ios - 在不中断双击缩放的情况下单击 MKMapView

Question

当用户在 map 上单击时，我想在我的 MKMapView 上放置一个图钉。我有密码工作，我有单击工作，但当我双击缩放时，我先单击一下。这是我获取识别器设置的代码:

    self.doubleTap = [[UITapGestureRecognizer alloc]
                      initWithTarget:self action:@selector(handleDoubleTap:)];
    self.doubleTap.numberOfTapsRequired = 2;
    self.doubleTap.numberOfTouchesRequired = 1;
    [mapView_ addGestureRecognizer:doubleTap_];

    self.singleTap = [[UITapGestureRecognizer alloc]
                      initWithTarget:self action:@selector(handleGesture:)];
    self.singleTap.numberOfTapsRequired = 1;
    self.singleTap.numberOfTouchesRequired = 1;
    [self.singleTap requireGestureRecognizerToFail: doubleTap_];
    [mapView_ addGestureRecognizer:singleTap_];

现在，这并不奇怪，引用 Apple 的话:

Note: In the case of the single-tap versus double-tap gestures, if a single-tap gesture recognizer doesn’t require the double-tap recognizer to fail, you should expect to receive your single-tap actions before your double-tap actions, even in the case of a double tap. This is expected and desirable behavior because the best user experience generally involves stackable actions.

所以我将 requireGestureRecognizerToFail 添加到我的单击识别器中。

[singleTap requireGestureRecognizerToFail: doubleTap];

这确保我的单击识别器不会得到双击。

但是……

现在我的双击识别器得到了双击，而 MKMapView 没有得到它们。我已经尝试在识别器中将 cancelsTouchesInView 设置为 NO，但这也没有帮助。

所以我需要一种方法来防止我的单击识别器获得双击(这似乎不太可能)或将我的双击事件发送到我的 mapView。

Answer 1

在 iOS 8 上完美运行，双击操作无效

  - (void)viewDidLoad 
    {
        [super viewDidLoad];

        UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:nil];
        doubleTap.numberOfTapsRequired = 2;
        doubleTap.numberOfTouchesRequired = 1;
        [self.mapView addGestureRecognizer:doubleTap];

        UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleGesture:)];
        singleTap.numberOfTapsRequired = 1;
        singleTap.numberOfTouchesRequired = 1;
        [singleTap requireGestureRecognizerToFail: doubleTap];
        [self.mapView addGestureRecognizer:singleTap];
     }

   - (void)handleGesture:(UIGestureRecognizer *)gestureRecognizer
     {
            if (gestureRecognizer.state != UIGestureRecognizerStateEnded)
                return;
            //Do your work ...
     }