Last night, the stable release of Android Studio 2.2 was released. Developers talk about 20+ changes: design, development, assembly and testing. Of significant changes:
Design
New layout editor
Constraint Layout
Very much expected feature by me. Read more about what this can be read in this article. ')
Development
Improved C ++ support. Now you can use CMake or ndk-build to build a C ++ project using Gradle. And many other changes.
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Assembly
Instant Run Improvements
APK Analyzer
Build cache (Experimental feature) : To try add android.enableBuildCache = true in gradle.properties
Testing
Virtual sensors in the emulator
Espresso Test Recorder (Beta)
As the name implies: now you can simply write down your actions and go to do more interesting things.