添加一個手勢識別到幾UIView的

Question

所以我有以下代碼：

UITapGestureRecognizer *showNewsStoryTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showNewsStory:)]; 
[self.storyImageView_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[self.storyTitleLabel_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[self.storyImageFailedLabel_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[self.storyImageFailedTextView_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[showNewsStoryTapGestureRecognizer release]; 

看來，對於一個UIView這隻作品，這是最後一個加入。換句話說UITapGestureRecognizer，它的觀點是一對一的關係。它是否正確？我該如何解決？我必須爲每個單獨創建一個UITapGestureRecog嗎？

Answer 1

是的，只能有一個UITapRecogniser一個UIView。儘管他們的行爲可能相同，但您必須針對不同的觀點採用不同的識別器。
另請參閱this鏈接。

Answer 2

試試這個，

UITapGestureRecognizer *showNewsStoryTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showNewsStory:)]; 

[self.storyImageView_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[showNewsStoryTapGestureRecognizer release]; 

showNewsStoryTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showNewsStory:)]; 
[self.storyTitleLabel_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[showNewsStoryTapGestureRecognizer release]; 

showNewsStoryTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showNewsStory:)]; 
[self.storyImageFailedLabel_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[showNewsStoryTapGestureRecognizer release]; 

showNewsStoryTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showNewsStory:)]; 
[self.storyImageFailedTextView_ addGestureRecognizer:showNewsStoryTapGestureRecognizer]; 
[showNewsStoryTapGestureRecognizer release]; 

Answer 3

我認爲您只需將手勢識別器添加到包含您的storyImageView,storyTitleLabel等視圖作爲其子視圖的視圖。

Answer 4

您可以使用此代碼將多個Same UITapGestureRecognizer添加到多個View中。

步驟是：

1. 首先，我們創建三個視圖與標籤
2. 然後我們創建NSMutableArray並添加該視圖陣列
3. 之後添加UITapGestureRecognizer查看
4. 在UITapGestureRecognizer方法我們檢查視圖標記來區分哪個視圖被點擊。

下面是步驟的代碼：

-(Void)viewDidLoad { 
    [super viewDidLoad]; 

    //First create three View 
    UIView *view1 = [[UIView alloc] initWithFrame: CGRectMake (5 , 171, 152, 152)];  
    view1.tag = 1; //add tag to view 
    view1.backgroundColor = [UIColor whiteColor]; 
    [self.view addSubview: view1]; 

    UIView * view2 = [[UIView alloc] initWithFrame: CGRectMake (163, 171, 152, 152)]; 
    view2.tag = 2; //add tag to view 
    view2.backgroundColor = [UIColor whiteColor]; 
    [self.view addSubview: view2]; 

    UIView * view3 = [[UIView alloc] initWithFrame: CGRectMake (5, 330, 152, 152)];  
    view2.tag = 3; //add tag to view 
    view2.backgroundColor = [UIColor whiteColor]; 
    [self.view addSubview: view2]; 

    //Now create mutable array to hold our view 
    NSMutableArray * ary=[[NSMutableArray alloc] init]; 
    [ary addObject:view1]; 
    [ary addObject:view2]; 
    [ary addObject:view3]; 


    //now we add tap gesture to view 
    for (UIView *view in ary) { 
     UITapGestureRecognizer * answerDoubleTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(answerDoubleTapped:)]; 
     answerDoubleTapGesture.numberOfTapsRequired = 2; 
     [answer4View addGestureRecognizer:answerDoubleTapGesture]; 
    } 
    } 

-(void)answerDoubleTapped:(UITapGestureRecognizer *)recognizer { 
    //Check which view is tapped 
    switch (recognizer.view.tag) { 
     case 1: 
     { 
      NSLog(@"First View Tapped"); 
      break; 
     }case 2: 
     { 
      NSLog(@"Second View Tapped"); 
      break; 
     }case 3: 
     { 
      NSLog(@"Third View Tapped"); 
      break; 
     }case 4: 
     { 
      NSLog(@"Forth View Tapped"); 
      break; 
     }default: 
     { 
      break; 
     } 
    } 
}