参数类型“映射动态动态”不能分配给参数类型“映射字符串动态”

Question

我在我的ApiRepository 课程中使用dio。但是这一行显示错误

 _dio.get(this.url, queryParameters: this.payload).then((response) {...

参数类型'map dynamic dynamic'不能分配给参数类型'map string dynamic'

全班

class ApiRepository {

  final String url;
  
  final Map payload;

  ApiRepository(this.url, this.payload);

  final Dio _dio = Dio();

  void get({

    required Function() beforeSend,

    required Function(dynamic data) onSuccess,

    required Function(dynamic error) onError,

  }) {
   
 _dio.get(this.url, queryParameters: this.payload).then((response) {
     
 if (onSuccess != null) {

        onSuccess(response.data);

      }

    }).catchError((error) {

      if (onError != null) {

        onError(error);

      }
    });
  }
}

Answer 1

queryParameters 需要 Map<String, dynamic> 但默认 Map 是 Map<dynamic, dynamic> 。

将payload的映射改为
final Map<String, dynamic> payload;