用于UILabel问题的UITapGesture选择器

Question

我为self.view和UILabel（mainView的子视图）添加了tapGesture，每个都执行不同的选择器。

但是唯一的主要观点是tapGesture被调用并且标签tapgesture没有被调用。如何处理？

以下是代码：

UITapGestureRecognizer  *tapGesForSelf = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesForSelf:)];
[self.view addGestureRecognizer:tapGesForSelf];


UITapGestureRecognizer *tapLblClick = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesForLbl:)];
[lbl addGestureRecognizer:tapLblClick];

对于两个选择器，只有一个方法称为tapGesForSelf。 这里lbl是self.view的子视图。

Answer 1

试试这个

- (void)viewDidLoad {
    [super viewDidLoad];
    [_lbl setUserInteractionEnabled:YES];
    UITapGestureRecognizer  *tapGesForSelf = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesForSelf:)];
    [self.view addGestureRecognizer:tapGesForSelf];
    UITapGestureRecognizer *tapLblClick = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesForLbl:)];
    [_lbl addGestureRecognizer:tapLblClick];
    [tapGesForSelf requireGestureRecognizerToFail:tapLblClick];
}
- (void)tapGesForSelf:(UITapGestureRecognizer *)gesture
{
    NSLog(@"self");
}
- (void)tapGesForLbl:(UITapGestureRecognizer *)gesture
{
    NSLog(@"label");
}

Answer 2

一旦我尝试了，它就会为你的问题发布答案，并且效果很好。

首先在设计中看到标签。我将标签文本设置为“Tap Me”

现在我设置了视图和标签的代码

- (void)viewDidLoad
{
  [super viewDidLoad];

  //TapGesture for Label
  UITapGestureRecognizer *tapLabel = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(actionTapLabel:)];
  tapLabel.delegate = self;
  tapLabel.numberOfTapsRequired = 1;
  lblTapMe.userInteractionEnabled = YES;
  [lblTapMe addGestureRecognizer:tapLabel];

  //TapGesture for View
  UITapGestureRecognizer *tapMainView = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(actionTapMainView:)];
  tapMainView.delegate = self;
  tapMainView.numberOfTapsRequired = 1;
  [self.view addGestureRecognizer:tapMainView];
}

//Action method for Label
-(void)actionTapLabel:(UITapGestureRecognizer *)gestureOnLabel{
    UILabel *label = (UILabel *)gestureOnLabel.view;
    NSLog(@"Lable text is - %@",label.text);
}

//Action method for View
-(void)actionTapMainView:(UITapGestureRecognizer *)gestureOnMainView{
    NSLog(@"The Main view is tapped");
}

输出截图

Answer 3

请设置UserUteractionEnabled：YES以交互TapGesture

[lbl setUserInteractionEnabled:YES];