Android ApiDemos示例解析(1)：创建ApiDemo示例
Android SDK中带有很多例子，其中ApiDemo详细介绍了Android平台主要API，分成了
App
Content
Graphics
Media
OS
Text
Views
几个大类，每个大类又分为几个小类，一共大约有200多个实例，涵盖了Android OS API的各个方面：下面是所有示例的列表：
| App/Activity/Animation |
| App/Activity/Custom Dialog |
| App/Activity/Custom Title |
| App/Activity/Dialog |
| App/Activity/Forwarding |
| App/Activity/Hello World |
| App/Activity/Persistent State |
| App/Activity/QuickContactsDemo |
| App/Activity/Receive Result |
| App/Activity/Redirection |
| App/Activity/Reorder Activities |
| App/Activity/Save & Restore State |
| App/Activity/SetWallpaper |
| App/Activity/Translucent |
| App/Activity/Translucent Blur |
| App/Activity/Wallpaper |
| App/Alarm/Alarm Controller |
| App/Alarm/Alarm Service |
| App/Device Admin |
| App/Dialog |
| App/Intents |
| App/Launcher Shortcuts |
| App/Menu/Inflate from XML |
| App/Notification/IncomingMessage |
| App/Notification/Notifying Service Controller |
| App/Notification/NotifyWithText |
| App/Notification/Status Bar |
| App/Preferences/1. Preferences from XML |
| App/Preferences/2. Launching preferences |
| App/Preferences/3. Preference dependencies |
| App/Preferences/4. Default values |
| App/Preferences/5. Preferences from code |
| App/Preferences/6. Advanced preferences |
| App/Search/Invoke Search |
| App/Search/Query Search Results |
| App/Service/Foreground Service Controller |
| App/Service/Local Service Binding |
| App/Service/Local Service Controller |
| App/Service/Messenger Service |
| App/Service/Remote Service Binding |
| App/Service/Remote Service Controller |
| App/Service/Service Start Arguments Controller |
| App/Text-To-Speech |
| App/Voice Recognition |
| Content/Assets/Read Asset |
| Content/Resources/Resources |
| Content/Resources/Styled Text |
| Content/Storage/External Storage |
| Graphics/AlphaBitmap |
| Graphics/AnimateDrawables |
| Graphics/Arcs |
| Graphics/BitmapDecode |
| Graphics/BitmapMesh |
| Graphics/BitmapPixels |
| Graphics/CameraPreview |
| Graphics/Clipping |
| Graphics/ColorFilters |
| Graphics/ColorMatrix |
| Graphics/Compass |
| Graphics/CreateBitmap |
| Graphics/Density |
| Graphics/Drawable/GradientDrawable |
| Graphics/Drawable/ShapeDrawable |
| Graphics/FingerPaint |
| Graphics/Layers |
| Graphics/MeasureText |
| Graphics/OpenGL ES/Compressed Texture |
| Graphics/OpenGL ES/Cube Map |
| Graphics/OpenGL ES/Frame Buffer Object |
| Graphics/OpenGL ES/GLSurfaceView |
| Graphics/OpenGL ES/Kube |
| Graphics/OpenGL ES/Matrix Palette Skinning |
| Graphics/OpenGL ES/OpenGL ES 2.0 |
| Graphics/OpenGL ES/Sprite Text |
| Graphics/OpenGL ES/Textured Triangle |
| Graphics/OpenGL ES/Touch Rotate |
| Graphics/OpenGL ES/Translucent GLSurfaceView |
| Graphics/PathEffects |
| Graphics/PathFillTypes |
| Graphics/Patterns |
| Graphics/Pictures |
| Graphics/Points |
| Graphics/PolyToPoly |
| Graphics/PurgeableBitmap/NonPurgeable |
| Graphics/PurgeableBitmap/Purgeable |
| Graphics/Regions |
| Graphics/RoundRects |
| Graphics/ScaleToFit |
| Graphics/SensorTest |
| Graphics/SurfaceView Overlay |
| Graphics/Sweep |
| Graphics/Text Align |
| Graphics/Touch Paint |
| Graphics/Typefaces |
| Graphics/UnicodeChart |
| Graphics/Vertices |
| Graphics/Xfermodes |
| Media/MediaPlayer |
| Media/VideoView |
| OS/Morse Code |
| OS/Sensors |
| OS/SMS Messaging |
| Text/Linkify |
| Text/LogTextBox |
| Text/Marquee |
| Views/Animation/3D Transition |
| Views/Animation/Interpolators |
| Views/Animation/Push |
| Views/Animation/Shake |
| Views/Auto Complete/1. Screen Top< |