BMFOfflineCityRecord constructor
- {int cityID,
 - int dataSize,
 - String cityName,
 - int cityType,
 - List<
BMFOfflineCityRecord> childCities} 
BMFOfflineCityRecord构造方法
Implementation
BMFOfflineCityRecord(
    {this.cityID,
    this.dataSize,
    this.cityName,
    this.cityType,
    this.childCities});