Release updates archive

Emulator 30.0.15 Canary

Friday, May 29, 2020

We've seen issues running the Windows emulator with Riot Vanguard active. The Windows emulator now detects Vanguard anti-cheat and pops up a warning message if Vanguard is detected.

The emulator now prints a warning if unsupported options are passed to -prop (Only qemu.* props are supported).

When using the Linux emulator embedded in Studio, we found that if this is done through Chrome Remote Desktop, there is a bug where XDG_RUNTIME_DIR is not set and may cause the embedded emulator to fail to appear due to the emulator discovery files being placed in XDG_RUNTIME_DIR.

https://bugs.chromium.org/p/chromium/issues/detail?id=1077449
As a workaround, the emulator now falls back to using discovery files in a possibly-different directory that is based on user UID (/run/user/<uid>).

Emulator icons updated to reflect Studio 4.1 branding.

When building the emulator on Windows, there should be less chance of seeing flaky failures to write to files. (Windows build instructions: https://android.googlesource.com/platform/external/qemu/+/refs/heads/emu-master-dev/android/docs/WINDOWS-DEV.md)

gRPC endpoint now supports sending SMS to the device.

Updated WebRTC libraries to M83.

darwinn pipe endpoint has been removed.

When hw.gltransport=virtio-gpu-pipe, performance is improved by not spinning on the host in transfers from host to guest.

ARM64 host support

Linux emulator source code now supports cross compilation from x86_64 to arm64 hosts, enabling running arm64 system images with KVM virtualization and host side rendering. Currently, only -gpu swiftshader_indirect (Swiftshader arm64 host rendering) is supported, but a compatible set of host GPU libEGL/libGLESv2/libGLESv1_CM libraries may also be used via replacing the libraries in lib64/gles_swiftshader with them and then relaunching with -gpu swiftshader_indirect. Snapshots may also not be working (add -no-snapshot to the command line). Instructions:

pip install absl-py

pip install urlfetch

sudo apt-get install crossbuild-essential-arm64

mkdir emu

cd emu

repo init -u https://android.googlesource.com/platform/manifest -b emu-master-dev --depth=1

repo sync -qcj 12

cd external/qemu

python android/build/python/cmake.py --noqtwebengine --noshowprefixforinfo --target linux_aarch64

Android Studio 4.0 available in the Stable channel

Thursday, May 28, 2020

download it hererelease notes

Android Studio 4.1 Canary 10 available

Tuesday, May 26, 2020

Canary or Dev channelHelp > Check for UpdatesAndroid Studio > Check for Updatesdownload it hereUpdated themes and styles in new project templatesAndroid Studio templates in the Create New Project dialog now use Material Design Components and updated themes and styles guidance by default. To learn more, see the release notes. Prevent new and existing databases from closingKeep database connections open To learn more, see the release notes. General Fixes Android Gradle Plugin

Issue #154388196: Gradle configuration fails on project with several modules when AGP is applied using plugin management

Issue #155318103: Post-tasks variant API: Adding manifest placeholders is broken and breaks the build from AGP 3.x to AGP 4.1.0-alpha08

Issue #145944388: Compile error because R.java limit (error: too many constants)

C++ Debugger

Issue #120865679: App crash (segfault) when debugging JNI functions with local jstring reference

Code Analysis

Issue #155772516: Resource bundle redefinition for plugin 'org.jetbrains.android'. Old value: messages.AndroidBundle

Database Inspector

Issue #156131130: The empty database warning does not have the right colors in Dark mode

Issue #156134721: Inspector annotator is accessing databases from wrong thread

Databinding

Issue #150397979: viewBinding issue with Android Studio 3.6 Stable

Emulator

Issue #155825352: Diagnostic warnings are shown as error messages

Espresso Recorder

Issue #144367566: Record Espresso Test Generates Buggy Tests

Issue #149687900: testrecorder.ui.RecordingDialog should not initialize constants from network

Import/Sync

Issue #152889824: Support Variant switching without running Gradle (like switching build variants)

Issue #150397855: local.properties file generated in buildSrc folder

Layout Editor

Issue #139716861: Studio freezes when clicking a Button view in the design surface

New Code/Templates

Issue #79671576: Bug: crazy focus changes upon activity creation

Project Structure

Issue #149773516: Migrating Android Studio 3.5 Project to 3.6 rc03 causes Unsupported modules detected error

