java - Android 用两根手指点击 MapView

Question

在我的代码中，我想添加双击放大和双指点击缩小(如谷歌地图)。我正在使用这段代码:

gestureDetector = new GestureDetector(new DoubleTapDetector());
touchListener = new View.OnTouchListener() {
    public boolean onTouch(View view, MotionEvent motionEvent) {
        final int action = motionEvent.getAction();
        final int fingersCount = motionEvent.getPointerCount();

        if ((action == MotionEvent.ACTION_POINTER_UP) && (fingersCount == 2)) {
            onTwoFingersTap();

            return false;
        }

        return gestureDetector.onTouchEvent(motionEvent);
    }
};

双击工作正常，但是当我尝试捏合 map 时，它像往常一样缩放但缩小了一步，因为 onTwoFingersTap(); 也被捕获了。

我怎样才能避免这种情况？

Answer 1

如果条件满足则返回真:

    touchListener = new View.OnTouchListener() {    
    public boolean onTouch(View view, MotionEvent motionEvent) {    
        final int action = motionEvent.getAction();       
        final int fingersCount = motionEvent.getPointerCount();        
        if ((action == MotionEvent.ACTION_POINTER_UP) && (fingersCount == 2)) {             
            onTwoFingersTap();       
            return true;         
        } 
     return gestureDetector.onTouchEvent(motionEvent);     
    } 
 };