Upgrade 1.1.3 to 2.0.* fails. AAPT: error: duplicate value for resource about constraintlayout HOT 8 CLOSED

This is a constant problem in Android.
Attributes do not have name spaces. Attributes of the same name must have the same type.

All libraries need to be carful.
Our approach:

1. Use 2 word names (motionProgress not progress)
2. If we get a report before we release we change the attribute.

1.1.3 was release in August 2018
So we are well pass that.

from constraintlayout.

Material Design 1.2.x depends on ConstraintLayout 1.1.3
Material Design 1.3.0-alpha02 included an upgrade to depend on ContraintLayout 2.x

Because of changes in ConstraintLayout attrs during the 2.x migration, this means that using Material Design 1.2.x with ConstraintLayout 2.x is just not possible.

from constraintlayout.

Haven't tried with 1.3.0-* before, but that still doesn't work..
I get exactly the same error with those references:

implementation 'com.google.android.material:material:1.3.0-rc01'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4' // also tried with 2.0.1 which should be exactly what material is using but doesn't work either.

from constraintlayout.

Have you tried contacting the material team ?

from constraintlayout.

I meet the same error with constraintlayout:2.1.0-alpha2 and material:1.2.0

from constraintlayout.

@xuyisheng @mortenholmgaard what versions are you running of Android Studio & AGP? On 4.1.1 and 4.1.2 and the Arctic Fox canaries I'm not seeing the issue you describe with these versions:

implementation 'com.google.android.material:material:1.3.0-rc01'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4' 

from constraintlayout.

I am running Android Studio 4.1.2 and AGP 4.1.2.

I tried making a sample project for the case but saw that it worked then. So after some elimination of the other included libaries I figured out that the conflict was with this: miguelhincapie/CustomBottomSheetBehavior#85

from constraintlayout.

have resolved it by renaming the attr name

attr name="fontTest" format="integer"

from constraintlayout.