public class PointerService extends Service {
    private ImageView cursor;
    private CountDownTimer timer;
    private WindowManager.LayoutParams params;

    public void Update(final int x, final int y) {
        Log.d("PointerService", "Updating cursor position. X = " + Integer.toString(x) +
                "nY = " + Integer.toString(y));
        //Packet received => timer reset
        cursor.setVisibility(View.VISIBLE);
        cursor.setX(x);
        cursor.setY(y);
        cursor.postInvalidate();
        timer.cancel();
        timer.start();
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        Log.d("PointerService", "Creating service");

        cursor = new ImageView(this);
        cursor.setImageResource(R.drawable.ic_cursor);
        cursor.setVisibility(View.INVISIBLE);
        params = new WindowManager.LayoutParams(
                64, 64,
                WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
                        WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE |
                        WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN |
                        WindowManager.LayoutParams.FLAG_SECURE,
                PixelFormat.TRANSPARENT);
        params.setTitle("Cursor");
        params.gravity = Gravity.TOP | Gravity.LEFT;
        WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
        wm.addView(cursor, params);

        timer = new CountDownTimer(5000, 5000) {
            @Override public void onTick(long l) {}
            @Override public void onFinish() {
                cursor.setVisibility(View.INVISIBLE);
                cursor.postInvalidate();
            }
        };
        timer.start();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d("CursorService", "Service destroyed");
        Singleton.getInstance().pointerService = null;
        if(cursor != null) {
            ((WindowManager) getSystemService(WINDOW_SERVICE)).removeView(cursor);
            cursor = null;
        }
    }
}