制作平移手势需要所有4个滑动手势失败

Question

我为我的视图注册了所有4个滑动手势（向上，向下，向左和向右滑动）。我还想对同一个视图使用 Pan手势，但requireGestureRecognizerToFail允许我只指定其中一个 Swipe手势。

有没有办法做这样的事情：

[panGesture requireGestureRecognizersToFail: @[swipeUp, swipeDown, swipeLeft, swipeRight]];

谢谢。

Answer 1

首先，简要介绍一下这个link

如果我说得对，你想要平移手势，所以：

UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:myView 
                                                                             action:@selector(handlePan:)];

[myView addGestureRecognizer: panGesture];

然后，在handlePan:你应该：

- (void) handlePan:(UIPanGestureRecognizer *)panGestureRecognizer
{
    CGPoint translation = [uiPanGestureRecognizer translationInView:self.superview];
    myView.center = CGPointMake(lastLocation.x + translation.x,
                              lastLocation.y + translation.y);
}

Answer 2

您可以多次调用它：

[panGesture requireGestureRecognizerToFail:swipeUp];
[panGesture requireGestureRecognizerToFail:swipeDown];
[panGesture requireGestureRecognizerToFail:swipeLeft];
[panGesture requireGestureRecognizerToFail:swipeRight];