Getting Noclassdeffounderror With Google Cloud Messaging (gcm) On Nexus 4

I have the gcm.jar in my classpath, so eclipse compiles the project but it fails on my Nexus 4 device with 02-24 11:52:12.645: E/AndroidRuntime(30240): FATAL EXCEPTION: main 02-24

Solution 1:

I have the gcm.jar in my classpath

It needs to be in your project's libs/ directory. Do not just manipulate the Eclipse build path manually -- that will allow you compile against the JAR but does not ship the JAR with your APK. Putting the JAR in libs/ does both.