Facebook SDK 原生登录错误

Posted 2023-03-14

【中文标题】Facebook SDK 原生登录错误

【英文标题】：Facebook SDK native login error

【发布时间】：2014-10-14 00:25:43

【问题描述】：

注意：我正在遵循来自 Native Facebook Login stopped working after SDK update to 3.14 的本地登录建议。

错误如下：

2014-10-13 20:03:27.378 注册[1916:407643] 错误 Domain=com.facebook.sdk Code=9 "未授予访问权限 脸书账号。验证设备设置。” UserInfo=0x1753c630 NSLocalizedDescription=尚未授予 Facebook 访问权限 帐户。验证设备设置。, NSLocalizedFailureReason=Access has 未授予 Facebook 帐户。验证设备设置。

这是下面的代码：

// RegistrationManager.m

- (void)setupFacebook

    FBSessionStateHandler completionHandler = ^(FBSession *session, FBSessionState status, NSError *error) 
        [self sessionStateChanged:session state:status error:error];
    ;

    if ([FBSession activeSession].state == FBSessionStateCreatedTokenLoaded)
    
        // we have a cached token, so open the session
        [[FBSession activeSession] openWithBehavior:FBSessionLoginBehaviorUseSystemAccountIfPresent
                                  completionHandler:completionHandler];
    
    else
    
        [self clearAllUserInformation];

        // create a new facebook session
        FBSession *fbSession = [[FBSession alloc] initWithPermissions:@[@"public_profile"]];
        [FBSession setActiveSession:fbSession];
        [fbSession openWithBehavior:FBSessionLoginBehaviorUseSystemAccountIfPresent completionHandler:completionHandler];
    


- (void)clearAllUserInformation

    [FBSession.activeSession closeAndClearTokenInformation];
    [FBSession renewSystemCredentials:^(ACAccountCredentialRenewResult result, NSError *error) 
        NSLog(@"%@", error);
    ];
    [FBSession setActiveSession:nil];

// RegistrationViewController.m

- (IBAction)loginButtonPressed:(id)sender

    // If the session state is any of the two "open" states when the button is clicked
    if (FBSession.activeSession.state == FBSessionStateOpen
        || FBSession.activeSession.state == FBSessionStateOpenTokenExtended)
    
        // Close the session and remove the access token from the cache
        // The session state handler (in the app delegate) will be called automatically
        [FBSession.activeSession closeAndClearTokenInformation];

        // If the session state is not any of the two "open" states when the button is clicked
     else
    
        FBSessionStateHandler completionHandler = ^(FBSession *session, FBSessionState status, NSError *error) 
            [registrationManager sessionStateChanged:session state:status error:error];
        ;

        // create a new facebook session
        FBSession *fbSession = [[FBSession alloc] initWithPermissions:@[@"public_profile"]];
        [FBSession setActiveSession:fbSession];
        [fbSession openWithBehavior:FBSessionLoginBehaviorUseSystemAccountIfPresent completionHandler:completionHandler];
    

当我点击按钮时，它只是说

2014-10-13 20:03:29.560 注册[1916:407643] 会话关闭 2014-10-13 20:03:29.561 注册 [1916:407643] 用户注销。 2014-10-13 20:03:29.573 注册[1916:407643] 用户注销。

【参考方案1】：

这意味着用户曾经在请求权限的弹出窗口中选择了“不允许”。如果他在“设置”中链接了他的 Facebook 帐户，从现在开始，每次他尝试登录时都会显示此错误。它不会回退到 Safari 或其他任何东西，只是显示此错误。用户需要进入 Settings -> Facebook 并将您的应用的滑块设置为 ON。