setMapRegionWillChangeWithReasonCallback method Null safety

void setMapRegionWillChangeWithReasonCallback(
  1. {required BMFMapRegionChangeReasonCallback callback}
)

设置地图区域即将改变时会调用接口

BMFMapRegionChangeReasonCallback callback 回调接口

Implementation

void setMapRegionWillChangeWithReasonCallback(
    {required BMFMapRegionChangeReasonCallback callback}) {
  _methodChannelHandler.setMapRegionWillChangeWithReasonCallback(callback);
}