I designed an application UI for an android application and used Arial font inside the app for all the text. Now the developer used the default fonts of Android. I asked him to overwrite the default fonts with Arial. He placed the Arial.ttf file inside the font directory and the problem was solved. BUT now, I downloaded new font app on my android handset which is used to change the default font of android from the settings menu. When I change that font, the Arial font in my specific application changes too. I am looking for a solution though which I can use my custom defined font in my developer application and even if Android Font settings are changed, my app is not effected with it.