在不移动 MKMapView 的情况下使用 UIScreenEdgePanGestureRecognizer

Question

我有一个包含 MKMapView 的 UIViewController（实际上，它包含一个包含 MKMapView 的全屏容器，但它应该没有任何影响）

我实现了一个 UIScreenEdgePanGestureRecognizer（显示抽屉），如下所示：

self.swipeRight = [[UIScreenEdgePanGestureRecognizer alloc] initWithTarget:self action:@selector(handleEdgeGesture:)];
[self.swipeRight setEdges:UIRectEdgeLeft];
[self.swipeRight setDelegate:self];
[self.view addGestureRecognizer:self.swipeRight];

为了让它工作，我必须添加以下方法（返回 YES）：

(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer;

但是地图在抽屉出现的同时也在移动！ 我尝试了各种技巧来阻止它，但无法...（例如，我尝试了shouldBeRequiredToFailByGestureRecognizer或requireGestureRecognizerToFail）

知道当手势是来自 LeftEdge 的 ScreenEdgePan 时如何防止 MapView 移动吗？

Answer 1

我在我的应用中做了以下事情：

UIScreenEdgePanGestureRecognizer *popRecognizer = [[UIScreenEdgePanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePopRecognizer:)];
popRecognizer.edges = UIRectEdgeLeft;
popRecognizer.delegate = self;

然后按照你说的将delegate设置为YES

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

并像这样启用/禁用地图视图的滚动

- (void)handlePopRecognizer:(UIScreenEdgePanGestureRecognizer*)recognizer
{
    if(recognizer.state == UIGestureRecognizerStateBegan){
        _mapView.scrollEnabled = NO;
    } else if(recognizer.state == UIGestureRecognizerStateEnded || recognizer.state == UIGestureRecognizerStateCancelled){
        _mapView.scrollEnabled = YES;

    }
}

希望对你有帮助。

Answer 2

地图上的平移手势需要在UIScreenEdgePanGestureRecognizer 开始识别后立即取消。为了达到这个目的，将scrollEnabled 设置为NO 就足够了。这将取消其他手势识别器。

- (void) handleEdgeGesture:(UIScreenEdgePanGestureRecognizer*)recognizer
{
    if(recognizer.state == UIGestureRecognizerStateBegan) {
        // cancel simultaneous gesture on map view
        _mapView.scrollEnabled = NO;
        _mapView.scrollEnabled = YES;
    }
}

Answer 3

以下组合对我有用，而无需触及地图视图。

// This is to ensure UIScreenEdgePanGestureRecognizer won't be blocked by other gestures. 
// You may need to do some logic checking before returning YES.
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
  return YES;
}
// This is to prevent other recognisers when UIScreenEdgePanGestureRecognizer
// is recognising the gesture. Again, you may want to do some logic checking
// before returning to YES.
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{

  return YES;
}

Answer 4

- (void) handleEdgeGesture:(UIScreenEdgePanGestureRecognizer*)recognizer : (id)sender
{
    if(recognizer.state == UIGestureRecognizerStateBegan && sender == GMSMapView) {
        // cancel simultaneous gesture on map view
        _mapView.isUserInteractionEnabled = NO;
    }
}

Answer 5

我认为最快的解决方案是在 mapView 之上制作一个薄视图（具有透明背景颜色），您的手势不应该在 mapView 上起作用。 IE。