Facebook Ios sdk登录

问题描述：

我想创建一个功能与iOS的Facebook的Facebook的，我将能够登录，如果我登录，我将能够看到nslog字符串“登录”。但是我根本没有看到它的字符串。此外，登录似乎在推按钮和看到我的Facebook应用程序方面工作正常，并按OK继续。有人能告诉我我做错了什么吗？Facebook Ios sdk登录

-(IBAction)popButton:(id)sender { 

    TUAppDelegate *appDelegate = (TUAppDelegate *)[[UIApplication sharedApplication] delegate]; 

// this button's job is to flip-flop the session from open to closed 
if (appDelegate.session.isOpen) { 
    // if a user logs out explicitly, we delete any cached token information, and next 
    // time they run the applicaiton they will be presented with log in UX again; most 
    // users will simply close the app or switch away, without logging out; this will 
    // cause the implicit cached-token login to occur on next launch of the application 
    [appDelegate.session closeAndClearTokenInformation]; 

} else { 
    if (appDelegate.session.state != FBSessionStateCreated) { 
     // Create a new, logged out session. 
     appDelegate.session = [[FBSession alloc] init]; 
    } 

    // if the session isn't open, let's open it now and present the login UX to the user 
    [appDelegate.session openWithCompletionHandler:^(FBSession *session, 
                FBSessionState status, 
                NSError *error) { 
     // and here we make sure to update our UX according to the new session state 
     [self updateView]; 
    }]; 
} 
    } 
- (void)updateView{ 
// get the app delegate, so that we can reference the session property 
    TUAppDelegate *appDelegate = (TUAppDelegate *)[[UIApplication sharedApplication] delegate]; 
if (appDelegate.session.isOpen) { 
    NSLog(@"Logged In"); 

} else { 
    NSLog(@"Not Logged In"); 
} 
}

答

我怀疑你已经错过了至少步骤2d，接线的OpenURL回到Facebook的SDK：

https://developers.facebook.com/docs/tutorials/ios-sdk-tutorial/authenticate/

...这么说，你可以很容易地错过了。如果您在登录后再次看到您的应用，那么我怀疑您已将URL方案添加到Info.plist中，否则请检查该方案。

Facebook Ios sdk登录

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