How to restrict Android device to not open some specific site e.g.youtube, facebook
<p>I am writing an application for Android devices, Now I want to implement the functionality that if my application is installed on the device  than it is restricted to open youtube or facebook. </p>

<p>Because this application is for employees and my client do not want that his emplyees waste their time in youtube or facebook. I tried to find some help on google but received no good source. </p>

<p>thanks</p>
