title: onBackpressed DialogFragment
body: <p>I have 3 custom dialogs (DialogFragment). All are not cancelable, because it is necessary, that the user can't close them. The first dialog starts the second, and the second the third. Now I want to came back to the previous dialog, if I'm using the backclick. At this moment I have two options, but both are not work's really fine: </p>
  
  <ul>
  <li><p>I start from one dialog the new one, but never call the dismiss. -> So in the background of the next dialog is always the view of the previous dialog</p></li>
  <li><p>I call dismiss, if I'm start the next dialog, but then he will not return to the previous dialog, but close the dialog.</p></li>
  </ul>
  
  <p>What can I do, to start the new dialog, so, that the first one is not visible, but if I'm click back, the dialog is visible again?</p>
  
  <p>Thanks a lot for help :))</p>