title: android :activity
body: <p>i have two activities 
  1) downloading something on oncreate function with help of asyn task ,and had one button.
  2) secons activity display on click of button.
  now when i go back to previous ie first activity , then downloading starts again, i want to get the previous filled data view ,instead of startg the previous process again ..
  canu please guide me
  thanks </p>