Zxing条形码，二维码，解码工具 Retire Symbian port - Retire C# port - Improved PDF417 decoding, including macro PDF417 - Added Aztec and Data Matrix encoders - Added RSS Expanded decoder - Java, C++ and iPhone build system updates, including migration to Maven for most Java modules - Many small fixes and improvements - Many small updates to the Android app, Barcode Scanner, including rare bug fixes and translation updates. The 2.2 release corresponds substantially to v4.3.2. - Update zxing.org web-based decoder for Amazon Elastic Beanstalk (and redeployed there) - Many ports of Java updates to C++ and C# ports