Ios UITapGestureRecognizer 单击和双击

我正在try 向视图添加2 UITapGestureRecognizers个，一个用于单击，另一个用于双击事件.单击识别器工作正常(自行).但我好像不能让双击识别器工作.

已经try 过cancelsTouchesInView、delaysTouchesBegan和delaysTouchesEnded这样的属性，但仍然不起作用.

当我双击时，单击识别器将始终处于激活状态，双击事件也会发送到超级视图.但自定义双击识别器似乎根本没有收到通知.

文件似乎表明，上面提到的3个属性可以用于此目的.但我只是不确定应该设置什么值，以及在哪个识别器(单识别器、双识别器或两个识别器)上设置.希望熟悉这个的人能帮上忙.

以下是挡路的最新更新代码.

// ****** gesture recognizers ******

- (void)addSingleAndDoubleTapGestureRecognizersToView:(UIView *)view
{
    // single tap    
    UITapGestureRecognizer *singleTapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget: tableViewController action: @selector(handleSingleTapOnView:)];                                 
    [singleTapRecognizer setNumberOfTouchesRequired:1];
    [view addGestureRecognizer: singleTapRecognizer];

    // double tap 
    UITapGestureRecognizer *doubleTapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget: tableViewController action: @selector (handleDoubleTapOnView:)];        
    [doubleTapRecognizer setNumberOfTouchesRequired:2];         
    [singleTapRecognizer requireGestureRecognizerToFail: doubleTapRecognizer];
    [view addGestureRecognizer: doubleTapRecognizer];         
}

- (void)handleSingleTapOnView:(id)sender
{

}

- (void)handleDoubleTapOnView:(id)sender
{

}