JSON-RPC-Java | Random.org JSON-RPC API Java implementation | Cryptocurrency library

Background

I'm having an issue involving updates to a Fragment in an Android project. The app rolls dice for D&D players. The project employs an API from Random.Org to provide for greater entropy in random number generation compared to the Java Math.random method.

The app displays a Tab Layout with a View Pager which switches between three tabs - one to roll a single die, one to roll a set of dice, and one to show the roll history and log info. Roll Die is in position 0, Roll Set is in position 1, and History is in position 2. View Pager uses a FragmentPagerAdapter.

History contains two TextViews which I use to display roll results and logging data to ensure connection to the API went well. Data is passed from the RollDie and RollSet fragments to the Main Activity by two interfaces. The interface methods then send the data to the FragmentPagerAdapter, which in turn passes two String ArrayLists to the History fragment via bundle.

The Problem

My problem is the History tab only seems to update after the single die roll tab is loaded. When I roll a single die then check the history page, the relevant TextViews display as they should. When I roll a set however, the history page doesn't update until I return to the single die roll tab.

Any help with this issue would be greatly appreciated. Relevant code posted below.

Code from the API can be found on Github. I have also left out two classes I wrote called Die and DieSet - these work well and I figured this is already long enough. I'm happy to post those classes if anyone thinks it will help.

Code related to the API key has been omitted along with some IDE generated comments.

Main Activity