滑动方法被调用两次

我必须在我的视图控制器中使用滑动功能。因此，无论何时Iam滑动，我的滑动方法都会被调用两次，而且我在（swipe :)方法中写入的NSlogs正在显示内容两次。滑动方法被调用两次

这是我使用的代码。

UIView *swipeView=[[UIView alloc]initWithFrame:CGRectMake(405, 420, 265, 35)]; 
    swipeView.backgroundColor=[UIColor clearColor]; 
    [self.view addSubview:swipeView]; 
    UISwipeGestureRecognizer *gesture; 
    gesture=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipe:)]; 
    [gesture setDirection:(UISwipeGestureRecognizerDirectionRight)]; 
    [swipeView addGestureRecognizer:gesture]; 
    [gesture release]; 
    [swipeView release]; 


-(void)swipe:(UISwipeGestureRecognizer *)recognizer { 
    NSLog(@"Swipe received."); 
    NSLog(@"HIJ"); 
}

请告诉我，我只需要调用一次就可以做什么。

来源

2011-09-02 ferry

这就是应该发生的事情。你需要看看state属性，你会发现像UIGestureRecognizerStateBegan和UIGestureRecognizerStateEnded。

来源

2011-09-02 09:29:07

试试这个，识别有各种状态像

UIGestureRecognizerStatePossible, 
UIGestureRecognizerStateBegan, 
UIGestureRecognizerStateChanged, 
UIGestureRecognizerStateEnded, 
UIGestureRecognizerStateCancelled, 
UIGestureRecognizerStateFailed, 
UIGestureRecognizerStateRecognized = UIGestureRecognizerStateEnded 




-(void)swipe:(UISwipeGestureRecognizer *)recognizer { 


    if (recognizer.state == UIGestureRecognizerStateEnded) { 


     NSLog(@"Swipe received."); 
     NSLog(@"HIJ"); 

    } 
}

来源

2011-09-02 09:53:48

滑动方法被调用两次

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