UILabel 添加了滑动手势，但不起作用
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipedGesture:)];
swipe.direction = UISwipeGestureRecognizerDirectionRight;
swipe.numberOfTouchesRequired = 1;
[self.myLabel.superview addGestureRecognizer:swipe];
- (void)swipedGesture:(UIGestureRecognizer *)recognizer
{
NSLog(@"I swiped ;)");
}
所以，发生的事情是这样的：我有一个名为 myLabel 的标签。当我向右滑动时，它应该打印 NSLog I swiped，但什么也没有发生。原因是什么？我在这里做错了什么？有人可以帮我编辑我的代码以使其工作吗？
UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipedGesture:)];
swipe.direction = UISwipeGestureRecognizerDirectionRight;
swipe.numberOfTouchesRequired = 1;
[self.myLabel.superview addGestureRecognizer:swipe];
- (void)swipedGesture:(UIGestureRecognizer *)recognizer
{
NSLog(@"I swiped ;)");
}
So, this is what happens: I have a label called myLabel. and when I swipe right it should print the NSLog I swiped, but nothing happens. What's the reason? What have I done wrong here? Could someone help me edit my code to make this work ?
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评论（2）
您不需要将此滑动手势添加到
UILabel吗？您正在将其添加到该标签的超级视图中。将 -
[self.myLabel.superview addGestureRecognizer:swipe];更改为 -
[self.myLabel addGestureRecognizer:swipe];更新：同样作为 justin 点，请设置
对于标签，将 userInteractionEnabled更改为YES，如下所示 -[self.myLabel setUserInteractionEnabled:YES];Dont you need to add this swipe gesture to the
UILabel? you are adding it to the superview of that label.change -
[self.myLabel.superview addGestureRecognizer:swipe];to -
[self.myLabel addGestureRecognizer:swipe];UPDATE: Also as justin points, please set
userInteractionEnabledtoYESfor the label like so -[self.myLabel setUserInteractionEnabled:YES];除非您在标签上将
userInteractionEnabled设置为YES，否则手势识别器将无法工作。The gesture recognizer won't work unless you set
userInteractionEnabledtoYESon the label.