NoClassDefFoundError Android with ActionBarActivity

Question

I currently have an ActionBarActivity which always returns a NoClassDefFoundError. I\'ve read that it might be a problem with the ADT but I cannot

Answer 1

Just this morning, Google released Android 4.3. They also updated its support library that allows ActionBar to be implemented on lower versions. Just have to extend ActionBarActivity. See guidelines here and tutorial here.

Answer 2

Ended up using ActionBarSherlock instead and added a project reference under Project Properties as well as in the Build Path. Seems to have fixed all errors relating to my question.

Answer 3

I solved this problem like so, when you add the library make sure it does not have the android-support-v4 along with it (in libs folder of the library un-check android dependencies and android-support-v4), that's in the case where your project already have the android-support-v4, that's why you can't find class ActionBarActivity

Answer 4

I've got the same problem. I solved it getting the android-support-v7-appcompat.jar library.

See here http://developer.android.com/tools/support-library/setup.html#using-apis how to install it.

I recommend focus on "Adding libraries without resources" instead "Adding libraries with resources" for the sake of simplicity.

When you do it, don't forget to import the this library into your Activity Java source. You can do it declaring import android.support.v7.app.ActionBarActivity;

Answer 5

http://developer.android.com/tools/support-library/setup.html The "Adding libraries with resources" section may help since this is not in the most common v4 support library

include only android-support-v4.jar is not enough

Answer 6

This Link may help you. This library is located in the /extras/android/support/v7/appcompat/ directory. Include in eclipse and add as library. This will solve your problem.