android facebook login token webview

How to login into facebook in WebView if already have access token from FB SDK in Android

I’m developing android app in which I have login via Facebook SDK. In app I also have facebook social comments displayed in webview. But problem is even if user is logged through fb sdk, the webview doesn’t know about it and for posting new comment it requires user to login.

My question is: Is there any way how to pass login from facebook sdk session to webview? For example by some javascript function to which I give access token string and call it on webview so it gets logged in and ready for posting comments?

Thanks 🙂