android api demo 每日一例：api demo 概要
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 |
Views/Auto Complete/2. Screen Bottom |
Views/Auto Complete/3. Scroll |
Views/Auto Complete/4. Contacts |
Views/Auto Complete/5. Contacts with Hint |
Views/Auto Complete/6. Multiple items |
Views/Buttons |
Views/Chronometer |
Views/Controls/1. Light Theme |
Views/Controls/2. Default Theme |
Views/Custom |
Views/Date Widgets/1. Dialog |
Views/Date Widgets/2. Inline |
Views/Expandable Lists/1. Custom Adapter |
Views/Expandable Lists/2. Cursor (People) |
Views/Expandable Lists/3. Simple Adapter |
Views/Focus/1. Vertical |
Views/Focus/2. Horizontal |
Views/Focus/3. Circular |
Views/Focus/4. Internal Selection |
Views/Gallery/1. Photos |
Views/Gallery/2. People |
Views/Grid/1. Icon Grid |
Views/Grid/2. Photo Grid |
Views/ImageButton |
Views/ImageSwitcher |
Views/ImageView |
Views/Layout Animation/1. Grid Fade |
Views/Layout Animation/2. List Cascade |
Views/Layout Animation/3. Reverse Order |
Views/Layout Animation/4. Randomize |
Views/Layout Animation/5. Grid Direction |
Views/Layout Animation/6. Wave Scale |
Views/Layout Animation/7. Nested Animations |
Views/Layouts/Baseline/1. Top |
Views/Layouts/Baseline/2. Bottom |
Views/Layouts/Baseline/3. Center |
Views/Layouts/Baseline/4. Everywhere |
Views/Layouts/Baseline/5. Multi-line |
Views/Layouts/Baseline/6. Relative |
Views/Layouts/Baseline/Nested Example 1 |
Views/Layouts/Baseline/Nested Example 2 |
Views/Layouts/Baseline/Nested Example 3 |
Views/Layouts/LinearLayout/1. Vertical |
Views/Layouts/LinearLayout/10. Background Image |
Views/Layouts/LinearLayout/2. Vertical (Fill Screen) |
Views/Layouts/LinearLayout/3. Vertical (Padded) |
Views/Layouts/LinearLayout/4. Horizontal |
Views/Layouts/LinearLayout/5. Simple Form |
Views/Layouts/LinearLayout/6. Uniform Size |
Views/Layouts/LinearLayout/7. Fill Parent |
Views/Layouts/LinearLayout/8. Gravity |
Views/Layouts/LinearLayout/9. Layout Weight |
Views/Layouts/RelativeLayout/1. Vertical |
Views/Layouts/RelativeLayout/2. Simple Form |
Views/Layouts/ScrollView/1. Short |
Views/Layouts/ScrollView/2. Long |
Views/Layouts/ScrollView/3. Internal Selection |
Views/Layouts/TableLayout/01. Basic |
Views/Layouts/TableLayout/02. Empty Cells |
Views/Layouts/TableLayout/03. Long Content |
Views/Layouts/TableLayout/04. Stretchable |
Views/Layouts/TableLayout/05. Spanning and Stretchable |
Views/Layouts/TableLayout/06. More Spanning and Stretchable |
Views/Layouts/TableLayout/07. Column Collapse |
Views/Layouts/TableLayout/08. Toggle Stretch |
Views/Layouts/TableLayout/09. Toggle Shrink |
Views/Layouts/TableLayout/10. Simple Form |
Views/Layouts/TableLayout/11. Gravity |
Views/Layouts/TableLayout/12. Cell Spanning |
Views/Lists/1. Array |
Views/Lists/10. Single choice list |
Views/Lists/11. Multiple choice list |
Views/Lists/12. Transcript |
Views/Lists/13. Slow Adapter |
Views/Lists/14. Efficient Adapter |
Views/Lists/2. Cursor (People) |
Views/Lists/3. Cursor (Phones) |
Views/Lists/4. ListAdapter |
Views/Lists/5. Separators |
Views/Lists/6. ListAdapter Collapsed |
Views/Lists/7. Cursor (Phones) |
Views/Lists/8. Photos |
Views/Lists/9. Array (Overlay) |
Views/Progress Bar/1. Incremental |
Views/Progress Bar/2. Smooth |
Views/Progress Bar/3. Dialogs |
Views/Progress Bar/4. In Title Bar |
Views/Radio Group |
Views/Rating Bar |
Views/ScrollBars/1. Basic |
Views/ScrollBars/2. Fancy |
Views/ScrollBars/3. Style |
Views/Seek Bar |
Views/Spinner |
Views/Tabs/Content By Factory |
Views/Tabs/Content By Id |
Views/Tabs/Content By Intent |
Views/TextSwitcher |
Views/Visibility |
Views/WebView |
不同 sdk 版本带的 sample 的所有项目的组织结构略有不同
android-7
ApiDemos
BluetoothChat
ContactManager
content_hash.properties
CubeLiveWallpaper
GestureBuilder
Home
JetBoy
LunarLander
MultiResolution
NotePad
SampleSyncAdapter
SearchableDictionary
SkeletonApp
Snake
SoftKeyboard
source.properties
Wiktionary
WiktionarySimple
android-8
android-10
android-11
android-12
android-13
android-14
android-15
android-16
android-17
android-18
android-19
background
connectivity
content
input
legacy
media
renderscript
security
sensors
testing
ui