Project View

Issue #150933937: Renaming a dynamic feature module in Android Studio doesn't update the base build.gradle

Resources

Issue #142004503: "Remove Unused Resources" for view binding missed method reference syntax (e.g. `LayoutBinding::inflate`)

Issue #152432842: Navigate to symbol fails to find any symbols

What's New Assistant

Issue #154924753: What's New Assistant title fonts are too small

Android Studio Preview release notesreporting a bugvote for an existing issue

Emulator 30.0.14 Canary

Thursday, May 21, 2020

Added support for hinge sensors for foldable devices. This requires a future R system image and AVD configuration.

To make it easier to save vertical screen space, we've added an option to hide the device frame for the current AVD in Extended Controls > Settings. To globally hide device frames for all AVDs, we've made available the NoDeviceFrame feature flag, which can be activated via launching the emulator from the command line with -feature NoDeviceFrame, or to lock it in, adding NoDeviceFrame = on to ~/.android/advancedFeatures.ini (Create this file if it doesn't exist already).

Upgraded toolchain / build to C++17.

Since our copy of the D3D9 ANGLE renderer was removed a few versions ago, we now also auto switch users who were on that renderer to D3D11 ANGLE if it was selected in the UI preferences.

Emulator now correctly reports boot time coming from a device reboot.

Embedded emulator: Devices with rounded corners/notches now properly change their layout to make room for the corners/notch. This requires a cold boot of those emulators.

Added more debug logging for when OpenGLES emulation fails to initialize.

Vulkan: We've reverted back to using the prebuilt loader as favoring the system Vulkan loader caused issues in some setups; will figure out a better solution.

Emulator 30.0.13 Canary

Friday, May 15, 2020

Emulator 30.0.13 is now available in the Canary and Dev channels. Changes:

Linux: In the case where there are insufficient KVM permissions, the emulator now prints debugging instructions more promptly.

Fixed issue when using Vulkan external memory where it could have allowed mismatching memory type indices on the host on import. More details

Fixed issue in emulation of GL_ALIASED_POINT_SIZE_RANGE where the enum was not supported on the host.

Fixed issue where the emulator could not boot recent system images with no acceleration.

Fixed memory corruption / crash on start from a boot-completed detector.

Linux: We now prioritize using the system Vulkan loader (libvulkan.so/libvulkan.so.1) over the packaged Vulkan loader.

Warning: This may require you to upgrade your system Vulkan loader if it is older than the packaged one, or the guest may not be able to use Vulkan.

Fixed issue where on some host GPUs, Skia shaders could not compile due to errors related to GL_EXT_shader_framebuffer_fetch. The extension should now be properly supported if the host GPU has the extension.

Fixed memory leak during long screen recording sessions.

ConstraintLayout 2.0.0 beta 6

Wednesday, May 13, 2020

We are happy to announce the release of ConstraintLayout 2.0 beta 6. It’s available from the google maven repository:dependencies {
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta6'
}

or if using the android.support packages:
dependencies {
implementation 'com.android.support.constraint:constraint-layout:2.0.0-beta6'
}
Documentation is available on https://developer.android.com/reference/androidx/constraintlayout/widget/ConstraintLayouthttps://developer.android.com/reference/androidx/constraintlayout/motion/widget/MotionLayoutExamples are available on https://github.com/android/views-widgets-samples/tree/master/ConstraintLayoutExamples Bugfixes
Here is the list of issues fixed in beta 6. Notable fixes are group visibility handling and derived constraints issues in MotionLayout.

MotionLayout constraintsets don't correctly read match width/height defaults	156539907
ImageFilterView & ImageFilterButton fail to set round	156420202
Views in ConstraintLayout not honoring "match constraints" (0dp) when used with ViewPager2	147202197
NoSuchMethodError: getLayoutDirection()	147871163
[MotionLayout] ANR	156047801
Group visibility + single view visibility	73186245
Group Visibility Does Not Support View.INVISIBLE	79307158
ConstraintLayout sometimes ignores visibility changes	154533618
ConstraintLayout Group visibility not updated	117485026
ConstraintLayout Group - Changing visibility when using INVISIBLE doesn't work correctly	130524019
ConstraitLayout Group	143163408

