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.

Annabelannabela

Answer 1

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.

Mccallister

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 – Annabelannabela

Clean project is all I had to do – Faviolafavonian

Answer 2

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

Beauregard