原生MapKit 库中，MKMapView 加载的mapView 在国内地图数据是高德地图 ，在国外加载的是苹果自研的地图
询问了苹果技术客服，给出的回复：
In China, the Apple Maps product uses the AutoNavi Maps Service.
In foreign, a logo with the text " Maps" is displayed
This is an internal framework implementation detail that I am unable to share, and your app should not depend on knowing this information
