iOS-TapGestureRecognizer-Tap適用於整個屏幕而不適用於視圖

Question

在我的應用程序中，我有一個圖像和一個UITextView 。
我已經為兩個視圖創建了一個UITapGestureRecognizer ，但是問題是，無論我在屏幕上單擊什么位置，都只會執行與UITextView關聯的方法。
即使單擊圖像，也只會執行與UITextView關聯的UITapGestureRecognizer方法。

以下是我實現的代碼：

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"];
}

我確定我在這里錯過了一些東西。
據我所知，情節提要中的關聯是正確的。

請糾正我我要去哪里了

謝謝你的時間

Answer 1

您不應該在self.view上添加手勢。

它應該添加到您要為其識別點擊事件的視圖上。

Answer 2

您正在[self view]對象上設置了兩個Tap Gesture Objects。
另外，讓它imageObj的UIImageView對象應該具有userInteractionEnabled = YES 。

代替：

[[self view] addGestureRecognizer:tapGestureRecognizerImage];

你應該做：

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

---

通常，在要使用手勢對象的對象上使用-addGestureRecognizer:
假設您有一個名為myTapGesture的UITapGestureRecognizer對象。

然后，使其工作...

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

Answer 3

您需要包括以下代碼：

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

Answer 4

只需將手勢添加到各個視圖中，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對象上添加手勢，並確保將圖像視圖userInteractionEnabled設置為YES

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