Flutter - 如何使用控制器更新用户信息？

Question

我对 Flutter 没有那么多经验。

我正在创建一个帐户信息页面。在该页面上，用户可以更新他们的详细信息。我已经创建了所需的 API 服务和控制器。

当我运行代码时，出现以下错误。

Too many positional arguments: 0 allowed, but 6 found.
Try removing the extra positional arguments.
    productController.customerUpdate(
                                    ^

如何解决这个问题？

API服务：

Future<Response?> customerUpdate(String? email, String? firstName, 
      String? lastName, String? phone, String? customerAccessToken) async {
    var uri = '$_url/update-customer';
    print(uri);
    // String token = box.read('token');

    // dio.options.headers["Authorization"] = "Bearer $token";
    try {
      final response = await dio.patch(uri, data: {
        'email': email,
        'firstName': firstName,
        'lastName': lastName,
        'phone': phone,
        'customerAccessToken': box.read('token')
      });
      if (response.statusCode == 200) {
        box.write('token', response.data['token']);
        box.write('information_updated', true);
      }
      return response;
    } on DioError catch (e) {
      debugPrint(e.response.toString());
      return e.response;
    }
  }

产品负责人：

customerUpdate({
      @required String? email,
      String? firstName,
      String? lastName,
      String? phone,
      String? customerAccessToken,
      context}) async {
    loader('Saving...');
    dio.Response? response = await remoteServices.customerUpdate(
        email, firstName, lastName, phone, customerAccessToken);

    if (response!.statusCode == 200) {
      Get.back();
      Get.back();
      myDialog.showFloatingFlushbar(
          context, 
          'Information Updated', Color(0xff734FE0), Color(0xff734FE0));
    } else {
      myDialog.showFloatingFlushbar(context, 'Please check the errors above',
          Colors.red.shade800, Colors.red.shade700);
    }
  }

代码：

final box = GetStorage();

  final TextEditingController _emailController = TextEditingController();
  final TextEditingController _firstNameController = TextEditingController();
  final TextEditingController _lastNameController = TextEditingController();
  final TextEditingController _phoneController = TextEditingController();
  
  customerUpdate() {
    productController.customerUpdate(
        email: _emailController.text,
        firstName: _firstNameController.text,
        lastName: _lastNameController.text,
        phone: _phoneController.text,
        customerAccessToken: box.read('token'),
        context: context);
  }

Answer 1

错误消息“太多位置参数”意味着方法或函数需要特定数量的特定顺序的参数，但您传递的参数超出预期。

在您的情况下，发生错误是因为您将六个参数传递给

customerUpdate

类的

productController

方法，该方法被定义为仅接收五个参数。

customerUpdate

的

productController

方法应更新为根据需要包含

context

参数：

customerUpdate({
      @required String? email,
      String? firstName,
      String? lastName,
      String? phone,
      String? customerAccessToken,
      @required BuildContext context}) async {
    // Your implementation here
}

然后，在您的

customerUpdate

函数中，更新调用以传递

context

参数：

customerUpdate() {
    productController.customerUpdate(
        email: _emailController.text,
        firstName: _firstNameController.text,
        lastName: _lastNameController.text,
        phone: _phoneController.text,
        customerAccessToken: box.read('token'),
        context: context); // Pass the context argument here
}