Facebook Login error when facebook account is alre

问题:

I have faced an issue in facebook SDK.

if I remove facebook account from System Preferences/Facebook and after that I try to login with facebook then it will redirect me to safari of facebook native application and I can logged in.

But when I add facebook account in System Preferences/Facebook and after that I try to login with facebook then it will not redirect me and give popup "Your app" would like to access your basic info and list of friends. and I allows to it. but FBSessionStatus always failed and I cannot logged in.

I have try to search much but not get solution for it.

I have use latest facebookSDK.

my code for login is below

    NSArray *permissions = [[NSArray alloc] initWithObjects:@"email",nil];

    // Attempt to open the session. If the session is not open, show the user the Facebook login UX

    [FBSession openActiveSessionWithReadPermissions:permissions
                                       allowLoginUI:true
                                  completionHandler:^(FBSession *session,
                                                      FBSessionState status,
                                                      NSError *error)
     {
         NSLog(@"Running completion handler");

         if (status == FBSessionStateClosedLoginFailed || status == FBSessionStateCreatedOpening) {
             NSLog(@"Unable to activate Facebook Session");
         }
         else {
             NSLog(@"Logged in via facebook.  Requesting User Information.");
         }
     }];

and in AppDelegate.h

@property (strong, nonatomic) FBSession *fbsession;

AppDelegate.m

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{
    return [FBSession.activeSession handleOpenURL:url];
}

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
    NSLog(@"AppDelegate is attempting to extract Facebook token from URL");
    return [FBAppCall handleOpenURL:url sourceApplication:sourceApplication withSession:self.fbsession];
}

I get log every Time as below

AppDelegate is attempting to extract Facebook token from URL
Unable to activate Facebook Session

Please help me to solve this issue. Thanks in advance.

回答1:

I found my Solution by adding bundle identifier in facebook app on developer.facebook.com (make iOS native app)