I want to animate an ImageView inside a WindowManager. But it is not working.
Please find my code below. Here you can see I get a window manager system service and added an imageview. Now I am trying to rotate after adding the imageview inside window manager.

It works fine inside an activity.

```

    public class FloatingImageAnimationService extends Service {

        private WindowManager windowManager;
        private static ImageView chatHead;

        @Override
        public IBinder onBind(Intent arg0) {
            // TODO Auto-generated method stub
            return null;
        }
     @Override 
         public void onCreate() {
             super.onCreate();
             windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

             chatHead = new ImageView(this);

             chatHead.setImageResource(R.drawable.image_small);

             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);

             RotateAnimation ra = new RotateAnimation(
                    0, 
                    -80,
                    Animation.RELATIVE_TO_SELF, 0.5f, 
                    Animation.RELATIVE_TO_SELF,
                    0.5f);

            // how long the animation will take place
            ra.setDuration(210);

            // set the animation after the end of the reservation status
            ra.setFillAfter(true);
            // Start the animation
            chatHead.startAnimation(ra);
         }
    }

```

Please let me know what additional steps I need to do to make it work.

Thanks you,

Bikash