Android App Keeps Crashing / When Change Device Font

I have an android app I am working on in Eclipse. It has 1 activity with some fragments in it which works fine. But when I go into any of my fragments, which either consist of a layout statically made or dynamically made, I then hit the menu button and go to the "Display" section of my phone to change the font of my android device Ex) Normal to Large or Large to Normal. Once I do that I open my app again thinking that the text in my app should grow/shrink and still be on the same fragment like I have seen in other apps but instead it just crashes.

I have a feeling it has to do something with the fragment or my activity's lifecycle methods but I honestly do not even know where to begin. I understand how the lifecycles flow but as for putting code into these methods to fix this issue I do not even know where to begin. The only methods so far I have used/Override with my code in it is the "onCreate()" in my Activity, onActivityCreated() in my ListFragment and "onCreateView()" in my fragments.

This code snippet here is when I go from Activity (MainActivity) -> ListFragment (JungleListFragment) -> Fragment (JungleInfo)

Code:
10-01 05:10:25.734: I/MainActivity(712): onCreate
10-01 05:10:26.564: I/MainActivity(712): onStart
10-01 05:10:26.564: I/MainActivity(712): onResume
[code]...