Stop uninstallation of application
<p>i create an app and install it on phone. now i want to add a feature that my app should not uninstall from the phone. so i think if one of the following issues could be solved</p>

<ol>
<li>is there anyway to stop the user from uninstall the app?   </li>
<li>is it possible , if user try to uninstall the app we get a message? </li>
<li>is it possible , if user try to uninstall the app it should prompt for a password ? </li>
<li>any other way to know that app got uninstalled?</li>
</ol>

<p>Please guide me in this regard
thanks in advance</p>
