Question

我将UIPanGestureRecognizer和UIPinchGestureRecognizer添加到同一视图中。这通常不会导致任何问题，但使用我的UIPanGestureRecognizer对3个手指的要求会导致问题：

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];

有时候，应该在平底锅时调用捏手势。它可以在50％的时间内工作，但是在同一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并设置ViewController以实现UIGestureRecognizerDelegate

并添加此方法：

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

Answer 2

其他帖子我认为有错字，但请使用此

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

并添加此项，以便其他手势在您要开始的手势之前失败

requireGestureRecognizerToFail

冲突的UIPanGestureRecognizer（3指）和UIPinchGestureRecognizer

2 个答案: