Google Admob integration to webview app!

Hi. I have a project with mobile template and I did a webview app with this for Android. Users can sign up and see all contents. But they need earn point for doing something. So I want to use Google Admob for that. I will create a page on my mobile project in webview. And when a user click this, an advertisement will be shown. If users click this ad and download the app, they will earn 100 points for to use in the system (Not for click, only for download). Actually I don't know it is possible or not. If yes, I'm waiting for your bids. Thanks.