Android 2.3 Technologies

Media Framework

• New media framework fully replaces OpenCore, maintaining all previous codec/container support for encoding and decoding.
• Integrated support for the VP8 open video compression format and the WebM open container format
• Adds AAC encoding and AMR wideband encoding
• 

Linux Kernel

• Upgraded to 2.6.35

Networking

• SIP stack, configurable by device manufacturer
• Support for Near Field Communications (NFC), configurable by device manufacturer
• Updated BlueZ stack

Dalvik runtime

• Dalvik VM:
  • Concurrent garbage collector (target sub-3ms pauses)
  • Adds further JIT (code-generation) optimizations
  • Improved code verification
  • StrictMode debugging, for identifying performance and memory issues
• Core libraries:
  • Expanded I18N support (full worldwide encodings, more locales)
  • Faster Formatter and number formatting. For example, float formatting is 2.5x faster.
  • HTTP responses are gzipped by default. XML and JSON API response sizes may be reduced by 60% or more.
  • New collections and utilities APIs
  • Improved network APIs
  • Improved file read and write controls
  • Updated JDBC
• Updates from upstream projects:
• OpenSSL 1.0.0a
• BouncyCastle 1.45
• ICU 4.4
• zlib 1.2.5
• Reference:http://developer.android.com
• For more information about the new developer APIs, see the Android 2.3 version notes and the API Differences Report