title: Hide application in android device
body: <p>I want to hide an application from user once it is installed. And I know
  removing this line from manifest will work</p>
  <pre><code> &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
  </code></pre>
  <p>but how can I use that application because I cann't see it in app list. Any idea ? Thanks.</p>