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Android Developers
Android Studio
Preview
Release Updates
Android Studio 4.2 Beta 2 available
Monday, December 14, 2020
Android Studio 4.2 Beta 2 is now available in the Beta channel.
If you have Android Studio set up to receive updates on the
Beta channel
, you can get the update by choosing
Help > Check for Updates
(
Android Studio > Check for Updates
on macOS). Otherwise, you can
download it here
.
For information on new features and changes in all preview builds of Android Studio 4.2, see the
Android Studio Preview release notes
. For details of bugs fixed in each preview release, see previous entries on this blog.
We greatly appreciate your bug reports, which help us to make Android Studio better. If you encounter a problem, let us know by
reporting a bug
. Note that you can also
vote for an existing issue
to indicate that you are also affected by it.
General Fixes
Lint
Issue #174480831
: textOutput(“stderr”) now creating a file
Shrinker (R8)
Issue #172999904
: R8 Slowdown and Timeout Due to number of proguard rules
Issue #173184123
: Public tracking bug for b/172895918 - R8 crashing with java.lang.NullPointerException
Issue #173598082
: R8 build failure: Invalid descriptor char 'N'
Layout Editor
Issue #146702651
: layout_constraintDimensionRatio value error
Issue #173198421
: Request to insert missing font sizes into textview
Navigation Editor
Issue #172694913
: AS 4.2 performs incorrect case mapping for camelCase graph IDs when referencing Directions classes
Code Editor
Issue #173554093
: JNI support is incorrectly handling inner class names
New Code/Templates
Issue #163156198
: Activity Wizard doesn't create files
Issue #172268020
: Unable to create modules in Android Studio
Android Gradle Plugin
Issue #173770818
: Having tests only under `androidTest/kotlin` will not run any integration tests
Issue #172695848
: Spurious error about android:extractNativeLibs
Issue #174576241
: Kotlin DSL: packagingOptions.exclude broken
Emulator
Issue #170657960
: Embedded emulator on Windows never closes the emulator process
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