public class ReplaceFont {
public static void changeDefaultFont(Context context, String oldFont, String assetsFont) {
Typeface typeface = Typeface.createFromAsset(context.getAssets(), assetsFont);
replaceFont(oldFont, typeface);
}
private static void replaceFont(String oldFont, Typeface typeface) {
try {
Field myField = Typeface.class.getDeclaredField(oldFont);
myField.setAccessible(true);
myField.set(null, typeface);
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
Then in your activity, in onCreate()
method:
// Put your font to assets folder...
ReplaceFont.changeDefaultFont(getApplication(), "DEFAULT", "LinLibertine.ttf");