Release updates archive

ConstraintLayout 1.0 is now available

Wednesday, February 22, 2017

Note: with Android Studio 2.3 reaching release candidate status, we also encourage people to switch to it for editing layouts (ConstraintLayout included). Many improvements have been made since 2.2, providing a smoother experience.

Relative positioning of widgets to parent or siblings

Centering positioning and bias control

Flexible size control (min/max/wrap/constrained)

Per axis group behavior (chains, weights)

Advanced visibility behavior (gone handling and margins)

Horizontal and Vertical virtual guidelines (fixed positions or percentage-based)

Aspect Ratio support

Advanced API to set constraints programmatically, allowing easy animations between layouts

A code lab is available as an introduction to ConstraintLayout as well as a developer guide. A complete online documentation is also available. Many excellent tutorials have also been created by the developers’ community; you can find them on YouTube, Medium, or your favorite search engine.
Changes since beta5: bug fixes related to wrap_content, support for MEASURE_STATE_TOO_SMALL.

Android Studio 2.3 RC 1 is Now Available

Friday, February 17, 2017

Gradle: https://code.google.com/p/android/issues/detail?id=233777

Layout editor: https://code.google.com/p/android/issues/detail?id=234221

Layout editor logging to help us track down https://code.google.com/p/android/issues/detail?id=230567

ConstraintLayout beta 5 is now available

Thursday, February 9, 2017

Use of MATCH_PARENT now throws exception

Improved performance in wrap_content use cases (30-40%)

Better view dimension control (6 new attributes)

Improved behaviour of gone in chains

Aspect ratio enhancements

Increased coverage of apis in ConstraintSet (chains, transforms, etc.). See documentation.

NoteMATCH_PARENTMATCH_PARENTImproved performancewrap_contentBetter view dimension controls0dpMATCH_CONSTRAINT

layout_constraintWidth_default = spread (default, similar to the previous behavior)

layout_constraintWidth_default = wrap

layout_constraintHeight_default = spread

layout_constraintHeight_default = wrap

layout_constraintWidth_min = [dimension]

layout_constraintWidth_max = [dimension]

layout_constraintHeight_min = [dimension]

layout_constraintHeight_max = [dimension]

SpreadWrapGone Behavior in ChainsImproved Ratio Support

Android Studio 2.3 Beta 4 is now available

Thursday, February 9, 2017

Fixed Issues

Instant Run: 232931, 227610

Layout: 232499

Build Fixes: 233068, 233093,

General IDE fixes: 233016, 233038

And a few smaller updates.

Android Emulator Revision 25.3.0 (Feb 2017)

Wednesday, February 8, 2017

SDK ToolsSDK Tools 25.3

Android SDK Platform-tools revision 24 or later.

Android SDK tools 25.3.0

Fully GLES 2.0 compliant. Given a host GPU that has conformant desktop OpenGL drivers, the emulator now passes 100% of CTS dEQP-GLES2 must-pass.

Swiftshader as a pure software renderer on the host

Initial IPV6 support.

Improved pipe performance - Android Pipe, the main communication channel between the emulator and Android OS, is much (order of magnitude) faster, has lower latency and has better threading performance (especially noticeable on x64 images). This improves ADB push/pull speed, 3D acceleration support and overall responsiveness of the emulator.

Improved audio support

Improved video playback performance. The emulator now stores all video color buffers in host/guest shared memory and performs any needed final YUV->RGB conversion in the GPU. 1080p30 (even 60) should be well within reach of most systems now. (but only when new images are released)

Faster disk IO - Emulator now uses separate thread to dispatch disk IO, resulting in much lower latency and improved throughput (~1.5x sequential, ~5x random access).

Improved graphics performance. Android Pipe improvements have also increased graphics performance! In addition, the emulator will use GPU-side buffers (glBindBuffers / glBufferData) when the guest requests them, decreasing CPU overhead in some apps. More to come when new system images are released.

Various GUI enhancement

Android SDK Tools Revision 25.3.0 (Feb 2017)

Wednesday, February 8, 2017

Android SDK Platform-tools revision 24 or later.

Android Emulator is removed from this package and moved to a different SDK directory. See the new Android Emulator Release Notes. This change is backward compatible with older studio versions.

"android avd" command-line functionality replaced with new avdmanager tool.

Obsolete/deprecated tools have been removed:

android
ddms
draw9patch
hierarchyviewer
traceview
ant scripts
Project and activity templates

Executables have been moved to bin/

jobb
lint
monkeyrunner
screenshot2
Uiautomatorviewer

Enhanced sdkmanager

View and accept all licenses from the command line
Improved verbose-mode package list

b.android.com

February 9:

It appears the verbose mode did not make it into this release and should come in the next update. [bug: 229373]
Running "avdmanager --list" results in a ClassCastException [bug: 233816]

Updates archive