将Facebook登录信息传递给第二个视图

  • Z时代
  • 2024-01-10
  • 分类：问答

这是一个2部分问题。将Facebook登录信息传递给第二个视图

1.）一旦用户登录到应用程序，我想导航到DashboardViewController。但是，我最后会发出警告。

警告：尝试在其针对目前 不在窗口 层次！

如何解决这个问题？

2.）我想通过(id<FBGraphUser>)user到DashboardViewController，我该怎么做到这一点？

的代码如下：

-(void)viewWillAppear:(BOOL)animated{ 
    //[self toggleHiddenState:YES]; 
    self.lblLoginStatus.text = @""; 
    self.loginButton.delegate = self; 
    self.loginButton.readPermissions = @[@"public_profile", @"email"]; 
} 
- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 
#pragma mark - Private method implementation 
-(void)toggleHiddenState:(BOOL)shouldHide{ 
    self.lblUsername.hidden = shouldHide; 
    self.lblEmail.hidden = shouldHide; 
    self.profilePicture.hidden = shouldHide; 
} 
#pragma mark - FBLoginView Delegate method implementation 
-(void)loginViewShowingLoggedInUser:(FBLoginView *)loginView{ 
    self.lblLoginStatus.text = @"You are logged in."; 
    [self toggleHiddenState:NO]; 
} 
-(void)loginViewFetchedUserInfo:(FBLoginView *)loginView user:(id<FBGraphUser>)user{ 
    NSLog(@"%@", user); 
    self.profilePicture.profileID = user.objectID; 
    self.lblUsername.text = user.name; 
    self.lblEmail.text = [user objectForKey:@"email"]; 
// 
    [self performSelector:@selector(displayDashboard) withObject:nil afterDelay:0.5]; 
} 
-(void)displayDashboard{ 
    DashboardViewController *vc = [self.storyboard instantiateViewControllerWithIdentifier:@"DashboardSegue"]; 
    [[[[[UIApplication sharedApplication] delegate] window] rootViewController] presentViewController:vc animated:YES completion:nil]; 
} 
-(void)loginViewShowingLoggedOutUser:(FBLoginView *)loginView{ 
    self.lblLoginStatus.text = @"You are logged out"; 
    [self toggleHiddenState:YES]; 
} 
-(void)loginView:(FBLoginView *)loginView handleError:(NSError *)error{ 
    NSLog(@"OKKKKK %@ ", [error localizedDescription]); 
} 
@end

回答：

在您的始发视图控制器，使用prepareForSegue方法准备即将到来的视图控制器。其实我有相同的情况下，你，这是我做的：

扩展您DashboardViewController对象包括一个新的属性，在这里你可以存储用户信息：

@property (nonatomic) id<FBGraphUser> *fbUserInfo;

配置之间的SEGUE您原始视图控制器和仪表板VC。

在你发起的视图控制器，添加将触发此赛格瑞的方法：

- (void)displayAnotherVC:(YourClass *)post { 
    [self performSegueWithIdentifier:@"showCommentsSegue" sender:post]; 
}

在你发起VC，超控器的prepareForSegue方法：

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{ 
     if([segue.identifier isEqualToString:@"yourSegue"]){ 
      YourCustomViewController *userProfileViewController = (YourCustomViewController *)segue.destinationViewController; 
      userProfileViewController.yourUserInfoProperty = (YourClass *)sender; 
     } 
    }

以上是 将Facebook登录信息传递给第二个视图 的全部内容， 来源链接： utcz.com/qa/264815.html

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