title: Android main activity does not launch on start
body: <p>The main activity does not launch when I open the application; I close it by clicking on the home button. When the app starts, it opens on the same page where I was when I clicked the home button. It somehow remembers the last page I was at, and opens that page instead of the launcher activity. I added onDestroy() to onPause() on all the activities, but that didn't help either. </p>
  
  <p>I am not sure what code to add here, so I'm attaching my AndroidManifest. Thanks! Below are the three activities in the AndroidManifest.</p>
  
  <pre><code>  &lt;activity android:name="example.Activity1" android:label="MyApp" 
          android:configChanges="orientation" android:screenOrientation="portrait"&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:name="example.Activity2"
          android:configChanges="orientation"
          android:screenOrientation="portrait" &gt;
      &lt;/activity&gt;
      &lt;activity
          android:name="example.Activity3"
          android:configChanges="orientation"
          android:screenOrientation="portrait" &gt;
      &lt;/activity&gt;
  </code></pre>