How to install external fonts into android studio for low target versions? -

i looking client approved fonts android application. problem how can make android application supportable external fonts. because in assets/fonts folder files seem invalid ? sign in them.

thank you.

put file ttf files in assets/fonts .then

textview mytextview=(textview)findviewbyid(r.id.textbox); typeface typeface=typeface.createfromasset(getassets(),"fonts/mytruetypefont.ttf"); mytextview.settypeface(typeface); 

here tutorial on click here