同时手势iOS无法按预期工作

Question

我正在尝试同时双指左滑动和双指右滑动。

在我的viewDidLoad中，我按如下方式初始化手势：

swipeRecognizerL= [[UISwipeGestureRecognizer alloc]
                       initWithTarget:self action:@selector(handleSwipeL)];
swipeRecognizerL.direction=UISwipeGestureRecognizerDirectionLeft;
swipeRecognizerL.numberOfTouchesRequired=2;
swipeRecognizerL.delegate = self;


swipeRecognizerR= [[UISwipeGestureRecognizer alloc]
                       initWithTarget:self action:@selector(handleSwipeR)];
swipeRecognizerR.direction=UISwipeGestureRecognizerDirectionRight;
swipeRecognizerR.numberOfTouchesRequired=2;
swipeRecognizerR.delegate = self;

然后我将识别器添加到AVPlayerViewController;

AVPlayerViewController *controller = [[AVPlayerViewController alloc]init];
[controller.view.subviews[0] addGestureRecognizer:swipeRecognizerR];
[controller.view.subviews[0] addGestureRecognizer:swipeRecognizerL];

委托方法如下所示：

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{
    return YES;
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{

    NSLog(@"This one:%@,  theOtherOne:%@", gestureRecognizer, otherGestureRecognizer);
    return YES;
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
    return YES;
}

现在，单个双指滑动被识别为OK，但是当我进行双指双指滑动（一个左手，一个右手）时，不知何故，它似​​乎被解释为捏手势，根据登录< em> shouldRecognizeSimultaneouslyWithGestureRecognizer ：

  

这一个：; target =＆lt;（action = handleSwipeR，   目标=）取代; numberOfTouchesRequired = 2;   direction = right＆gt ;,OtherOne：;目标=   ＆lt;（action = _handlePinchGesture：，target =）＆gt;＆gt;

任何线索我做错了什么？如果您需要其他信息，请与我们联系。