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（自备梯子）： https://sites.google.com/a/android.com/tools/download/studio/builds/2-2-preview-4 Android Studio 2.2 Preview 4 发布下载地址
