The source code of nearly Android projects covers every field of Android development)

Android PDF Reader http://sourceforge.net/projects/andpdf/files/
Accounting tools onmymeans http://sourceforge.net/projects/onmymeans/develop
Android battery monitoring Android dog http://sourceforge.net/projects/andbatdog/
RSS reader Android RSS http://code.google.com/p/android-rss/
Android PDF Reader droidreader http://code.google.com/p/droidreader/
Android scripting environment http://code.google.com/p/android-scripting/
Android games Android shapes http://sourceforge.net/projects/shapes/
Android json rpc http://code.google.com/p/android-json-rpc/
Android VNC http://code.google.com/p/android-vnc/
Meizu M8 Android transplantation M8 Android http://code.google.com/p/m8-android-kernel/
Android game amazed http://code.google.com/p/apps-for-android/
Helloworld goes mobile http://sourceforge.net/projects/helloworldgm/ for Android
Mobile chat Program Android jchat http://code.google.com/p/jchat4android/
GPS track recording mytracks http://code.google.com/p/mytracks/ for Android
Android chess game honzovy achy http://sourceforge.net/projects/honzovysachy/
Android travel recording software andtriplog http://sourceforge.net/projects/andtriplog/
Music player ambient http://sourceforge.net/projects/ambientmp/
Android client k9mail http://code.google.com/p/k9mail/
Multi-platform application development library quickconnect http://sourceforge.net/projects/quickconnect/
Gphone Air Combat Game http://code.google.com/p/wireless-apps/
Android photo mini software panoramio http://code.google.com/p/apps-for-android/.
I-jetty http://code.google.com/p/i-jetty/
Android games divideandconquer http://code.google.com/p/apps-for-android/
Android global time androidglobaltime http://code.google.com/p/apps-for-android/
Android 2D game engine Android angle http://code.google.com/p/angle/
Android Ruby http://code.google.com/p/android-ruby/
Android-N810 http://sourceforge.net/projects/android-n810/
SMS application of Android Ecclesia http://sourceforge.net/projects/ecclesia
JXTA client peerdroid http://code.google.com/p/peerdroid/ on Android platform
Android game engine libgdx http://code.google.com/p/libgdx/
Android photos small software photostream http://code.google.com/p/apps-for-android/
Alien3d logo Android 3D Game Engine alien3d http://code.google.com/p/alien3d/
Winamp remote Android server http://sourceforge.net/projects/winampdroid
Android Facebook client andrico http://code.google.com/p/andrico/
Android applications manager http://sourceforge.net/projects/aam/
Java 3D graphics engine catcake http://code.google.com/p/catcake/
Android-gcc-objc2-0 http://code.google.com/p/android-gcc-objc2-0/
Jiugongge Sudoku game opensudoku http://code.google.com/p/opensudoku-android/
Android ringtone extension tool ringsextended http://code.google.com/p/apps-for-android/
Javaeye Android client http://code.google.com/p/javaeye-android-client/
Remotedroid http://code.google.com/p/remotedroid/
Android games clickin2dabeat http://code.google.com/p/apps-for-android/
TCM doctor Assistant Information System ZZ-doctor Co., http://code.google.com/p/zz-doctor/.
Facebook connect for Android http://code.google.com/p/fbconnect-android/
Android smspopup http://code.google.com/p/android-smspopup/
Freetts-android http://sourceforge.net/projects/freettsandroidi
Foursquare.com client foursquar http://code.google.com/p/foursquared/
Barcode Scanner Android pc_cr http://code.google.com/p/android-pcbcr/