I was just wondering if there was anyway to add a Google +1 button inside my Android app. I have seen a +1 on the Android Market so I would think there would be some way to
To add google plus one, first you need to enable the API in developer console, then register your app with package name, then include the same in your app.
Here is the full example with detailed explanation.
http://www.feelzdroid.com/2014/09/google-plusone-1-button-in-android-application-integration-guide.html