iOS-TapGestureRecognizer-Tap适用于整个屏幕而不适用于视图

Question

在我的应用程序中，我有一个图像和一个UITextView 。
我已经为两个视图创建了一个UITapGestureRecognizer ，但是问题是，无论我在屏幕上单击什么位置，都只会执行与UITextView关联的方法。
即使单击图像，也只会执行与UITextView关联的UITapGestureRecognizer方法。

以下是我实现的代码：

UITapGestureRecognizer *tapGestureRecognizerImage = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                                            action:@selector(handleTapFromImage:)];
[infobutton addGestureRecognizer:tapGestureRecognizerImage];
[[self view] addGestureRecognizer:tapGestureRecognizerImage];

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                                       action:@selector(handleTapFrom:)];
[messageOne addGestureRecognizer:tapGestureRecognizer];
[[self view] addGestureRecognizer:tapGestureRecognizer];

//The following are the methods associated
- (void) handleTapFrom: (UITapGestureRecognizer *)recognizer {
    //Code to handle the gesture
    NSLog(@"I am in handleTapFrom method");
}

- (void) handleTapFromImage: (UITapGestureRecognizer *)recognizer {
    //Code to handle the gesture
    NSLog(@"I am in handleTapFrom Image method");
    [self.view makeToast:@"Your verification code does not match. Re-enter your verification code"];
}

我确定我在这里错过了一些东西。
据我所知，情节提要中的关联是正确的。

请纠正我我要去哪里了

谢谢你的时间

Answer 1

您不应该在self.view上添加手势。

它应该添加到您要为其识别点击事件的视图上。

Answer 2

您正在[self view]对象上设置了两个Tap Gesture Objects。
另外，让它imageObj的UIImageView对象应该具有userInteractionEnabled = YES 。

代替：

[[self view] addGestureRecognizer:tapGestureRecognizerImage];

你应该做：

[imageObj setUserInteractionEnabled:YES];
[imageObj addGestureRecognizer:tapGestureRecognizerImage];

---

通常，在要使用手势对象的对象上使用-addGestureRecognizer:
假设您有一个名为myTapGesture的UITapGestureRecognizer对象。

然后，使其工作...

1. 在UILabel *lblSomeObj ，它将是：
   • [lblSomeObj addGestureRecognizer:myTapGesture];
2. 在UIView *vwSomeObj ，它将是：
   • [vwSomeObj addGestureRecognizer:myTapGesture];
3. 等等...

Answer 3

您需要包括以下代码：

 [tapGestureRecognizerImage requireGestureRecognizerToFail:tapGestureRecognizer]; 
[imageObj addGestureRecognizer:tapGestureRecognizerImage];

Answer 4

只需将手势添加到各个视图中，而不要添加到self.view中。

 UITapGestureRecognizer *tapGestureRecognizerImage = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapFromImage:)];

[infobutton addGestureRecognizer:tapGestureRecognizerImage];

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapFrom:)];
[messageOne addGestureRecognizer:tapGestureRecognizer];

Answer 5

在UIImageView对象上添加手势，并确保将图像视图userInteractionEnabled设置为YES

imageObj.userInteractionEnabled = YES;
[imageObj addGestureRecognizer:tapGestureRecognizerImage];