What causes android exception “You need to use a Theme.AppCompat theme (or descendant) with this activity.”

Question

I am attempting to try out the new Material Theme in Android.

I am currently stuck with this exception

03-06 09:35:50.177: D/AndroidRuntime(30607): S         


        

Answer 1

You are attempting to use a feature (from the design library, for example) which was introduced after your target sdk. Therefore, you need to use a couple of libraries (design and appcompat), one of which is the AppCompat Theme (backwards app compatibility).

In your Manifest file, include in your application declaration

android:theme="@style/Theme.AppCompat"

Rebuild and your problem should be solved.