Existing java bytecode obfuscators should work. The one I worked on does. The Dalvik compiler translates the .class into dalvik bytecode. You can obfuscate t

Existing java bytecode obfuscators should work. The one I worked on does. The Dalvik compiler translates the .class into dalvik bytecode. You can obfuscate the java bytecode and the obfuscation survives the translation layer.