的touchesBegan取消UISwipeGestureRecognizer

Question

我有一個大致的touchesBegan在我的ViewController

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

這似乎取消UISwipeGestureRecognizer。 （未解僱）

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]; 

任何想法？ :)

Answer 1

touchesBegan::在任何手勢識別器之前被調用，並且確實會覆蓋它們。

如果您希望同時支持在相同視圖上輕擊和輕掃，可以使用UITapGestureRecognizer並調用requireGestureRecognizerToFail。

所以，以下內容添加到您的代碼示例的底部：

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