//百度地图删除地图上所有的标注和所有的覆盖物
NSArray* array = [NSArrayarrayWithArray:_mapView.annotations];
[_mapViewremoveAnnotations:array];
array = [NSArrayarrayWithArray:_mapView.overlays];
[_mapViewremoveOverlays:array];
//百度地图删除地图上所有的标注和所有的覆盖物
NSArray* array = [NSArrayarrayWithArray:_mapView.annotations];
[_mapViewremoveAnnotations:array];
array = [NSArrayarrayWithArray:_mapView.overlays];
[_mapViewremoveOverlays:array];
转载于:https://www.cnblogs.com/ygm900/archive/2013/05/22/3093915.html