ios 如何在iphone中获取gmsmapview的坐标中心
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How to get coordinate center of gmsmapview in iphone
提问by imalice
I'm using the new Google Maps SDK for iOS
我正在使用适用于 iOS 的新 Google Maps SDK
Can I get the true coordinate form GMSMapView.center? Now it returns a value of CGPoint, but it's not the true coordinate.
我可以获得 GMSMapView.center 的真实坐标形式吗？现在它返回 CGPoint 的值，但它不是真正的坐标。
Thank and Regards.
谢谢和问候。
回答by Jing
Use the projectionmethod - (CLLocationCoordinate2D)coordinateForPoint:(CGPoint)pointof the mapview to convert a point in the map to the geological coordinates
使用mapview的projection方法- (CLLocationCoordinate2D)coordinateForPoint:(CGPoint)point将地图中的一个点转换为地质坐标
CGPoint point = mapView.center;
CLLocationCoordinate2D coor = [mapView.projection coordinateForPoint:point];
回答by Rex Lam
I suggest to use [yourMapView.camera target]instead of Jing's solution.
我建议使用[yourMapView.camera target]代替 Jing 的解决方案。
Jing's solution work fine on iOS 6, but maybe having issue on iOS 7/7.1,
the projection may report wrong coordinate (a bit downward shift) !
I have checked the map bounds and padding is correct, both result of [projection pointForCoordinate: coordinate]and [projection coordinateForPoint:point]can contrast to each other, no ideas where the problem is...
Jing 的解决方案在 iOS 6 上工作正常，但可能在 iOS 7/7.1 上有问题，投影可能会报告错误的坐标（有点向下移动）！我检查了地图边界和填充是正确的，两种结果[projection pointForCoordinate: coordinate]，并[projection coordinateForPoint:point]可以对比对方，没有观念问题出在哪里？
回答by Pablo Marrufo
Here is how to do it in Swift 4
这是如何做到的 Swift 4
let coordinate = mapView.projection.coordinate(for: mapView.center)
回答by Saxon Druce
Are you looking for mapView.camera.target? This is a CLLocationCoordinate2D.
你在找mapView.camera.target吗？这是一个CLLocationCoordinate2D.
