Flutter Http.put 更新来自 api 的数据

Question

我有一个屏幕，一个包含所有用户信息的用户个人资料屏幕，在同一个屏幕上，我有一个按钮，当按下它时，它会发送到编辑个人资料屏幕，用户可以在其中更改他的帐户信息，我从中获取帐户信息api，我正在尝试使用 http.put 所以当用户写一些东西来更新他的名字和姓氏时，当用户按下保存更改按钮时，我希望数据更新为用户写的内容，并在配置文件屏幕中显示数据应该更新。我收到 415 错误消息。

final editedFirstName = TextEditingController();
  final editedLastName = TextEditingController();

 body: FutureBuilder<Response>(
                future: futureData,
                builder: (context, snapshot) {
                  if (snapshot.hasData) {
                    AccountData data3 = AccountData.fromJson(
                      json.decode(snapshot.data!.body),
                    );
                    updatedFirstName = data3.firstName;
                    updatedLastName = data3.lastName;

                                       child: TextField(
                                        controller: editedFirstName,
                                        //initialValue: updatedFirstName,
                                        decoration: InputDecoration(
                                          border: OutlineInputBorder(),
                                        ),
                                        style: TextStyle(
                                            fontSize: 17,
                                            fontWeight: FontWeight.bold),
                                        inputFormatters: [
                                          LengthLimitingTextInputFormatter(15)
                                        ],
                                      ),

                                      child: TextField(
                                        controller: editedLastName,
                                        //initialValue: updatedLastName,
                                        decoration: InputDecoration(
                                          border: OutlineInputBorder(),
                                        ),
                                        style: TextStyle(
                                            fontSize: 17,
                                            fontWeight: FontWeight.bold),
                                        inputFormatters: [
                                          LengthLimitingTextInputFormatter(15)
                                        ],
                                      ),



  late Future<Response> futureData;
  String? updatedFirstName;
  String? updatedLastName;

  final editedFirstName = TextEditingController();
  final editedLastName = TextEditingController();

  Future<void> putAccountData() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    String? authorization = prefs.getString('authorization');
    var url = 'https://dev.api.wurk.skyver.co/api/v1/employees/account';
    final Map payload = {
      "firstName": editedFirstName.text,
      "lastName": editedLastName.text
    };
    try {
      final response = await http.put(Uri.parse(url),
          headers: <String, String>{
            'authorization': authorization ?? basicAuth.toString()
          },
          body: json.encode(payload));
      print(response.body);
    } catch (er) {
      print(er);
    }
  }

                              ElevatedButton(   // button to update changes and navigate to the 
                                                profile screen with the updated data
                              child: const Text(
                                'Save Changes  ✓',
                                style: TextStyle(fontSize: 18),
                              ),
                              onPressed: () {
                                print(editedFirstName.text);
                                print(editedLastName.text);
                                Navigator.pushReplacement(
                                  context,
                                  MaterialPageRoute(
                                    builder: (context) => const ProfileScreen(),
                                  ),
                                );
                              },
                            ),
    

Answer 1

试试这个:

ElevatedButton(
   child: const Text(
      'Save Changes  ✓',
      style: TextStyle(fontSize: 18),
   ),
   onPressed: () async {
      await putAccountData();
      print(editedFirstName.text);
      print(editedLastName.text);
      Navigator.pushReplacement(
         context,
         MaterialPageRoute(
            builder: (context) => const ProfileScreen()),
     );
   },
)

将 putAccountData 放在构建方法之外，但放在类中，如下所示:

      Future<void> putAccountData() async {
         String url = 'some url';
         final Map payload = {
           "firstName": editedFirstName.text,
           "lastName": editedLastName.text
         };
         try {
            final response = await http.put(Uri.parse(url),
               body: jsonEncode(payload));
               print(response.body);
          } catch (er) {}
      }