如何退出 Facebook 并切换用户？

Question

我在我的应用程序上用用户登录了 facebook。

稍后当我在我的 Facebook 应用程序和浏览器上手动注销该用户时，

(FB.IsLoggedIn) 仍然 returns 正确。出于某种原因，旧的配置文件已保存，我无法使用新用户登录

这是我的代码：

public void FacebookLogin()
{
    if (FB.IsLoggedIn)
        FB.LogOut();  //it doesn't work, user is still logged in


     var permissions = new List<string>() {"email"};
      FB.LogInWithReadPermissions(permissions);  //trying to login a new user, but the last user is still logged in

Answer 1

将您的 FacebookLogin 函数更改为协程函数。通过这样做，您可以检查用户是否已登录，注销用户然后等待每一帧直到 FB.IsLoggedIn 是 false，然后您才能登录另一个用户。还要在等待中添加一个计时器，这样当 FB.IsLoggedIn 在 x 时间内永远不会 false 时，函数不会继续到运行而是显示一些错误并退出.

public IEnumerator FacebookLogin()
{
    //5 seconds loggout time
    float waitTimeOut = 5f;

    //Log out if loggedin
    if (FB.IsLoggedIn)
        FB.LogOut();  //it doesn't work, user is still logged in

    //Wait until logout is done. Also add a timeout to the wait so that it doesnt wait forever
    float timer = 0;
    while (FB.IsLoggedIn)
    {
        if (timer > waitTimeOut)
        {
            Debug.LogError("Failed to log out within " + waitTimeOut + " seconds");
            yield break;
        }
        timer += Time.deltaTime;
        yield return null;
    }
    Debug.Log("Successfully logged out. Now logging another user in");
    var permissions = new List<string>() { "email" };
    FB.LogInWithReadPermissions(permissions);  //trying
}

如果您仍然对此有疑问，您需要使用此答案中的代码在 facebook-sdk-for-unity Github 页面上提交错误报告。

Answer 2

您退出后正在登录。

public void FacebookLogin()
    {
            if (FB.IsLoggedIn)
             {   
              FB.LogOut();  //it doesn't work, user is still logged in
              return;
             }
              var permissions = new List<string>() {"email"};
              FB.LogInWithReadPermissions(permissions);  //t
    }

如何退出 Facebook 并切换用户？

How to Logout from Facebook and switch a user?

c#

facebook

authentication

unity3d

facebook-unity-sdk