[Android] User Interface

http://developer.android.com/intl/zh-CN/guide/topics/ui/index.html

1. Layout
   http://developer.android.com/intl/zh-CN/guide/topics/ui/declaring-layout.html
   http://developer.android.com/intl/zh-CN/guide/topics/ui/layout-objects.html
   
   • FrameLayout
   • LinearLayout
   • TableLayout
   • RelativeLayout
2. Menu
   http://developer.android.com/intl/zh-CN/guide/topics/ui/menus.html
   Types:
   
   • Options Menu
   • Context Menu
   • Sub Menu
3. Dialog
   http://developer.android.com/intl/zh-CN/guide/topics/ui/dialogs.html
   
   • AlertDialog
   • ProgressDialog
   • DatePickerDialog
   • TimePickerDialog
     
4. UI Event
   http://developer.android.com/intl/zh-CN/guide/topics/ui/ui-events.html
   -Event Listener:
     At first, must register event listener with View.set...Listener, such as viewObj.setOnClickListener, the event listerer contains following callback
   
   • Click/LongClick
   • Focus Change
   • Key
   • Touch
   • Create Context Menu
   -Event Handler:
   
   • onKeyDown
   • onKeyUp
   • onTrackBallEvent
   • onTouchEvent
   • onFocusChanged
     
5. Notify User
   http://developer.android.com/intl/zh-CN/guide/topics/ui/notifiers/index.html
   
   • Toast Notification
   • Satus Bar Notificaton
   • Dialog Notification
6. Build Custom Component
   http://developer.android.com/intl/zh-CN/guide/topics/ui/custom-components.html
   -View/ViewGroup:
   http://developer.android.com/intl/zh-CN/reference/android/widget/package-summary.html
   
   • Button/ToggleButton
   • TextView/AutoCompleteTextView
   • EditText
   • ListView
   • CheckBox
   • RadioButton/RadioGroup
   • Gallery
   • Spiner
   • ImageSwitcher
   • TextSwitcher
   • ProgressBar
   • ImageView/ImageButton
     
   • ScrollView
     
7. UI Design GuideLine
   http://developer.android.com/intl/zh-CN/guide/practices/ui_guidelines/index.html
   How to design good-looking UI:
   
   • Icon
   • Widget
   • Activity
   • Menu
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