Chat Heads Facebook

• Service, which will work on background also support drag drop your image.

public class ChatHeadService extends Service {

 private WindowManager windowManager;

 private ImageViewRounded chatHead;

 @Override public IBinder onBind(Intent intent) {

   // Not used

   return null;

 }

 @Override public void onCreate() {

   super.onCreate();

   windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

   chatHead = new ImageViewRounded(this);

   chatHead.setImageResource(R.drawable.lollipop);

   final WindowManager.LayoutParams params = new WindowManager.LayoutParams(

       WindowManager.LayoutParams.WRAP_CONTENT,

       WindowManager.LayoutParams.WRAP_CONTENT,

       WindowManager.LayoutParams.TYPE_PHONE,

       WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,

       PixelFormat.TRANSLUCENT);

   params.gravity = Gravity.TOP | Gravity.LEFT;

   params.x = 0;

   params.y = 100;

   windowManager.addView(chatHead, params);

   

   

   

   chatHead.setOnTouchListener(new View.OnTouchListener() {

 private int initialX;

 private int initialY;

 private float initialTouchX;

 private float initialTouchY;

 @Override public boolean onTouch(View v, MotionEvent event) {

   switch (event.getAction()) {

     case MotionEvent.ACTION_DOWN:

       initialX = params.x;

       initialY = params.y;

       initialTouchX = event.getRawX();

       initialTouchY = event.getRawY();

       return true;

     case MotionEvent.ACTION_UP:

       return true;

     case MotionEvent.ACTION_MOVE:

       params.x = initialX + (int) (event.getRawX() - initialTouchX);

       params.y = initialY + (int) (event.getRawY() - initialTouchY);

       windowManager.updateViewLayout(chatHead, params);

       return true;

   }

   return false;

 }

 

 });

   

 }

 @Override

 public void onDestroy() {

   super.onDestroy();

   if (chatHead != null) windowManager.removeView(chatHead);

 }

}

• Start the service where you want to call it.

startService(new Intent(ChatFBNotification.this, ChatHeadService.class));

• But Don't forget to give permission in AndroidManifest.xml file

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