ios - 冲突的 UIPanGestureRecognizer（3 个手指）和 UIPinchGestureRecognizer

Question

我将 UIPanGestureRecognizer 和 UIPinchGestureRecognizer 添加到同一个视图中。这通常不会导致任何问题，但我的 UIPanGestureRecognizer 需要 3 个手指会导致问题：

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];

有时，应该在平移时调用捏合手势。它的工作时间约为 50%，但是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：我只希望一次发生一个手势。

Answer 1

将手势的代表设置为 self 并将您的 ViewController 设置为实现 UIGestureRecognizerDelegate

并添加此方法：

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

Answer 2

我认为其他帖子有错字，但使用这个

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

并添加它，以便其他手势在您要开始的手势之前失败

requireGestureRecognizerToFail