NoClassDefFoundError: android.support.v4.util.ArrayMap

Question

Getting this error on JellyBean:

01-11 18:26:52.030: E/AndroidRuntime(16517): FATAL EXCEPTION: main
01-11 18:26:52.030: E/AndroidRuntime(16517): java.lang.No         


        

Answer 1

Frequently, a problem regarding a missing android.support class means that you have an older version of the affected library, one from before the class in question was added. Unfortunately, the JavaDocs do a poor job of indicating which version of the support libraries added newer classes.

If you are using Android Studio, make sure that your support- dependencies are fairly recent, and that your compileSdkVersion matches the major version number of the dependency.

If you are using Eclipse, you will have to not only download the latest libraries from the SDK Manager, but then remove the old library from your Eclipse project and add in an up-to-date copy of the library from your SDK installation.