Stupid, simple, Android view dragging

gistfile1.txt

public class SelectionHandleListener implements View.OnTouchListener {
        float x, y;
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            float rx = motionEvent.getRawX();
            float ry = motionEvent.getRawY();
            switch(motionEvent.getAction()) {
                case MotionEvent.ACTION_DOWN:
                case MotionEvent.ACTION_POINTER_DOWN:
                    x = rx;
                    y = ry;
                    break;
            }
            float dx = rx - x;
            float dy = ry - y;
            view.setX(view.getX() + dx);
            view.setY(view.getY() + dy);
            x = rx;
            y = ry;
            return true;
        }
    }