Attribute "android:alpha" has already been defined

[xuyisheng]

compile with 'androidx.constraintlayout:constraintlayout:2.0.4'

runs error:

Attribute "android:alpha" has already been defined
Attribute "android:translationX" has already been defined
Attribute "android:translationY" has already been defined
Attribute "android:translationZ" has already been defined

[kaeawc]

@xuyisheng What version of AGP are you using? Is it older than 3.0.1?

[kaeawc]

@xuyisheng or are you trying to pin the versions for both constraintlayout and solver? You cannot use the old solver version with the newer constraintlayout module.

[zxw1962]

@kaeawc we use AGP 3.2.1 & gradle version 4.6, got the same errors.
Seems the root cause is the "PropertySet" defined in attrs.xml with
attr name="android:alpha" format="float" (I guess the format="float" should be removed here?).
What do you say? Thanks in advance.

[xuyisheng]

@xuyisheng What version of AGP are you using? Is it older than 3.0.1?

My AGP is 3.2.0，and constraintlayout version of 2.0.4, I have checked version of constraintlayout and solver, it's all right

[xuyisheng]

Are you making progress ？

[zxw1962]

Are you making progress ？

we use the above version to workaround this error.