1The API Demos application includes a variety of small applications 2that illustrate the use of various Android APIs. It includes samples of: 3 - Notifications 4 - Alarms 5 - Progress Dialogs 6 - Intents 7 - Menus 8 - Search 9 - Persistent application state 10 - Background Services 11 - App Widgets 12 - Voice Recognition 13 - And many many more... 14 15Api demos is designed to use the compatibility library "android-support-v4.jar". 16It is available through the SDK Updater in the "Android Compatibility package". 17Once downloaded, copy the jar file into the ApiDemos project libs/ folder. 18(If using Eclipse, add it manually to the project build path).