iOS开发之引用百度地图SDK（一）-----------SDK开发指南

(void)viewWillAppear:(BOOL)animated { [_mapView viewWillAppear]; _mapView.delegate = self; // 此处记得不用的时候需要置nil，否则影响内存的释放 } -(void)viewWillDisappear:(BOOL)animated { [_mapView viewWillDisappear]; _mapVi

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