Android Studio 2.2.1 发布了。 更新内容：
修复： An Updated JDK to address multiple issues with MacOS Sierra Improves the Native (C++) Development experience by resolving multiple critical bugs Several Instant Run and Gradle Bug Fixes Multiple issues in data binding
新特性： Improved Reporting for Instant Run Issues: Some
of you have been reporting issues with Instant Run, but it has been
hard for us reproduce them. We have added extra logging to help us
investigate Instant Run issues. This extra logging is OFF by default,
and to enable it, go to Settings or Preferences, go to Build, Execution, Deployment > Instant Run, and check Log extra info is check. Next time you encounter an Instant Run issues, you can report it by clicking Help > Report Instant Run Issue...
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