By Shay Shmeltzer on May 03, 2013
If you are trying to deploy to an Android device with the new Oracle ADF Mobile 18.104.22.168 release there is a good chance that you'll run into a situation where your deployment will fail with the message -
Failed to locate the Google Cloud Messaging for Android Library file named "gcm.jar"
Don't worry this is quite easy to resolve. All you need to do is download and install the "Google Cloud Messaging for Android Library" from the "Extras" section of your Android SDK Manager application.
Your android environment now requires that part because the new Oracle ADF Mobile support notification through the Google Cloud Messaging.
Once you download that addition you should be able to deploy without any problems.