Android 内核 + 框架 + 版本

%28operating_system%29

Update history

Android has seen a number of updates since its original release. These updates to the base operating system typically fix bugs and add new features. And generally, each update to the Android operating system is developed under a code name based on a dessert item.

1.1	Released 9 February 2009
1.5 (Cupcake) Based on Linux Kernel 2.6.27	On 30 April 2009, the official 1.5 (Cupcake) update for Android was released. There were several new features and UI updates included in the 1.5 update:[36] Ability to record and watch videos through camcorder mode Uploading videos to YouTube and pictures to Picasa directly from the phone A new soft-keyboard with text-prediction Bluetooth and support Ability to automatically connect to a Bluetooth headset within a certain distance New widgets and folders that can populate the Home screens Animated screen transitions
1.6 (Donut) Based on Linux Kernel 2.6.29	On 15 September 2009, the 1.6 (Donut) SDK was released. Included in the update were: An improved Android Market experience An integrated camera, camcorder, and gallery interface Gallery now enables users to select multiple photos for deletion Updated Voice Search, with faster response and deeper integration with native applications, including the ability to dial contacts Updated search experience to allow searching bookmarks, history, contacts, and the web from the home screen Updated technology support for /, , , and a engine Support for screen resolutions Speed improvements in searching and camera applications Gesture framework and GestureBuilder development tool Google free turn by turn navigation
2.0/2.1 (Eclair) Based on Linux Kernel 2.6.29	On 26 October 2009 the 2.0 (Eclair) SDK was released. Among the changes were: Optimized hardware speed Support for more screen sizes and resolutions Revamped UI New Browser UI and support New contact lists Better contrast ratio for backgrounds Improved Google Maps 3.1.2 support Built in flash support for Camera Digital Zoom MotionEvent class enhanced to track multi-touch events Improved virtual keyboard Bluetooth 2.1 Live Wallpapers The 2.0.1 SDK was released on 3 December 2009. The 2.1 SDK was released on 12 January 2010.
2.2 (Froyo) Based on Linux Kernel 2.6.32	On 20 May 2010 the 2.2 Frozen Yogurt (Froyo) SDK was released. Changes included: General Android OS speed, memory, and performance optimizations Additional application speed improvements courtesy of implementation Integration of 's into the Browser application Increased Microsoft Exchange support (security policies, auto-discovery, GAL look-up, calendar synchronization, remote wipe) Improved application launcher with shortcuts to Phone and Browser applications USB tethering and Wi-Fi hotspot functionality Added an option to disable data access over mobile network Updated Market application with batch and automatic update features Quick switching between multiple keyboard languages and their dictionaries Voice dialing and contact sharing over Bluetooth Support for numeric and alphanumeric passwords Support for file upload fields in the Browser application Browser can now display animated GIFs (instead of just the first frame) Support for installing applications to the expandable memory 10.1 support
2.3 (Gingerbread) Based on Linux Kernel 2.6.33 or .34	Scheduled for Q4 2010 launch. Confirmed new features: Support for video playback Improved functionalities Improved social networking features Unconfirmed new features: Android Market music store Media streaming from PC library Revamped UI Support for bigger screens with up to (1366×768) resolution New 3D Games support including new Marketplace area for gaming Use of for /system/bin/sh Support for video calls Support for image files Support for
? (Honeycomb)	Scheduled for 2011 launch. Feature list started with features that won't make the cut-off for Gingerbread
? (Ice Cream)

[] Features