onLongPress没有按预期工作

Question

我正在使用以下代码实现手势检测的表面视图。

surfaceview.setOnTouchListener(new OnSwipeTouchListener(this ) {

    });


  public class OnSwipeTouchListener implements OnTouchListener {

    private final GestureDetector gestureDetector;

    public OnSwipeTouchListener(Context ctx) {
        gestureDetector = new GestureDetector(ctx, new GestureListener());
    }

    public boolean onTouch(final View view, final MotionEvent motionEvent) {
        return gestureDetector.onTouchEvent(motionEvent);
    }

    private final class GestureListener extends SimpleOnGestureListener {

        private static final int SWIPE_THRESHOLD = 100;
        private static final int SWIPE_VELOCITY_THRESHOLD = 100;

        @Override
        public boolean onDown(MotionEvent e) {
            //Toast.makeText(getApplicationContext(),"On Down press", Toast.LENGTH_SHORT).show();

            return true;
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            boolean result = false;



            return result;
        }

        @Override
        public void onLongPress(MotionEvent arg0) {
            // TODO Auto-generated method stub

            Log.d("g","g");


                Toast.makeText(getApplicationContext(),"On long press", Toast.LENGTH_SHORT).show();
                Log.d("h","h");



        }

        @Override
        public boolean onScroll(MotionEvent arg0, MotionEvent arg1,
                float arg2, float arg3) {
            // TODO Auto-generated method stub
            return false;
        }

        @Override
        public void onShowPress(MotionEvent arg0) {
            // TODO Auto-generated method stub
            //Toast.makeText(getApplicationContext(),"On Show press", Toast.LENGTH_SHORT).show();

        }

        @Override
        public boolean onSingleTapUp(MotionEvent arg0) {
            // TODO Auto-generated method stub

            return false;
        }


        @Override
        public boolean onDoubleTap(MotionEvent arg0) {

            return true;
        }
    }


}

我想在用户触摸屏幕后执行操作并在那里保留一段时间。我认为这样的行动应该进入onLongPress方法。然而，当用户在第一次敲击之后，即在第二次敲击时长按时，启动方法内的吐司。这是这个方法应该如何工作还是我犯了一些错误？