Emulator 30.0.12 Stable, PSA: If emulator not starting on Windows, look for and uninstall Riot Vanguard

Wednesday, May 13, 2020

Emulator 30.0.12 is now available in all channels. Changes versus previous stable version, 30.0.5:
Embedded emulator
More info: https://developer.android.com/studio/preview/features#run-emulator-studio
We are excited to introduce this and hope this feature makes the emulator easier to use in the typical developer workflow! If you experience issues, please file feedback in https://issuetracker.google.com/issues?q=componentid:192727.
Some known issues that we will address are:

Many Extended Controls UI components are not available
Frame rate is lower
Emulator image is more aliased
Some device form factors are not compatible with the embedded view

Support for host-side video decode (requires future Android R system image)

To save CPU usage and enable playback of higher resolutions and frame rates up to 4k60, the emulator now supports host-side video decode of H264 and VPx through a variety of host-side backends. This requires a future Android R system image release.

Windows/Linux: ffmpeg, vpx, NVIDIA CUVID

Linux w/ NVIDIA: requires libnvcuvid1, via sudo apt-get install -y libnvcuvid1

macOS: ffmpeg, vpx, VideoToolbox

The backend is auto-selected. VideoToolbox and NVIDIA CUVID will take advantage of decode hardware if available, while ffmpeg is the fallback if anything goes wrong or a format not supported.

Enhanced Car AVD Support

We've added experimental car data replay feature for when running Android Auto Embedded system images to the car data page in the extended controls. The feature is flagged off and is called CarVhalReplay. To enable:

Launch the emulator from command line with -feature CarVhalReplay
Or, add "CarVhalReplay = on" to ~/.android/advancedFeatures.ini. More details

Also, fixed issue in Car AVDs where in the HAL property page, LEFT_FRONT was incorrectly labeled as "Front right".

OpenGL ES

GLES translator libraries have been changed to be linked statically. This should very slightly improve binary size and startup time, while having fewer ways to link the wrong GLES libraries.
Removed libGLES12Translator as we use an internal GLES1 translator in all cases now for GLES1.
eglChooseConfig called with null attrib_list argument now more liberally returns the first config found rather than bailing out.
Fixed graphics error when orphaning EGL images in the guest via glTexImage2D.
Fixed issue where glTexStorage2D did not work with ASTC compressed texture formats (Requires corresponding change in system image (Android R DP3+))

Vulkan

Addressed a possible race condition with some versions of Vulkan loaders when creating many VkDevices/VkInstances in parallel.
Fixed a possible crash on guest process cleanup.
Worked around issue that occurs on Windows NVIDIA GPUs when creating/destroying VkPipelineLayouts in multiple threads.
Fixed issue where Vulkan external semaphore type OPAQUE_FD (from the guest) was not working on Windows hosts.

Other changes versus previous stable version, 30.0.5

Removed "Screenshot failed to find cb 0" messages.
Fixed possible memory corruption on Linux / macOS due to a path that used select() and did not check FD_SETSIZE limit.
On Linux, instructions to enable KVM if permission is denied should print more visibly now.
Fixed possible issue in Linux embedded emulator where the advertisement file might have been written to the wrong location.
Windows: Fixed a hang on AMD machines with AMD Hypervisor. This will require downloading and installing the latest Android Emulator Hypervisor for AMD Processors (v 1.5).
Removed prints about certs and GRPC on startup.
Fixed hang on starting Windows emulator that happened right after the boot animation.
Added support for vendor boot images (emulator side).
Upgraded protobuf version to 3.11.4.
Fixed kernel version parsing issue when running aarch64 guest kernels.
Metrics are now tracked for extended window usage.
macOS

macOS emulator no longer disables App Nap. If also run with -no-audio, the emulator should now stop from preventing sleep on macOS.
Relaxed logical core requirement to 6 from 8 on macOS so more users can run images with multiple vCPUs.

We now detect 3rd party graphics driver hooks that have been observed in crash reports, and alert the user if any were involved in the crashing stack trace.

PSA: If emulator not starting on Windows, look for and uninstall Riot Vanguard
Users on Reddit pointed out interference between Riot Vanguard and the emulator, leading to a possible failure to start the emulator:

https://www.reddit.com/r/androiddev/comments/gdr6pj/android_studio_emulator_killed_by_riot_vanguard/

We recommend uninstalling Vanguard.

