Question

我有多个视图控制器。

第一个是登录页面，其中包含用户名和密码文本字段。我在这里使用Parse签署用户：

- (IBAction)signup:(id)sender{
    PFUser *user = [PFUser user];
    user.username = _username.text;
    user.password = _password.text;
    [user signUpInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
        if (!error) {

        } else {
            [self dismissModalViewControllerAnimated:YES];
            NSLog(@"already username");
            [self.navigationController popToRootViewControllerAnimated:YES];
            _username.textColor = [UIColor redColor];
            _inuse.text = @"Username is already taken!";
            // Show the errorString somewhere and let the user try again.

        }
    }];
}

然后在下一个视图控制器上，我想向用户添加信息。

所以我试着在下一个视图控制器上执行此操作。我有两个文本字段firstname和lastname：

- (IBAction)signup_name:(id)sender{
    PFUser *user = [PFUser user];
    user[@"firstname"] = _firstname.text;
    user[@"lastname"] = _lastname.text;
    [user saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
        if (!error) {

        } else {
            [self dismissModalViewControllerAnimated:YES];
            NSLog(@"already username");
            [self.navigationController popToRootViewControllerAnimated:YES];
            _username.textColor = [UIColor redColor];
            _inuse.text = @"Username is already taken!";
            // Show the errorString somewhere and let the user try again.

        }
    }];
}

但我收到错误消息：'除非他们已经注册，否则无法保存用户。首先致电signUp。'

我尝试将其添加到- (IBAction)signup:(id)sender如果没有error：

[PFUser logInWithUsernameInBackground:_username.text password:_password.text
                                            block:^(PFUser *user, NSError *error) {
                                                if (user) {
                                                    // Do stuff after successful login.
                                                } else {
                                                    // The login failed. Check error to see why.
                                                }
                                            }];

Answer 1

注册成功后，[PFUser currentUser]可以访问当前用户，所以......

- (IBAction)signup_name:(id)sender{
    PFUser *user = [PFUser currentUser];

应该工作。

使用ios解析用户配置文件？

1 个答案: