How to set image as wallpaper?(Android)

Today i am going to see about how to set a image as wallpaper in 2 line of code in android.
we can easily set any image from your res folder as a wallpaper in a 2 line of code.
First step is you need to change your image as Bitmap, then use getApplicationContext() to set your wallpaper.That's it!

import java.io.IOException;

import android.app.Activity;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

public class ExampleApp extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test);

ImageView imageView = (ImageView) findViewById(R.id.ImageView01);
imageView.setBackgroundResource(R.drawable.gall_2);

Button button = (Button) findViewById(R.id.Button01);
button.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Bitmap bitmap = BitmapFactory.decodeStream(getResources()
.openRawResource(R.drawable.gall_2));

try {
getApplicationContext().setWallpaper(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
});

}

}

test.xml

[sourcecode language="xml"]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical">
<Button android:id="@+id/Button01" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Set as Wallpaper"></Button>
<ImageView android:id="@+id/ImageView01"
android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageView>
</LinearLayout>

Add permission in AndroidManifest.xml

<uses-permission android:name="android.permission.SET_WALLPAPER" />