dependencies {
or if using the android.support packages:
dependencies {
Documentation is available on https://developer.android.com/reference/androidx/constraintlayout/widget/ConstraintLayout and
https://developer.android.com/reference/androidx/constraintlayout/motion/widget/MotionLayout
Examples are available on https://github.com/android/views-widgets-samples/tree/master/ConstraintLayoutExamples
Bugfixes
Here is the list of issues fixed in rc1. Notable fixes are:
Flow fixes
RecyclerView fixes (we recommend to update to recyclerview 1.2.0 alpha 5 or later)
MotionLayout TransitionListener fixes
MotionLayout memory leak fix
layout_constrainedWidth doesn't not work in Flow's children 157681357 NPE 's in Flow 162261507 layout_constraintDimensionRatio stays applied after a move to another ConstraintSet in MotionLayout 140263105 MotionLayout drag doesn't work after fling in RecyclerView 141319444 [ConstraintLayout 2.0.0-beta3] NPE when deriveConstraintsFrom is invalid. 143549617 apply layout_height="wrap_content" app:layout_constrainedHeight="true" this view height is full of constraint size when onCreat . And Then swich the view GONE/VISIBLE , the size change to the expected result 149427470 Flow height is bigger than it should be when its height is `wrap_content` 158285666 NullPointerException 161061411 Penultimate ImageView shifted when adding more rows 161063291 single element in the chain don't have bias applied 161741571 MotionLayout : adding views to Flow Helper 150940641 Resize in textview when I scroll in customized MotionLayout 155215198 MotionLayout firing callback endlessly with GlobalLayout 158068868 [Feature-Request] Addition of MotionScene.Transistion::getId. 160395303 Incorrect barrier and referenced view placement in 2.0.0-beta8 161156064 layout_width="wrap_content" on the parent does not work correctly when a child View has layout_constraintDimensionRatio and layout_constraintHeight_percent in 2.0.0-beta8 161826272 possible MotionLayout memory leak 161926837 Annotate ConstraintLayout constructor context param as not nullable 161926849 Android resource compilation failed after implementation 'constraint-layout:2.0.0-beta8' 162011618
We are happy to announce the release candidate of ConstraintLayout 2.0. As this might be the final release before stable, we encourage people to try it and report any issues with their projects! ConstraintLayout 2.0 adds a long list of capabilities to v1, from better runtime API to build up layouts to the introduction of new layout mechanisms such as Flow , or additional helpers like Layer. Most notably though, this release introduces MotionLayout , an extremely powerful subclass of ConstraintLayout that you can use to easily create refined motion in your application. In addition to the existing Layout Editor in Android Studio, allowing easy creation and edition of UI with ConstraintLayout, we recently added a new Motion Editor in Android Studio 4.0, enabling you to quickly take advantage of MotionLayout in your projects.
It’s available from the google maven repository:
dependencies {
or if using the android.support packages:
dependencies {
Documentation is available on https://developer.android.com/reference/androidx/constraintlayout/widget/ConstraintLayout and https://developer.android.com/reference/androidx/constraintlayout/motion/widget/MotionLayout Examples are available on https://github.com/android/views-widgets-samples/tree/master/ConstraintLayoutExamples
Bugfixes
Here is the list of issues fixed in rc1. Notable fixes are:
Flow fixes
RecyclerView fixes (we recommend to update to recyclerview 1.2.0 alpha 5 or later)
MotionLayout TransitionListener fixes
MotionLayout memory leak fix
layout_constrainedWidth doesn't not work in Flow's children 157681357 NPE 's in Flow 162261507 layout_constraintDimensionRatio stays applied after a move to another ConstraintSet in MotionLayout 140263105 MotionLayout drag doesn't work after fling in RecyclerView 141319444 [ConstraintLayout 2.0.0-beta3] NPE when deriveConstraintsFrom is invalid. 143549617 apply layout_height="wrap_content" app:layout_constrainedHeight="true" this view height is full of constraint size when onCreat . And Then swich the view GONE/VISIBLE , the size change to the expected result 149427470 Flow height is bigger than it should be when its height is `wrap_content` 158285666 NullPointerException 161061411 Penultimate ImageView shifted when adding more rows 161063291 single element in the chain don't have bias applied 161741571 MotionLayout : adding views to Flow Helper 150940641 Resize in textview when I scroll in customized MotionLayout 155215198 MotionLayout firing callback endlessly with GlobalLayout 158068868 [Feature-Request] Addition of MotionScene.Transistion::getId. 160395303 Incorrect barrier and referenced view placement in 2.0.0-beta8 161156064 layout_width="wrap_content" on the parent does not work correctly when a child View has layout_constraintDimensionRatio and layout_constraintHeight_percent in 2.0.0-beta8 161826272 possible MotionLayout memory leak 161926837 Annotate ConstraintLayout constructor context param as not nullable 161926849 Android resource compilation failed after implementation 'constraint-layout:2.0.0-beta8' 162011618
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