@property(nonatomic) NSUInteger numberOfTapsRequired@property(nonatomic) NSUInteger numberOfTouchesRequired

    // 单击的 Recognizer    UITapGestureRecognizer* singleRecognizer;    singleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:selfaction:@selector(SingleTap：)];    //点击的次数    singleRecognizer.numberOfTapsRequired = 1; // 单击    [self.view addGestureRecognizer:singleRecognizer];        // 双击的 Recognizer    UITapGestureRecognizer* doubleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:selfaction:@selector(DoubleTap：)];    doubleRecognizer.numberOfTapsRequired = 2; // 双击    //关键语句，给self.view添加一个手势监测；    [self.view addGestureRecognizer:doubleRecognizer];        // 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    [singleRecognizer requireGestureRecognizerToFail:doubleRecognizer];    [singleRecognizer release];    [doubleRecognizer release];