The digitalcoin Android Wallet was the first wallet to be created by forking the bitcoin-wallet using a simplified code structure that kept all coin parameters in one file (with the exception of the difficulty retarget algorithms).
The source code is currently found here:
https://github.com/HashEngineering/digitalcoinj
(forked from https://code.google.com/p/bitcoinj – v0.11)
https://github.com/HashEngineering/digitalcoin-wallet
(forked from https://github.com/schildbach/bitcoin-wallet)
This app is now on Google Play: https://play.google.com/store/apps/details?id=hashengineering.digitalcoin.wallet
Forum posts:http://digitalcoin.co/forums/index.php/topic,964.0.html
Previous Articles:
http://majesti.co/cryptonerd/digitalcoin-android-wallet-available-now/