Detect the touch on screen silently

TouchService.java

package overlaytouch.eyal.fr.overlaytouch;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.Toast;

/**
 * Created by Eyal on 23/07/2014.
 */
public class TouchService extends Service {

    TouchView mView;

    @Override
    public void onCreate() {
        super.onCreate();

        mView = new TouchView(this);
        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                1,1,
                WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL|WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
                PixelFormat.TRANSLUCENT);
        params.gravity = Gravity.RIGHT | Gravity.TOP;
        WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
        wm.addView(mView, params);
    }

    public class TouchView extends View {

        public TouchView(Context context) {
            super(context);
        }

        @Override
        public boolean onTouchEvent(MotionEvent event) {

            Log.d("tag", "onTouchEvent" + event.getAction());
            return false;
        }
    }

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