title: Android button for set as ringtone from my json mp3 URL link
body: <p>I have created 1 android application it is simple 2 buttons which is stream and download mp3 file from json URL .
  The mp3 file downloaded  in my custom folder then I want to crate set as ringtone button it  can be picking file my downloaded custom folder and set as ring tone .
   please help</p>