title: Async task versus service to download data
body: <p>I want to know which is better to download files, async task or service?</p>
  
  <p>My app has eight buttons, which one starts one direfferent download (which download has ~10MB). When the user clicks on one button or more to download data is better to use async task or service?</p>
  
  <p>Thanks! </p>