title: How to handle the status of the returning back from a child activity
body: <p>I want after directing the user to the preferences window "setting", to have an indicator implies whether or not the user returned back from the preferences activity whether he ticked a designated option or not.</p>
  
  <p>I know that I can start the preferences activity"<code>child activity</code>" from my current activity "<code>Parent</code>", using <code>startActivity()</code> or <code>startActivityForResult()</code>. but in this case I want to check the status of the returning back from the <code>child activity</code></p>
  
  <p><strong><em>UPDATE</em></strong></p>
  
  <p>Or to be more specific, I want to check the if the "gps enable" option which resides in the "Location Services" menu is ticked or not.</p>