androidx.constraintlayout.widget.constraintlayout don't have chains that you can drag

Question

I'm using androidx.constraintlayout.widget.ConstraintLayout in my layout and it does not show the chains, also I can't drag any widgets. I just type the constraints that I want to use.

<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="112dp"/>

here's a sample screen shot for androidx constraintLayout: androidx.constraintlayout.widget.ConstraintLayout

but when I tried switching back to : android.support.constraint.ConstraintLayout it i can see it

<android.support.constraint.ConstraintLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="112dp"/>

here's a sample screen shot for support constraintLayout: android.support.constraint.ConstraintLayout

is this a bug or something?

edit:

my current solution is to switch from:

implementation 'androidx.constraintlayout:constraintlayout:1.1.2'

to

implementation 'com.android.support.constraint:constraint-layout:1.1.2'

but this does not solve my problem cause I don't want to use support.

score 34 · Accepted Answer · edited Nov 04 '19 at 18:22

34

I had the same problem until I realized that I should use the Canary version to solve it. after installing Canary version beside stable version, open the project and now you can use this implementation:

implementation 'androidx.constraintlayout:constraintlayout:1.1.2'

instead of

implementation 'com.android.support.constraint:constraint-layout:1.1.2'

Keep in mind that you may need to do the following:

clean project
rebuild
invalidate caches/restart

My problem solved with this method.

edited Nov 04 '19 at 18:22

rmtheis

6,978
9
56
74

answered Aug 17 '18 at 11:25

Arvin Rokni

445
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1

I'm using canary version when I've encountered this. I've realized that maybe because it's in the 'CANARY' version where we encounter more bugs, and where bugs can autofix itself. I updated my Android Studio to 3.3 Canary 6 and now its working – raquezha Aug 23 '18 at 04:38
Clean project is all I had to do – bickster Feb 09 '20 at 20:54

Dishant Kawatra · Answer 2 · 2021-04-15T08:05:50.073

if you are using latest Android update 3.3.3 then migrate to Android x from support constraint layout:

<android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>

<androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

For getting this also change gradle:

implementation com.android.support.constraint:constraint-layout:1.1.3

to

implementation androidx.constraintlayout:constraintlayout:2.0.0-alpha3

androidx.constraintlayout.widget.constraintlayout don't have chains that you can drag

edit:

2 Answers2