冲突的UIPanGestureRecognizer（3个手指）和UIPinchGestureRecognizer

Question

我将UIPanGestureRecognizer和UIPinchGestureRecognizer都添加到相同的视图。这通常不会引起任何问题，但对于3个手指和我的UIPanGestureRecognizer要求导致的问题：

UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinched:)]; 
[self.view addGestureRecognizer:pinchGesture]; 

UIPanGestureRecognizer panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panning:)]; 
panGesture.minimumNumberOfTouches = 3; 
panGesture.maximumNumberOfTouches = 3; 
[self.view addGestureRecognizer:panGesture]; 

偶尔，出锅时应该已经缩放手势将被调用。它在大约50％的时间内工作，但在同一个视图上实现这两个手势的更好方法是什么，所以准确性更好？

编辑：我只想要一次发生一个手势。

Answer 1

设置手势代表自我和设置您的视图控制器来实现UIGestureRecognizerDelegate

并添加以下方法：

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

Answer 2

其他职位有一个错字，我认为，但使用此

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer 
{ 
    return NO; 
} 

并添加此项，以便其他手势在您要启动手势之前失败

requireGestureRecognizerToFail