"The Android 1.5 platform will include many improvements and new features for users and developers. Additionally, the SDK itself introduces several new capabilities that enable you to develop applications more efficiently for multiple platform versions and locales. See the Android 1.5 Highlights document for a list of new features and improvements.

The new SDK has a different component structure than earlier SDK releases. This means:

* The new SDK does not work with older Eclipse plugins (ADT 0.8)
* The old SDKs (1.1 and earlier) do NOT work with this new Eclipse plugin (ADT 0.9)

Note: This is an early look SDK only. The tools and documentation are not complete. The API reference documentation for the early look SDK is provided only in the downloadable SDK package — documentation for this early look release is not available at http://developer.android.com. To access the API reference for the early look SDK, see the documentation in your SDK's docs/reference/ directory.

Additionally, note that the APIs provided in this SDK are subject to change until the final Android 1.5 SDK is released. You should not compile any applications for distribution using this version of the SDK. If you do so, your applications may not function properly when deployed to Android-powered devices running the final Android 1.5 platform. Please wait for the final Android 1.5 SDK before distributing applications built on the Android 1.5 system image."

Download the Android 1.5 Early Look SDK


Android 1.5 Highlights

April 2009 - from 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

Portions of this page are reproduced from work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

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apple2183 wrote:hi
for more information
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