onGetOfflineMapStateBack method Null safety

void onGetOfflineMapStateBack(
  1. {required BMFGetOfflineMapStateback callback}
)

返回通知事件

Implementation

void onGetOfflineMapStateBack({required BMFGetOfflineMapStateback callback}) {
  if (_bmfGetOfflineMapStateback != null || callback == null) {
    return;
  }
  this._bmfGetOfflineMapStateback = callback;
}