touchesBegan取消UISwipeGestureRecognizer

Question

我的视图控制器中有一个通用的touchesBegan。

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    NSLog(@"--[%s:%d]",__PRETTY_FUNCTION__,__LINE__);
}

这似乎取消了UISwipeGestureRecognizer。(未被解雇)

   UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)];
   UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)];
        [swipeLeft setDirection:UISwipeGestureRecognizerDirectionLeft];
    [swipeRight setDirection:UISwipeGestureRecognizerDirectionRight];
    swipeRight.numberOfTouchesRequired=1;

    swipeLeft.cancelsTouchesInView=NO;
    swipeRight.cancelsTouchesInView=NO;
swipeLeft.delaysTouchesBegan = YES;
    swipeRight.delaysTouchesBegan = YES;

    self.viewSwipe.userInteractionEnabled=YES;
    [self.viewSwipe addGestureRecognizer:swipeLeft];
    [self.viewSwipe addGestureRecognizer:swipeRight];

有什么想法吗？:)

Answer 1

touchesBegan::在任何手势识别器之前被调用，并且确实会覆盖它们。

如果您希望在同一视图上同时支持轻击和滑动，您可以使用UITapGestureRecognizer，并调用requireGestureRecognizerToFail。

因此，将以下代码添加到代码示例的底部：

UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] init];
tapRecognizer.numberOfTapsRequired = 1;
[tapRecognizer requireGestureRecognizerToFail swipeLeft];
[tapRecognizer requireGestureRecognizerToFail swipeRight];