ConstraintLayout 2.0.0 beta 7

dependencies {
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta7'
}

or if using the android.support packages:

dependencies {
    implementation 'com.android.support.constraint:constraint-layout:2.0.0-beta7'
}

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 beta 7. Notable fixes are:

• Nested scroll view issues in MotionLayout
• Transition listener issues with MotionLayout
• Memory leak in MotionLayout
• RecyclerView performances
• Group visibility
• Padding issues

[2.0.0-beta4] First tap lost in a scrolling view contained in a MotionLayout	146413738
ConstraintLayout should with wrap_content match the heighest child	156556215
constraintSet.applyTo(...) when called two or more times in a row, sometimes doesn't work.	156556217
ConstraintLayout show different preview since 2.0.0-beta5	156582652
[2.0.0-beta6] onTransitionCompleted called multiple times and with an id of -1	157003182
ConstraintLayout 2.0 incorrectly applies paddingEnd to RHS of views in RTL	157072539
[2.0.0-beta6] MotionLayout + RecyclerView binding all items before recycling all but visible again	157075835
Memory leaks when scrolling using MotionLayout	157370588
Flinging through ConstaintLayouts (beta-6) in RecyclerView causes loop	157498393
match_constraint can sometimes be collapsed incorrectly	157498451
MotionLayout leaks nested scrollable view in its mScrollTarget field	158494145
onTransitionCompleted is not always called	149423772
RTL issue paddingStart/End working like left/right	156448748
group visibility doesn't apply correctly in 2.0 beta 6	157599997
wrap_content on ConstraintLayout itself does not behave as it should with wrapped TextView	111110537
MotionLayout: OnSwipe doesn't work after transitioning to a third state	135130730
[MotionLayout 2.0.0-beta2] TransitionListener triggers callbacks incorrectly	135627413
Motionlayout crash if count of custom attributes in constraint more than count of constraint sets	136362587
MotionLayout throwing ArrayIndexOutOfBoundsException when adding more than three CustomAttribute elements	144151823
[MotionLayout] Add a `addTransitionListener` method rather than a setter	144714753
Constraint Layout without any children views with height wrap_content takes full parent height	146698785
ImageFilterButton NPE GLES20Canvas.clipPath()	147871162
[Motion Layout] Jiggling if we fling nested recycler and than move content into opposite direction	148483381
[2.0.0-beta4] Motion layout jumps to the end when Recycler view is a touch region	150268542
RecyclerView#onScrollStateChanged delayed when child of MotionLayout	150881510
CL 2.0.0 Beta 4 rendering issue	151317170
Nested ConstraintLayout doesn't show correctly with data binding	151648853
ImageFilterView is not showing background when roundPercent > 0 is set on API < 21	153243019
beta 6 : wrap content + align baselines	156660905
[MotionLayout] strange behavior in auto transition	157351958
[2.0.0-beta6] no pass through of `baseline_toBaselineOf` when View is GONE	157401856
maxHeight + padding	157448494
MotionLayout with RecyclerView has messed up click listeners	157501464
MotionLayout ImageFilterView roundPercentage doesn't work after you set to 0.0	147094777
addToVerticalChain: Incorrect connections when adding to the top of a chain.	149173288