Portable Android Studio

• Includes in-process desugaring to decrease compile time when using Java 8 language features. To try this preview feature, set android.enableD8.desugaring=true in your project’s gradle.properties file.
• In the Network Profiler, a new Request tab provides network request details.
• In the CPU Profiler, a new search feature allows you to highlight relevant trace results in Trace Pane. This feature is also available in the Memory Profiler to filter the results of memory allocations or heap dumps. To enter a search query, click the icon at the top-right corner of the pane and then click on the search box.
• In the CPU profiler Flame Chart pane, call stacks that include the search query are highlighted and moved to the left side of the chart.
• Known Issue: In the Top Down and Bottom Up CPU profiler charts, relevant search results are prioritized above others when a column is sorted in a descending order. However, this prioritization does not take place when columns are sorted in an ascending order.
• Known Issue: When pausing while entering a search query in the CPU profiler, the IDE updates the results with your query and disables the cursor within the search field. That is, you need to click into the search field again to continue typing.

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• Constraint Layout and New Layout Editor Bug fixes.
• Improvements to the interaction between Gradle 2.14.1 and Android Studio 2.2.
• Instant Run and Build Bug Fixes.
• Memory performance improvements.

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• In this release, we've completely turned off in-memory dexing by default. We've spent the last couple of previews trying to fine-tune it, but there are lingering issues which continues to affect users.
• This should hopefully make the builds work a lot better for many of you. (If things were already working well, you can continue with in-memory dexing by turning it on with android.dexOptions.dexInProcess=true.)
• We've also continued to fix various Instant Run scenarios; in particular, using APK splits on API 23 seems to trigger some platform bugs, so for now we've switched over to using multidex for coldswap for both Lollipop and Marshmallow.

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• The memory profiler has a new "analysis" feature where it can analyze a heap dump to look for known problems, such as leaked activities. To use this feature, open a heap dump and look for the Analyzer Tasks window on the right.
• In the analysis window you can press the Run button to perform and analysis, and then drill into the results; here's an example of a leaked activity.
• There are several new lint checks as well; here's one which warns you if you are attempting to override resources referenced from the manifest (where only a small set of resources are actually dynamically resolved).
• Overall there are a number of bug fixes, particularly in the editing area where we're working to polish code completion in resource and manifest files. For example, you can use short names in completion to custom views now.

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• Performance tools: The memory usage window is now included as a tab in the Android runtime window, and there is now a tab for graphing CPU usage as well.
• New "Captures" view which shows the various performance data files you've collected.
• BCP 47 support. As of Lollipop, Android supports 3 letter language codes (as well as 3 letter region codes, additional script types etc using a resource folder format based on BCP 47).

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• Gradle-based build support.
• Android-specific refactoring and quick fixes.
• Lint tools to catch performance, usability, version compatibility and other problems.
• ProGuard and app-signing capabilities.
• Template-based wizards to create common Android designs and components.
• A rich layout editor that allows you to drag-and-drop UI components, preview layouts on multiple screen configurations, and much more.

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