Question

我正在使用Xcode 6＆amp; Facebook iOS SDK 4.3，我根据Facebook's guide嵌入了代码，登录工作，但是出于某种原因 -

登录后，该按钮不会更改为“退出”，并保持“使用Facebook登录”。

有没有人遇到过这个问题？

Answer 1

so I started all over, and followed the instructions from the guide:

1.in the viewController.h file:

#import < FBSDKCoreKit/FBSDKCoreKit.h> //<-delete the space

#import < FBSDKLoginKit/FBSDKLoginKit.h>//<-delete the space

@interface ViewController : UIViewController<FBSDKLoginButtonDelegate>
@property (weak, nonatomic) IBOutlet FBSDKLoginButton *loginButton;

2.in the viewController.m file:

-(void) viewDidLoad{
   if ([FBSDKAccessToken currentAccessToken]) {
   // User is logged in, do work such as go to next view controller. 
   }

   self.loginButton.readPermissions = @[@"public_profile", @"email", @"user_friends"];

   FBSDKLoginButton *loginButton = [[FBSDKLoginButton alloc] init];
  [self.view addSubview:loginButton];
}

and after that didn't work, I've found this thread that mentioned I also need to add few things to the AppDelegate didFinishLaunchingWithOptions :

return [[FBSDKApplicationDelegate sharedInstance] application:application
                                didFinishLaunchingWithOptions:launchOptions];

and

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
return [[FBSDKApplicationDelegate sharedInstance] application:application
                                                      openURL:url
                                            sourceApplication:sourceApplication
                                                   annotation:annotation];
}

and then it worked! finally I had the Log in button changed to Log out!

Answer 2

我遇到了同样的问题，无法在任何地方找到答案。原来这是一个模拟器问题;一旦我在设备上运行相同的代码（iOS 9.3.1），一切都很顺利。

Answer 3

请记住启用钥匙串共享功能

ios Facebook登录按钮 - 不会更改为退出

3 个答案: