(The source code of the MP3 player that Mars always develops. This is an excellent case for getting started with Android and understanding common components
mp3Player\bin\mars\download\FileUtils.class
mp3Player\bin\mars\download\HttpDownloader.class
mp3Player\bin\mars\lrc\LrcProcessor.class
mp3Player\bin\mars\model\Mp3Info.class
mp3Player\bin\mars\mp3player\service\DownloadService$DownloadThread.class
mp3Player\bin\mars\mp3player\service\DownloadService.class
mp3Player\bin\mars\mp3player\service\PlayerService$UpdateTimeCallback.class
mp3Player\bin\mars\mp3player\service\PlayerService.class
mp3Player\bin\mars\mp3player\AppConstant$PlayerMsg.class
mp3Player\bin\mars\mp3player\AppConstant$URL.class
mp3Player\bin\mars\mp3player\AppConstant.class
mp3Player\bin\mars\mp3player\LocalMp3ListActivity.class
mp3Player\bin\mars\mp3player\MainActivity.class
mp3Player\bin\mars\mp3player\Mp3ListActivity.class
mp3Player\bin\mars\mp3player\PlayerActivity$BeginButton.class
mp3Player\bin\mars\mp3player\PlayerActivity$LrcMessageBroadcastReceiver.class
mp3Player\bin\mars\mp3player\PlayerActivity$PauseButton.class
mp3Player\bin\mars\mp3player\PlayerActivity$StopButton.class
mp3Player\bin\mars\mp3player\PlayerActivity.class
mp3Player\bin\mars\mp3player\R$attr.class
mp3Player\bin\mars\mp3player\R$drawable.class
mp3Player\bin\mars\mp3player\R$id.class
mp3Player\bin\mars\mp3player\R$layout.class
mp3Player\bin\mars\mp3player\R$string.class
mp3Player\bin\mars\mp3player\R.class
mp3Player\bin\mars\xml\Mp3ListContentHandler.class
mp3Player\bin\classes.dex
mp3Player\bin\mp3Player.apk
mp3Player\bin\resources.ap_
mp3Player\gen\mars\mp3player\R.java
.....)