Android Tab Activity
<ol>
<li>I have 4 tabs in activity group.  </li>
<li>In Each tab(Separate Activity group) there are around 5 activities and I'm switching   between the activities without any problem.                                                   </li>
<li>My problem is with the device Emulator device back button.</li>
<li>Suppose I'm on 4th tab when application launches. and when I click on back button I'm showing dialog box to exit app. and it showing me the dialog box as well. But when I move to some other activities in 4th tab I'm not able to maintain the stack of activities and whenever I press back button then my app is minimizing.
this problem is occurring in all tabs.</li>
</ol>

<p>Please help me.</p>
