iOS UITapGestureRecognizer区分单击和双击

//添加单击手势监听

    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapGesture:)];

    [singleTap setNumberOfTapsRequired:1];

    [self addGestureRecognizer:singleTap];

    

    

    self.maximumZoomScale = 4.0;

    

    //添加双击手势监听

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

    [doubleTap setNumberOfTapsRequired:2];

    [self addGestureRecognizer:doubleTap];

    

    [singleTap requireGestureRecognizerToFail:doubleTap];  //加入这一行就不会出现这个问题