Question

我正在尝试通过遵循此tutorial来填充从API获取的数据的个人资料页面。我不知道为什么，但是出现下一个错误“未处理的异常：类型'_InternalLinkedHashMap'不是强制类型转换中'列表'类型的子类型”，我从字面上查找并尝试了所有操作。我的模型是这样的：

class Profile {
  final String firstName;
  final String lastName;
  final String city;
  final String street;
  final String streetNo;
  final String postcode;
  final String state;
  final String country;
  final String phoneNumber;
  final String languages;
  final String certified;

  Profile._({this.firstName, this.lastName, this.city, this.street, this.streetNo, this.postcode, this.state, this.country, this.phoneNumber, this.languages, this.certified});

  factory Profile.fromJson(Map<String, dynamic> json) {
    return Profile._(
  firstName: json['response']['user']['first_name'],
  lastName: json['response']['user']['last_name'],
  city: json['response']['user']['city'],
  street: json['response']['user']['street'],
  streetNo: json['response']['user']['street_no'],
  postcode: json['response']['user']['postcode'],
  state: json['response']['user']['state'].toString(),
  country: json['response']['user']['country'].toString(),
  languages: json['response']['languages'].toString(),
  certified: json['response']['certified'].toString()

  );
}
}

API请求是这样的：

_fetchAndNavigate() async {
    _sharedPreferences = await _prefs;
    var uri = host + '/translators/' + AuthUtils.getId(_sharedPreferences);
      var token =AuthUtils.getToken(_sharedPreferences);

    Map<String, String> requestHeaders = {
       'Authorization': 'JWT $token'
     };

    final response = await http.get(
      uri,
      headers: requestHeaders
    );
      if(response.statusCode == 200) {
        (json.decode(response.body) as List)
          .map((data) => new Profile.fromJson(data))
        .toList();
        print(response);
        print(list);
      }

  }

调试器在分析“作为列表”时抛出错误，但我不明白为什么。我不完全确定自己在做什么错或者是某种错误。非常感谢你！

JSON请求失败类型'_InternalLinkedHashMap <string，dynamic =“”>'不是类型转换中类型'List <dynamic>'的子类型

0 个答案: