Android 4.1 Jelly Bean ~ TechnoMoto

Android 4.1 Jelly Bean

Google announced Android 4.1 (Jelly Bean) at the Google I/O conference on June 27, 2012. Based on Linux kernel 3.0.31, Jelly Bean was an incremental update with the primary aim of improving the functionality and performance of the user interface. The performance improvement involved "Project Butter", which uses touch anticipation, triple buffering, extended vsync timing and a fixed frame rate of 60 fps to create a fluid and "buttery-smooth" UI. Android 4.1 Jelly Bean was released to the Android Open Source Project on July 9, 2012, and the Nexus 7 tablet, the first device to run Jelly Bean, was released on July 13, 2012.

Version: 4.1 Release date: July 9, 2012

Smoother user interface:
Vsync timing across all drawing and animation done by the Android framework, including application rendering, touch events, screen composition and display refresh
Triple buffering in the graphics pipeline
Enhanced accessibility
Bi-directional text and other language support
User-installable keyboard maps
Expandable notifications
Ability to turn off notifications on an application-specific basis
Shortcuts and widgets can automatically be re-arranged or re-sized to allow new items to fit on home screens
Bluetooth data transfer for Android Beam
Tablets with smaller screens now use an expanded version of the interface layout and home screen used by phones.
Improved camera application
Multichannel audio
USB audio (for external sound DACs)
Audio chaining (also known as gapless playback)
Ability for other launchers to add widgets from the application drawer without requiring root access

Version: 4.1.1 Release date: July 23, 2012

Fixed a bug on the Nexus 7 regarding the inability to change screen orientation in any application

Version: 4.1.2 Release date: October 9, 2012

Lock/home screen rotation support for the Nexus 7
One-finger gestures to expand/collapse notifications
Bug fixes and performance enhancements