是否可以在MKMapView上为用户位置图钉设置固定的屏幕位置? [英] Is it possible to set a fixed on-screen position for the User Location Pin on MKMapView?

问题描述

我正在尝试设置 MKMapView ，以使用户的位置始终在视图控制器的右上角偏移，并且我将围绕其余UI进行构建那个块".

I'm trying to set up a MKMapView in a way that the user's location would always be offset in the top right corner of the view controller, and I would build the rest of my UI around that "block".

是否有一种方法可以设置 MKMapView 的固定/偏移中心点，例如，使插针始终位于屏幕的x，y位置?

Is there a way to set a fixed/offset center point for the MKMapView for example in a way that the pin is always at an x, y position on the screen?

如果您在理解我的目标时遇到困难，我可以提供一个草绘的示例.

I can provide a sketched example if you are having trouble understanding my goal.

推荐答案

我刚刚知道了，

func mapView(mapView: MKMapView!, didUpdateUserLocation userLocation: MKUserLocation!) {
    // Define a span (for zoom)
    let span: MKCoordinateSpan = MKCoordinateSpan(latitudeDelta: 0.005, longitudeDelta: 0.005)

    // Get user location
    let location = CLLocationCoordinate2D(
      latitude: userLocation.coordinate.latitude,
      longitude: userLocation.coordinate.longitude
    )

    // Get the close region for the user's location
    // This zooms into the user's tracked location
    let region = MKCoordinateRegion(center: location, span: span)
    let adjusted = mapView.regionThatFits(region)
    mapView.setRegion(adjusted, animated: true)

    // Here we set the offset of the map to be 75% to the right
    // and 15% from the top. Gives us a nice top right view.
    var rect = mapView.visibleMapRect
    let point = MKMapPointForCoordinate(location)
    rect.origin.x = point.x - rect.size.width * 0.75
    rect.origin.y = point.y - rect.size.height * 0.15
    mapView.setVisibleMapRect(rect, animated: true)
}

Pablo A.的回答是一个很好的起点，但可悲的是，这还不足以满足我的要求.

Pablo A.'s answer was a good starting point, but sadly it wasn't enough to do what I was looking for.

我继续在地图视图的顶部添加了蒙版视图，以更好地可视化最终要使用哪种UI.

I went ahead and added a mask view on top of the map view as well to better visualize what kind of UI I was going for in the end.

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