Upload/download with access_token in android

Hi Box team,

I want to do api call with access_token which I have in android but I have some questions related this this implementation.

• How to apply access token to BoxSession / or specific api call?
• Also I don't see any document related this scenario.

Also I am trying with UserId but there is also not any hope. Actually I don't want to login and get access token from app. I just want to do upload/download to/from specific box account. 

So Kindly please help me with this.