Facebook登录要安装（iPhone） [英] Facebook Login ask to install (iPhone)

问题描述

我需要在iOS 6的 Facebook-SDK-3.1 的Facebook登录中的帮助。我使用了 Facebook sdk的所有代码示例代码 sessionLoginSample ，我已经使用了 WebView 开头的代码，每当我从新的ID ...它需要我到下面的图像链接到安装在我的项目 .dont知道什么是它是...如果我这样做，然后从代码中的注销。当我再次按按钮登录时，它自动日志-in 而不要求 id和pssword``login页面。再次，它也会自动登录，即使在注销之后，任何人都可以帮助我，为什么在注销后，它会要求存储先前的访问令牌和密码。

和代码是

   - （IBAction）buttonClickHandler：（id）sender {
 
 AppDelegate * appDelegate = [[UIApplication sharedApplication] delegate]; 
 
 
 if（appDelegate.session.isOpen）{
 
 [appDelegate.session closeAndClearTokenInformation]; 
 
} else {
 if（appDelegate.session.state！= FBSessionStateCreated）{
 
 appDelegate.session = [[FBSession alloc] initWithPermissions：[NSArray arrayWithObjects： @email，nil]]; 
 
 
 
 [appDelegate.session openWithBehavior：FBSessionLoginBehaviorForcingWebView 
 
 completionHandler：^（FBSession * session，
 
 FBSessionState state ，
 
 NSError * error）{
 
 FBSession.activeSession = session; 
 
 
 
 [self updateView]; 
 NSLog（@state =％d，state）; 
 
 [FBRequestConnection 
 startForMeWithCompletionHandler：^（FBRequestConnection * connection，
 id< FBGraphUser> user，
 NSError * error）{
 
 userInfo = @; 
 
 
 userInfo = user.username; 
 
 NSLog（@string％@，userInfo）; 
 [self checkfacebook]; 
 
 
 
 
 
}]; 
 
 
}]; } 
 
 
} 
  

解决方案访问您的应用程序一旦用户登录。如果用户想要修改他可以通过登录到fb并更改权限来执行的权限。您可能想查看oAuth了解更多详情。

I need help in the facebook login from Facebook-SDK-3.1 for iOS 6.I have used all the code of the Facebook sdksample code sessionLoginSample,I have used the WebView opening code in this and whenever i login from the new id ...it takes me to the below image link to install in my project .dont know what exactly it is...and if i do so and after that logout from the code ..and when I again press button to login , it automatically log-in without asking for the id and pssword``login page. and again again it automatically logs-in , even after logout./.can anyone help me why after being logout it ask stores the previous access token and password.

and code is

- (IBAction)buttonClickHandler:(id)sender {

AppDelegate* appDelegate = [[UIApplication sharedApplication]delegate];


if (appDelegate.session.isOpen) {

  [appDelegate.session closeAndClearTokenInformation];

} else {
    if (appDelegate.session.state != FBSessionStateCreated) {

         appDelegate.session = [[FBSession alloc] initWithPermissions:[NSArray arrayWithObjects:@"email", nil]];
    }


    [appDelegate.session openWithBehavior:FBSessionLoginBehaviorForcingWebView

                            completionHandler:^(FBSession *session,

                                                FBSessionState state,

                                                NSError *error) {

                FBSession.activeSession = session;



                                [self updateView];
                                NSLog(@" state=%d",state);

                                [FBRequestConnection
                                 startForMeWithCompletionHandler:^(FBRequestConnection *connection,
                                                                   id<FBGraphUser> user,
                                                                   NSError *error) {

                                     userInfo = @"";


                                     userInfo = user.username;

                                     NSLog(@"string %@", userInfo); 
                                         [self checkfacebook];





                                 }];


                            }];    } 


}

解决方案

FB grants access to your app once the user logs in . If the user wants to modify the privileges he can do it by loggin into fb and changing permissions. You might want to look into oAuth for further details.

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