所以这就是问题所在。重现的步骤:Facebook SDK 3.2,任何 iPhone 设备
1.Login to the Facebook account in the iPhone Setting.
2.Launch the Scrumptious application.
3.Click on login button.
4.Accept the Permission.
5.Remove the application from the Device.
6.Remove the app from the Facebook App setting from the Accounts setting of ur Facebook.
7.Reinstall the application.
8.Clik on the login button.
Now here is the issue.It goes to the "Profile" Screen and then logs out automatically prompting `Your current session is no longer valid. Please log in again.`
为什么会发生这种情况?如何克服这个问题?