Facebook登录可在iPhone模拟器上使用，但不能在iPhone设备上使用

Question

In my app, I want to take photos from the facebook. so i used facebook ios sdk. i can be able to authorize from the below code:

 if (appDelegate.session.isOpen) {

            //[appDelegate.session closeAndClearTokenInformation];
            [self retrieveAlbums];

        } 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
                //NSLog(@"%@",session.accessTokenData.accessToken);
                [self retrieveAlbums];
            }];

It works fine on iphone simulator. But I can't able to login on my iphone 4 device. When I tried to login it will open a safari and then shows the message Updating. Then it will redirect without authorization. access token retrieved as nil. So I cant able to retreive images.

Please help me.

EDIT

Thanks for everyone .Finally I solved my problem. It is because i enabled sandbox mode in facebook developer account settings. When i disabled the sandbox mode, it works normally.

Answer 1

Try clearing the cookies and cache of your safari, going to Settings. Also if you do not want the app to redirect to Safari, just dont provide the URL Scheme in your info.plist that is something like "fb-AppId-" and it will open a popup for login

Answer 2

I was having the similar problem and solved it by composing couple of solutions in this website. First of all I got rid of the url scheme at my info plist. So now my app opens up the facebook login dialog inside my registration page. Which is a good thing because it doesn't go back and forth to safari for facebook authentication and you stay inside the app. The second thing I made is, putting an error handling mechanism inside my code for facebook login. So if login with facebook fails, it uses another strategy for logging in.

Here is my code.

  - (void)loginView:(FBLoginView *)loginView handleError:(NSError *)error {

      NSArray *permissions = [[NSArray alloc] initWithObjects:
                        @"public_profile", @"user_friends", @"email",
                        nil];
      FBSession *session = [[FBSession alloc] initWithPermissions:permissions];
      [FBSession setActiveSession:session];

      [self openSessionWithAllowLoginUI:YES completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
         if (!error && status == FBSessionStateOpen) {
           NSString *token = session.accessTokenData.accessToken;
           NSLog(@"Logged in! - Token -- %@", token);
         } else {
           NSLog(@"Something wrong happened");//you can check the error code here
         }
     }];
  }