How to add interstitial ad to you android app?

This tutorial shows how to create and get an ID for Interstitial ad.

1.) Log in or sign up https://www.google.com/admob

2.) Select You Project and select "Ad units" (1). Click button "Add ad unit" (2)

3.) Click -> "Select" (1) under Interstitial block

4.) Enter you "Ad unit name" (1) and click -> "Create ad unit" (2)

5.) Copy ad unit id (2) and click -> "Done"

6.) Paste you interstitial ad unit id to you strings.xml (Android App) file, constant "interstitial_ad_unit_id"