Android今1.5版本
转自：http://developer.android.com/sdk/preview/features.html



The Android 1.5 platform introduces many new features for users and developers. The list below provides an overview of the changes.
User interface refinements

    * System-wide:
          o Refinement of all core UI elements
          o Animated window transitions (off by default)
          o Accelerometer-based application rotations
    * UI polish for:
          o In-call experience
          o Contacts, Call log, and Favorites
          o SMS & MMS
          o Browser
          o Gmail
          o Calendar
          o Email
          o Camera & Gallery
          o Application management

Performance improvements

    * Faster Camera start-up and image capture
    * Much faster acquisition of GPS location (powered by SUPL AGPS)
    * Smoother page scrolling in Browser
    * Speedier GMail conversation list scrolling

New features

    * On-screen soft keyboard
          o Works in both portrait and landscape orientation
          o Support for user installation of 3rd party keyboards
          o User dictionary for custom words
    * Home screen
          o Widgets
                + Bundled home screen widgets include: analog clock, calendar, music player, picture frame, and search
          o Live folders
    * Camera & Gallery
          o Video recording
          o Video playback (MPEG-4 & 3GP formats)
    * Bluetooth
          o Stereo Bluetooth support (A2DP and AVCRP profiles)
          o Auto-pairing
          o Improved handsfree experience
    * Browser
          o Updated with latest Webkit browser & Squirrelfish Javascript engines
          o Copy 'n paste in browser
          o Search within a page
          o User-selectable text-encoding
          o UI changes include:
                + Unified Go and Search box
                + Tabbed bookmarks/history/most-visited screen
    * Contacts
          o Shows user picture for Favorites
          o Specific date/time stamp for events in call log
          o One-touch access to a contact card from call log event
    * System
          o New Linux kernel (version 2.6.27)
          o SD card filesystem auto-checking and repair
          o SIM Application Toolkit 1.0
    * Google applications
          o View Google Talk friends' status in Contacts, SMS, MMS, GMail, and Email applications
          o Batch actions such as archive, delete, and label on Gmail messages
          o Upload videos to Youtube
          o Upload photos on Picasa

New APIs and developer tools

    * UI framework
          o Framework for easier background/UI thread interaction
          o New SlidingDrawer widget
          o Horizontal ScrollView widget
    * Home Screen framework
          o APIs for creating secure home screen widgets
          o APIs for populating live folders with custom content
    * Media framework
          o Raw audio recording and playback APIs
          o Interactive MIDI playback engine
          o Video recording APIs for developers (3GP format)
          o Video and photo sharing Intents
          o Media search Intent
    * Input Method framework
          o Text prediction engine
          o Ability to provide downloadable IMEs to users
    * Speech recognition framework
          o Support for using speech recognition libraries via Intent
    * Misc API additions
          o LocationManager - Applications can get location change updates via Intent
          o WebView - Touch start/end/move/cancel DOM event support
          o SensorManager - redesigned sensor APIs
          o GLSurfaceView - convenience framework for creating OpenGL applications
          o Broadcast Intent for app update install succeeded - for smoother app upgrade experience
    * Developer tools
          o Support for multiple versions of Android in a single SDK installation
          o Improved JUnit support in ADT
          o Easier application performance profiling