The following classes could not be instantiated: - com.google.android.gms.plus.PlusOneButton

Question

I am following this tutorial https://developers.google.com/+/mobile/android/recommend to integrate +1 button in my app.

As soon as I put this code in xml I get error

Answer 1

Add compile 'com.google.android.gms:play-services-plus:10.0.1' to your app's gradle