitmap</a> which we have to
set the size as we want and a matrix.

Read the complete post from here..

http://www.coderzheaven.com/2011/03/15/crop-an-image-in-android/

Custom progressbar in android with text - part 3

2012-05-24T11:34:00.001-07:00

Hello all......

I have posted two posts on how to customize a progressbar in android.

1. <a href="http://www.coderzheaven.com/2012/03/29/custom-indeterminate-progressbar-for-android/" target="_blank">Custom Indeterminate progressBar for android?</a>
2. <a href="http://www.coderzheaven.com/2012/05/12/build-custom-progressbar-android-part-2/" target="_blank">How to build a custom progressBar in android- Part 2?</a>

Here is another one with update text on top of the progressbar.

Here is how we start.

After creating a fresh project create a new java file and name it "TextProgressBar.java".

Now copy this code to the above file.
This file extends the progressbar to add additional functionality.

[java]
package com.coderzheaven.pack;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.widget.ProgressBar;

public class TextProgressBar extends ProgressBar {
private String text;
private Paint textPaint;

public TextProgressBar(Context context) {
super(context);
text = "0/100";
textPaint = new Paint();
textPaint.setColor(Color.BLACK);
}

public TextProgressBar(Context context, AttributeSet attrs) {
super(context, attrs);
text = "0/100";
textPaint = new Paint();
textPaint.setColor(Color.BLACK);
}

public TextProgressBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
text = "0/100";
textPaint = new Paint();
textPaint.setColor(Color.BLACK);
}

@Override
protected synchronized void onDraw(Canvas canvas) {
super.onDraw(canvas);
Rect bounds = new Rect();
textPaint.getTextBounds(text, 0, text.length(), bounds);
int x = getWidth() / 2 - bounds.centerX();
int y = getHeight() / 2 - bounds.centerY();
canvas.drawText(text, x, y, textPaint);
}

public synchronized void setText(String text) {
this.text = text;
drawableStateChanged();
}

public void setTextColor(int color) {
textPaint.setColor(color);
drawableStateChanged();
}
}
[/java]

OK the progressbar class is now complete.

Samsung Galaxy S III India launch in June first week

2012-05-14T10:36:00.002-07:00

Samsung is expected to launch its all new Galaxy S III smartphone in India in the first week of June. According to NDTV Gadgets, India is in the first list of countries to get smartphone, which will see the launch starting May 29.

The smartphone will be priced at INR 38,000, while the street price is likely to be in the vicinity of INR 34,000.

How to build a custom progressBar in android- Part 2?

2012-05-12T10:46:00.002-07:00

Hello all.......

Today I am going to show you how to create a custom progressbar in android.
Previously in another posts I have already shown <a href="http://www.coderzheaven.com/?p=2689" target="_blank">how to build a custom indeterminate progressbar in android.</a>
And in this post I will show you how to customize the horizontal progressbar.

See the complete post here....
http://www.coderzheaven.com/2012/05/12/build-custom-progressbar-android-part-2/

Custom Indeterminate progressBar for android?

2012-05-12T10:43:00.000-07:00

Hello everyone...

Today we will see how to customize an indeterminate progressBar in android.
<strong>For that we have to create an xml with a progress animation.For this I used these three images</strong>

Continue from here.....
http://www.coderzheaven.com/2012/03/29/custom-indeterminate-progressbar-for-android/