React-Native modules for Android int value returned late?

I have a native Android app that now has a React-Native part to it. In short, i have a list view in native Android/Java. When i tap a row, i start a new Activity which leads to the React-Native code. The components make an API call, but before it does it, my code goes through the React Native module to get a value from the User Preferences in the Java/Android settings for the header so that it can make the proper API call. The React Native API call in /actions/index.js: Back in native Android/Java, i have my modules and packages