title: In android, How to resume previous activity , on button click from second activity
body: <p>I have a form to be filled by user and next button "Next" in Activity1. </p>
  
  <p>When user clicks "Next" button second activity Activity2 is started.  </p>
  
  <p>In Activity2 i have previous button "Previous".(* not device back button)</p>
  
  <p>So when user clicks " Previous" button, Activity1 should be opened with the entered details in the form.  </p>
  
  <p>Activity1 should not be refreshed.   </p>
  
  <p>Seached alot on stackoverflow but no luck..!!!</p>