查了一下CL采用WGS84坐标系，MapKit采用国内的GCJ02坐标系。。所以有误差。。有种转换的方法，但是转换出来之后还是有不小的误差。。
所以情况是：CL 有偏差 能后台MKMapView 准 但是不能后台
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Currently, Amap AMapLocation is used for positioning in China, which also uses the GCJ02 coordinate system. The disadvantage is that the key must be verified online.
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Currently, Amap AMapLocation is used for positioning in China, which also uses the GCJ02 coordinate system. The disadvantage is that the key must be verified online.