If you upgrade to El Capitan and run into an issue with packaging or launching for Android and see this in the log:
you can fix this by installing this package: https://support.apple.com/kb/DL1572?locale=en_US
Code:
MainFrameActions: Packaging (Android (ETC1)): Error: JAVA_HOME is not defined correctly. MainFrameActions: Packaging (Android (ETC1)): We cannot execute /System/Library/Frameworks/JavaVM.framework/Home/bin/java MainFrameActions: Packaging (Android (ETC1)): BuildCommand.Execute: ERROR: BUILD FAILED
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