Open a command prompt with admin privileges:

sc delete vgc
sc delete vgk

Reboot your machine, then uninstall Vanguard normally for good measure.

Android Studio 4.0 Release Candidate 1 available

Tuesday, May 12, 2020

Beta channelHelp > Check for UpdatesAndroid Studio > Check for Updatesdownload it here

General fixes

This update also includes fixes for the following public issues:

Android Gradle Plugin

Issue #154218507: Desugaring is disabled when dexing library code in shrunk library
Issue #154145638: Use correct minSdkVersion when fetching desugar_lib_dex from transform

Shrinker (R8)

Issue #153858923: R8 2.0.65 wrongly change classes to abstract
Issue #154531810: ClassCastException after updating to R8 2.0.59 (Android Gradle plugin 4.0.0-beta04)
Issue #153514654: VerifyError on dalvik with code catching ErrornoException
Issue #154315490: "R8: NullPointerException during IR Conversion" with gradle plugin 3.6.2
Issue #132828740: During evaluation of conditional if rules, dependent items are enqueued for un-met preconditions

For information on new features and changes in all preview builds of Android Studio 4.0, 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.

Emulator 30.0.12 Canary, PSA: If emulator not starting on Windows, look for and uninstall Riot Vanguard

Friday, May 8, 2020

Changes:

Fixed possible memory corruption on Linux / macOS due to a path that used select() and did not check FD_SETSIZE limit.

On Linux, instructions to enable KVM if permission is denied should print more visibly now.

Removed "Screenshot failed to find cb 0" messages.

Addressed a possible race condition with some versions of Vulkan loaders when creating many VkDevice/VkInstances in parallel.

PSA: If emulator not starting on Windows, look for and uninstall Riot Vanguardhttps://www.reddit.com/r/androiddev/comments/gdr6pj/android_studio_emulator_killed_by_riot_vanguard/sc delete vgc
sc delete vgk

ConstraintLayout 2.0.0 beta 5

Thursday, May 7, 2020

We are happy to announce the release of ConstraintLayout 2.0 beta 5. It’s available from the google maven repository:dependencies {
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta5'
}

or if using the android.support packages:
dependencies {
implementation 'com.android.support.constraint:constraint-layout:2.0.0-beta5'
}
Documentation is available on https://developer.android.com/reference/androidx/constraintlayout/widget/ConstraintLayoutExamples are available on https://github.com/android/views-widgets-samples/tree/master/ConstraintLayoutExamples
Bugfixes
We fixed several issues in beta 5 -- upgrade from previous versions is encouraged, specifically when using MotionLayout.

[2.0.0-beta4] First tap lost in a scrolling view contained in a MotionLayout	146413738
ConstraintLayout Group - Changing visibility when using INVISIBLE doesn't work correctly	130524019
[MotionLayout] - NestedScrollView + RecyclerView + variable size header on click	138035155
[MotionLayout] does not expand to wrap content inside RecyclerView item	138312805
MotionLayout drag doesn't work after fling in RecyclerView	141319444
Flow : Set only vertical style, but applied both vertical and horizontal style	141809028
CustomView as part of a CollapsibleToolbar (MotionLayout) extends beyond it's bounds when scrolling up	143971662
Flow doesn't handle gaps correctly with wrapMode=chain	144298723
MotionLayout packed horizontal chain style does not work for RTL locales	144301446
Incorrect behavior with GONE views used in Flow helper	144388675
Percentage Constraint not working properly in Constraint Flow Layout	144667391
Constraint Flow layout rows are getting overlapped	144668321
Problem with chained widgets	144987885
deriveConstraintsFrom doesn't seem to derive custom attributes	145977578
[2.0.0-beta04] layout_constraintVertical_bias is 0.5 like 1	146591537
ConstraintLayout 1.1 bug or undocumented change	77991323
MotionLayout: View shakes after list scroll	126123628
Changing visibility not redrawing layout	127623474
NPE on tap when scene not assigned	137286955
MotionLayout set Transition Listener	139481711
layout_constraintDimensionRatio stays applied after a move to another ConstraintSet in MotionLayout	140263105
touchRegionId doesn't work properly for Motion Layout	142498322
[ConstraintLayout 2.0.0-beta-2] MotionLayout: Calling transitionToState too quickly results in MotionLayout getting into a bad state	142698005
Nested MotionLayout gets stuck on scroll even with motion:onTouchUp="autoComplete"	143501796
MotionLayout visibilityMode="ignore" doesn't work with deriveConstraintsFrom	144795175
Padding start/end/vertical/horizontal not working in Constraint Layout Flow	146265835
setTransition(id) method request	146537011
The Layout deforms by itself.	146794818
CL 2.0 beta 4 chain biases and gone views	146920079
Flow elevation problem	148483377

