Thanks Mahesh for sharing valuable and useful concept.
Somnath Kadam
41

ProGuard doesn’t obfuscate String , as mentioned in its FAQ. If ou want you can try this paid services, DexGuard, Stringer Java Obfuscator. Fore simple try I encounter with this link, it is tricky http://stackoverflow.com/questions/22949801/simple-hiding-obfuscation-of-strings-in-apk