ios - 将值传递到sharedClient

我创建了一个sharedClient

+ (id)sharedClient {
static MyClient *__instance;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
    NSURLComponents *urlComponents = [NSURLComponents componentsWithString:BASE_URL];
    urlComponents.user = @"username";
    urlComponents.password = @"password";
    NSURL *url = urlComponents.URL;
    NSLog(@"%@",url);
    __instance = [[MyClient alloc] initWithBaseURL:url];
});
    return __instance;
}

但是如您所见，我已经硬编码了用户名和密码。将变量传递到此类和sharedClient中的最佳方法是什么？目前，我这样打电话给客户

- (IBAction)login:(id)sender {
[SVProgressHUD show];

[[MyClient sharedClient]getPath:@"/users/current.json"
                           parameters:nil
                              success:^(AFHTTPRequestOperation *operation, id responseObject) {

                                  NSString *authToken = [responseObject valueForKeyPath:@"user.api_key"];
                                  [self.credentialStore setAuthToken:authToken];

                                  [SVProgressHUD dismiss];

                                  [self performSegueWithIdentifier: @"loginSuccess" sender: self];

                              } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                  if (operation.response.statusCode == 500) {
                                      [SVProgressHUD showErrorWithStatus:@"Something went wrong!"];
                                  } else {
                                      NSData *jsonData = [operation.responseString dataUsingEncoding:NSUTF8StringEncoding];
                                      NSDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonData
                                                                                           options:0
                                                                                             error:nil];
                                      NSString *errorMessage = [json objectForKey:@"error"];
                                      [SVProgressHUD showErrorWithStatus:errorMessage];
                                  }
                              }];


    [SVProgressHUD dismiss];
}

我一直在考虑实例变量，但是不确定执行此操作的最佳方法是什么。

最佳答案

尝试声明两个sharedClient方法，其中一个使用另一个，但提供更多信息。例如

+ (id)sharedClient {
    return [self sharedClientWithUserID:@"default user" andPassword:@"default password"];
}

+ (id)sharedClientWithUserID:(NSString *)userID andPassword:(NSString *)password {
    //move your dispatch once code here and use the provided userID and password
}

您还可以让sharedClient为用户ID和密码传递nil，然后在其他方法中检查nil并提供一些默认值。

另一个可能的选择是，由于init调用似乎不需要用户ID和密码，因此只需将它们声明为属性并手动设置即可

[yourClass sharedClient].userID = @"id";
[yourClass sharedClient].password = @"password";