Custom font in Android is unfortunately not a theme question (correct me if I'm wrong) but is in fact quite simple to implement. In your common base activity overload the setContentView like this:
public void setContentView(int layoutResId) { super.setContentView(layoutResId); View root = getWindow().getDecorView().getRootView(); if (root instanceof ViewGroup) { Typeface font = Typeface.createFromAsset(getAssets(), "<<YOUR FONT FROM ASSETS>>"); iterateKids(root, font); } } private void iterateKids(View view, Typeface font) { if (view instanceof TextView) { ((TextView)view).setTypeface(font); } else if (view instanceof ViewGroup) { ViewGroup group = ((ViewGroup)view); for (int x=0; x<group.getChildCount(); x++) { iterateKids(group.getChildAt(x), font); } } }
it spends aboout 0.3 ~ 2ms on every child in hierarchy (on emulator) so as long as you optimize your layouts to be less than 100 elements a screen it's definitely okay.