Android Studio 4.1 Canary 9 available

Thursday, May 7, 2020

Canary or Dev channelHelp > Check for UpdatesAndroid Studio > Check for Updatesdownload it hereImprovements from IntelliJ IDEA 2020.1we welcome any feedbackIDE configuration directory changes In this release, the locations for user configuration directories have been changed, consistent with recent updates to IntelliJ IDEA, the IDE on which Android Studio is based. For more information, please see the release notes. Missing Kotlin plugin In Canary 9, you may see the following error when first launching Android Studio after upgrading: missing essential plugin org.jetbrains.android This can happen when you import your settings from a previous version of Android Studio. Typically, this means you have a locally installed Kotlin plugin that is not compatible with the new IDE. For a workaround, please see the release notes. General Fixes Build Variants

Issue #153476414: Exception thrown when trying to run/configure a release build

Data Binding

Issue #153711619: AGP 3.6.2: Incremental compilation failure in DataBinding

Issue #153513464: LiveData Custom Binding

Database Inspector

Issue #153684332: Database inspector improvements

Issue #154871161: App crash when trying to use Database Inspector

Debugger

Issue #154969128: Consider restoring A 3.6 behavior of "Stop" button

Dexer (D8)

Issue #154315491: AGP 4.x build fails with exception in L8DexDesugarLibTask configuration

Lint

Issue #37133950: new Lint check: calling the same super function more than once

SDK Manager

Issue #150942306: Command-line sdkmanager needs better error if root dir can't be found

Issue #150943631: sdk manager should be smarter about deriving package path

Issue #150944411: Package A shouldn't overwrite package B if B is incorrectly in A's location

Issue #150946939: cmdline-tools top-level directory shouldn't be called "tools"

Issue #62063562: Add --installed option to sdkmanager --list

Issue #137389944: CLI does not respect TERM=dumb

Issue #69461360: Usability issue: subcommand and/or quotes around package name for clarity

Issue #37130052: sdkmanager --package_file= command isn't whitespace tolerant

Issue #152120283: sdkmanager from cmdlinetools fails with unhelpful exception when --sdk_root supplied

Issue #37130079: sdkmanager --update doesn't output anything to stdout

Tools Windows

Issue #154298380: Android command-line tools seems to be 6200805 broken on Windows

View Binding

Issue #154738763: Android View Binding does not support id's using dot case

Issue #154747638: Merge tag is causing compilation error

Android Studio Preview release notesreporting a bugvote for an existing issue

Emulator 30.0.11 Canary

Friday, May 1, 2020

Embedded emulator

The emulator can now run embedded inside Android Studio. This requires Android Studio 4.1 Canary 8 or later, and needs to be enabled manually via Android Studio's Preferences > Tools > Emulator.

More info: https://developer.android.com/studio/preview/features#run-emulator-studio

We are excited to introduce this and hope this feature makes the emulator easier to use in the typical developer workflow!

If you experience issues, please file feedback in https://issuetracker.google.com/issues?q=componentid:192727. Some known issues that we will address are:

Extended Controls UI components are not available
Frame rate is lower
Emulator image is more aliased
Some device form factors are not compatible with the embedded view

Other changes

We now detect 3rd party graphics driver hooks that have been observed in crash reports, and alert the user if any were involved in the crashing stack trace.

Fixed graphics error when orphaning EGL images in the guest via glTexImage2D.

Vulkan: Fixed a possible crash on guest process cleanup.

Fixed possible issue in Linux embedded emulator where the advertisement file might have been written to the wrong location.

Fixed a hang on AMD machines with AMD Hypervisor. This will require downloading and installing the latest Android Emulator Hypervisor for AMD Processors (v 1.5).

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