how to refresh an oauth token when using the Facebook iPhone SDK

Question

I\'m using the Facebook SDK for iOS in my app: http://github.com/facebook/facebook-ios-sdk

The oAuth token expires after about 2 hours. How can I \"refresh\" the oAuth

Answer 1

As per the Facebook SDK documentation:

The Facebook SDK automatically refreshes the user's session if necessary. When it does this, the state also transitions to the FBSessionStateOpenTokenExtended state.

Also to further clarify (since SDK version 3.1):

The SDK refreshes session automatically on API calls.

It also refreshes the token data as needed when follow-on authentication or Facebook API calls made using the SDK.