Android Studio 2.2 Preview 4 发布了，该版本解决了一些大Bugs，以及增加了一些小功能特性。开发者预览版本或者测试版本Google将采用黄色Android Studio图标，标准版本继续采用绿色的图标。
以下是该版本值得关注的内容：
Instant Run
Many bug fixes, we are working hard to address all reproducible issues. Please continue to file them.
Lint
Bug Fixes for 209384, 213630, 212479
Updated JDK for Mac
Mac JDK updated to include all fixes from Jetbrains over the last month or so. We hope that it fixes crashes like https://code.google.com/p/android/issues/detail?id=213742.
ConstraintLayout Editor
Various bug fixes
Pan & zoom panel is now a floating window accessible from the toolbar
Importing VectorDrawable from Photoshop files
Strokes are now supported
Clipping masks are now supported
Shape operations are now supported (merge, subtract, intersect and exclude overlapping)
Fill opacity is now supported
XML output optimized for size
Photoshop files support
Improved support for CMYK and Lab images
Color management
Improved color management on OS X
Firebase Plugin
Bug Fixes
Improved Directions.
下载地址：
https://sites.google.com/a/android.com/tools/download/studio/builds/2-2-preview-4
来自:开源中国社区
