Question

我将facebook与我自己的应用程序集成以进行登录，并且我与本机facebook集成并且代码正在关注。现在，当设置中没有添加帐户时，会发生什么？＆gt; Facebook或如果添加了帐户，然后用户在浏览器中更改了同一帐户的密码，而不是在设置中我想要将用户拖到iPhone的Facebook应用程序登录，或者如果没有应用程序，那么我想跳转用户从浏览器登录。这是我的代码。

  _accountStore = [[ACAccountStore alloc]init];
ACAccountType *FBaccountType= [_accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];

NSDictionary *options = [[NSDictionary alloc] initWithObjectsAndKeys:
                         FB_APP_ID, ACFacebookAppIdKey,
                         [NSArray arrayWithObject:@"email"], ACFacebookPermissionsKey,
                         nil];

[_accountStore requestAccessToAccountsWithType:FBaccountType options:options completion:
 ^(BOOL granted, NSError *e) {
     if (granted)
     {
         NSArray *accounts = [_accountStore accountsWithAccountType:FBaccountType];
         //it will always be the last object with single sign on
         _facebookAccount = [accounts lastObject];


         ACAccountCredential *facebookCredential = [_facebookAccount credential];
         NSString *accessToken = [facebookCredential oauthToken];
         NSLog(@"Facebook Access Token: %@", accessToken);
         _facebookAccount = [accounts lastObject];


 _facebookToken = [facebookCredential oauthToken];
         NSLog(@"facebook account =%@",_facebookAccount);

     }
     else
     {

         NSLog(@"%@",e);
         NSLog(@"%d",e.code);}

Answer 1

使用Facebook SDK。要更改优先级，您可以更改行为， FBSessionLoginBehavior（枚举）。

-(void)loginFacebookWithCompletion:(RTLoginHandler)handler
    {
        // Initialize a session object
        FBSession *session = [[FBSession alloc] init];
        // Set the active session
        [FBSession setActiveSession:session];
        // Open the session
        [session openWithBehavior:FBSessionLoginBehaviorUseSystemAccountIfPresent
                completionHandler:^(FBSession *session,
                                    FBSessionState status,
                                    NSError *error)
        {
            if(status == FBSessionStateOpen)
            {
               // You get a opened session here
            }

        }];
    }

检查设置中是否没有添加帐户然后跳转到iPhone中的facebook app facebook登录

1 个答案: