Set theme of AdActivity to @android:style/Theme.Translucent

// //www.apache.org/licenses/LICENSE-2.0
// The Android Open Source Project
public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));
	}

	private static class SampleView extends View {
		private Paint mPaint = new Paint();
		private Path mPath = new Path();

		// CONSTRUCTOR
		public SampleView(Context context) {
			super(context);
			setFocusable(true);

			// Construct a wedge-shaped path
			mPath.moveTo(0, -60);
			mPath.lineTo(-20, 80);
			mPath.lineTo(0, 60);
			mPath.lineTo(20, 80);
			mPath.close();
		}

		@Override
		protected void onDraw(Canvas canvas) {
			Paint paint = mPaint;

			canvas.drawColor(Color.WHITE);

			paint.setAntiAlias(true);
			paint.setColor(Color.RED);
			paint.setStyle(Paint.Style.FILL);
			Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),
					R.drawable.flower_blue);
			canvas.drawBitmap(bitmapOrg, 10, 10, paint);
			int w = canvas.getWidth();
			int h = canvas.getHeight();
			int cx = w / 2;
			int cy = h / 2;

			canvas.translate(cx, cy);
         // uncomment next line 
			//canvas.rotate(90.0f);
			canvas.drawPath(mPath, mPaint);
		}

	}
}

private int _nVersionCode = 0;	
private boolean _bNewVersion = false;


// onCreate
     	 _nVersionCode   = this.getPackageManager()
     	.getPackageInfo(this.getPackageName(), 0).versionCode;
     	Log.d(String.valueOf(_nVersionCode), "versionCode");

// onStart loadPreferences
 public void loadPreferences() {
			//SharedPreferences settings = getSharedPreferences(F.PREFERENCES_NAME, 0);
			SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
		int nOldVersionCode =	settings.getInt("_nVersionCode",  0);// old vesion
		if(_nVersionCode > nOldVersionCode)
			_bNewVersion = true;
	}

// onDestroy savePreferences	
	public void savePreferences() {
			SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
			SharedPreferences.Editor editor = settings.edit();
			editor.putInt("_nVersionCode", _nVersionCode); // save current version code
			editor.commit();
	}

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
         requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);
    }

<activity android:name=".ActivityName"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
</activity>

public class ApokusActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));
	}

	private static class SampleView extends View {

		// CONSTRUCTOR
		public SampleView(Context context) {
			super(context);
			setFocusable(true);

		}

		@Override
		protected void onDraw(Canvas canvas) {
			Paint paint = new Paint();

			canvas.drawColor(Color.YELLOW);


			// you need to insert a image flower_blue into res/drawable folder
			paint.setFilterBitmap(true);
			Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),
					R.drawable.flower_blue);

			Bitmap croppedBmp = Bitmap.createBitmap(bitmapOrg, 0, 0,
					bitmapOrg.getWidth() / 2, bitmapOrg.getHeight());
			int h = bitmapOrg.getHeight();
			canvas.drawBitmap(bitmapOrg, 10, 10, paint);
			canvas.drawBitmap(croppedBmp, 10, 10 + h + 10, paint);

		}

	}
}