Question

这是一个2部分问题。

1。）用户登录应用程序后，我想导航到DashboardViewController。但是，我最后会发出警告。

警告：尝试出席在谁的观点不在窗口层次！

如何解决这个问题？

2.）我想将(id<FBGraphUser>)user传递给DashboardViewController，我该如何实现？

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

Answer 1

在原始视图控制器中，使用prepareForSegue方法准备即将发生的视图控制器。我实际上和你一样有这种情况，这就是我所做的：

扩展您的DashboardViewController对象以包含新属性，您可以在其中存储用户信息：

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

在原始视图控制器和仪表板VC之间配置segue。

在原始视图控制器中，添加一个触发此segue的方法：

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

在您的原始VC中，覆盖prepareForSegue方法：

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

将Facebook登录信息传递给第二个视图

1 个答案: