title: return to full backstack when app started (a) from android market (b) then home
body: <p>Steps:</p>
  
  <ol>
  <li>User starts app from Android Market application</li>
  <li><p>User clicks "Start child"  </p>
  
  <p>stack: ActivityMain > ActivityChild</p></li>
  <li><p>User presses home button and returns to the app through "launch icon"</p></li>
  <li><p>Android opens "last task" + create next ActivityMain  </p>
  
  <p>stack: ActivityMain > ActivityChild > ActivityMain</p></li>
  </ol>
  
  <p>I expect that click on "lauch icon" will just return to previous stack [without actually creating new activity].<br>
  I expect stack:  </p>
  
  <pre><code>ActivityMain &gt; ActivityChild
  </code></pre>
  
  <p>How to achive it???</p>
  
  <p>On the other hand, when user in the above 1st step starts app dicertly from "launch icon" then the problem does'n exist.</p>
  
  <p>Manifest:</p>
  
  <pre><code>&lt;application
      android:icon="@drawable/ic_launcher"
      android:label="@string/app_name" &gt;
      &lt;activity
          android:label="ActivityMain"
          android:name=".ActivityMain" &gt;
          &lt;intent-filter &gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
      &lt;activity
          android:label="ActivityChild"
          android:name=".ActivityChild" &gt;
      &lt;/activity&gt;
  &lt;/application&gt;
  </code></pre>
  
  <p>Thanks for help!</p>