单击手势和双击手势并存出现的问题

1. - (void)viewDidLoad   
2. {  
3.     // 单击的 Recognizer  
4.     UITapGestureRecognizer* singleRecognizer;  
5.     singleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:selfaction:@selector(SingleTap：)];  
6.     //点击的次数  
7.     singleTapRecognizer.numberOfTapsRequired = 1; // 单击  
8.   
9.     //给self.view添加一个手势监测；  
10.   
11.   [self.view addGestureRecognizer:singleRecognizer];  
12.   
13.     
14.     // 双击的 Recognizer  
15.     UITapGestureRecognizer* double;  
16.     doubleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:selfaction:@selector(DoubleTap：)];  
17.     doubleTapRecognizer.numberOfTapsRequired = 2; // 双击  
18.     //关键语句，给self.view添加一个手势监测；  
19.     [self.view addGestureRecognizer:doubleRecognizer];  
20.       
21.     // 关键在这一行，双击手势确定监测失败才会触发单击手势的相应操作  
22.     [singleRecognizer requireGestureRecognizerToFail:doubleRecognizer];  
23.     [singleRecognizer release];  
24.     [doubleRecognizer release];  
25. }  
26.   
27. -(void)SingleTap:(UITapGestureRecognizer*)recognizer  
28. {  
29. //处理单击操作  
30. }  
31.   
32. -(void)DoubleTap:(UITapGestureRecognizer*)recognizer  
33. {  
34. //处理双击操作  
35. }