Question

I have a ttf file, and its theoretically possible, but I’m not looking to touch over 500 different lines of code to programmatically change this. What is the easiest way?

http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/Typefaces.html

Answer 1

To extend previous answer with static TYPEFACE:

Add new function:

public static void applyCustomFont(ViewGroup list, Typeface customTypeface) {
            for (int i = 0; i < list.getChildCount(); i++) {
                View view = list.getChildAt(i);
                if (view instanceof ViewGroup) {
                    applyCustomFont((ViewGroup) view, customTypeface);
                } else if (view instanceof TextView) {
                    ((TextView) view).setTypeface(customTypeface);
                }
            }
        }

Get root view of our Layout:

View rootView = findViewById(android.R.id.content)

Than apply custom font for whole activity form with all sub-elements:

applyCustomFont((ViewGroup)rootView, C.TYPEFACE.ArialRounded(this));