返回来<null>数据

_province = useDic[@"PROVINCE_ID"];

_city = useDic[@"CITY_ID"];

_area = useDic[@"TOWN_ID"];

if ([_province isEqual:[NSNull null]]  ) {

self.ProvinceCityDis.text = @"";

}

if ([useDic[@"model.ADDRESS"] isEqual:[NSNull null]]) {

_detailAddress.text = @"";

}