Check and Install other application from other android
<p>I want to create small application which when I start this small application in main activity I want to check if other application for example "barcode" is installed on my phone.</p>

<ul>
<li>If yes I want to start application "barcode" </li>
<li>If no I want to install this application from google play.</li>
</ul>

<p>How I can do that?</p>
