Question

这是我登录facebook的代码，当我完成登录后，FaceBookLogIn.xib不会正常解散，

当我退出应用程序并重新启动它时工作正常，我的主视图出现。

一旦用户唱歌，我怎么能解除viewcontroller？

的更新 的

我将app AppDelegate中的所有代码移动到我的主视图控制器

当我唱歌时，我会进入nslog

“2013-12-07 13：02：49.650 barbar [2275：70b]用户会话发现”

蝙蝠仍然认为不要忽视

如果我退出并返回应用程序，则会显示tabbarviewcontroler并获取我的nslog -

2013-12-07 13：06：42.162 barbar [2303：70b]用户登录Innnnn

   - (void)viewDidLoad
{
    [super viewDidLoad];

}

-(void)viewDidAppear:(BOOL)animated{


    if (FBSession.activeSession.state
        == FBSessionStateCreatedTokenLoaded) {

        NSLog(@"User Logged Innnnn");
        //[self dismissViewControllerAnimated:YES completion:Nil];
    }
    //create and present the login view controller
    else {
        NSLog(@"the user not login");
        FacebookConect * showfacebookconnectview = [[FacebookConect alloc]initWithNibName:@"FacebookConect" bundle:Nil];
        [self presentViewController:showfacebookconnectview animated:YES completion:Nil];


    }
    animated = YES;
}

- (void)sessionStateChanged:(FBSession *)session
                      state:(FBSessionState) state
                      error:(NSError *)error
{
    switch (state) {
        case FBSessionStateOpen:
            if (!error) {
                // We have a valid session
                NSLog(@"User session found");
                [self dismissViewControllerAnimated:YES completion:Nil];
            }
            break;
        case FBSessionStateClosed:
        case FBSessionStateClosedLoginFailed:
            [FBSession.activeSession closeAndClearTokenInformation];
            break;
        default:
            break;
    }

    [[NSNotificationCenter defaultCenter]
     postNotificationName:FBSessionStateChangedNotification
     object:session];

    if (error) {
        UIAlertView *alertView = [[UIAlertView alloc]
                                  initWithTitle:@"Error"
                                  message:error.localizedDescription
                                  delegate:nil
                                  cancelButtonTitle:@"OK"
                                  otherButtonTitles:nil];
        [alertView show];
    }
}

- (BOOL)openSessionWithAllowLoginUI:(BOOL)allowLoginUI {
    /*
     we pass this permissions array into our request
     I only request email, but there are many more options
     */
    NSArray *permissions = [[NSArray alloc] initWithObjects:
                            @"email",
                            nil];

    return [FBSession
            openActiveSessionWithReadPermissions:permissions
            allowLoginUI:allowLoginUI
            completionHandler:^(FBSession *session,
                                FBSessionState state,
                                NSError *error) {
                [self sessionStateChanged:session
                                    state:state
                                    error:error];

            }];
}

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication
         annotation:(id)annotation {
    // attempt to extract a token from the url
    return [FBSession.activeSession handleOpenURL:url];
}



@end

Answer 1

我不建议使用AppDelegate直接显示登录屏幕。看起来您正在使用Storyboards / Xib来显示您的界面。出于这个原因，我允许默认操作发生（因为您通过手动设置rootViewController属性来阻止它）。然后，在主视图控制器中，检查Facebook是否会显示对话框（presentViewController:animated:completion:），然后可以按上述方式解除，并显示原始主视图控制器。

解雇ios中的视图控制器

1 个答案: