Android Motionlayout: Android resource linking failed

Question

I keep getting build errors after a refactor to motionlayout 2.0.0-beta1 (I know it's not the newest version - beta2 produces same errors).

Here's the stacktrace:

AAPT: /Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6514: error: resource attr/flow_horizontalSeparator (aka com.example:attr/flow_horizontalSeparator) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6514: error: resource attr/flow_verticalSeparator (aka com.example:attr/flow_verticalSeparator) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6515: error: resource attr/flow_horizontalSeparator (aka com.example:attr/flow_horizontalSeparator) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6515: error: resource attr/flow_verticalSeparator (aka com.example:attr/flow_verticalSeparator) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6517: error: resource attr/flow_horizontalSeparator (aka com.example:attr/flow_horizontalSeparator) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6517: error: resource attr/flow_verticalSeparator (aka com.example:attr/flow_verticalSeparator) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6517: error: resource attr/motionProgress (aka com.example:attr/motionProgress) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6860: error: resource attr/motionProgress (aka com.example:attr/motionProgress) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6861: error: resource attr/motionProgress (aka com.example:attr/motionProgress) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6876: error: resource attr/motionProgress (aka com.example:attr/motionProgress) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6877: error: resource attr/motionProgress (aka com.example:attr/motionProgress) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:6877: error: resource attr/waveDecay (aka com.example:attr/waveDecay) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:7288: error: resource attr/motionPathRotate (aka com.example:attr/motionPathRotate) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:7290: error: resource attr/motionProgress (aka com.example:attr/motionProgress) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:7549: error: resource attr/motionProgress (aka com.example:attr/motionProgress) not found.
/Users/TBS/StudioProjects/ExampleApp/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:8270: error: resource attr/duration (aka com.example:attr/duration) not found.
error: failed linking references.

There's no indication as to what file produces the error and to my knowledge I don't use any of these attributes anywhere in my project.

Bohsen · Accepted Answer · 2020-06-02T09:08:01.577

38

This problem is related to Android Studio 3.6 and ConstraintLayout versions earlier than 2.0.0-beta3 - I've reported the issue here. This is fixed in ConstraintLayout 2.0.0-beta3.

Android Studio 3.5 doesn't produce this error.

To make it work in AS 3.6 beta, upgrade to ConstraintLayout 2.0.0-beta3 or later.

edited Jun 02 '20 at 09:08

answered Jul 31 '19 at 08:36

Bohsen

3,848
3
26
46

1

We have to downgrade? – IgorGanapolsky Sep 08 '19 at 17:00
1

@IgorGanapolsky No, there's a workaround. See my edited answer. – Bohsen Sep 08 '19 at 19:14
3

You can now update to constraint layout beta3 which fixes the issue. – Laimiux Oct 28 '19 at 19:44
@Laimiux How to upgrade the ContraintLayout? I'm new to android and using studio canary 4. Does it mean that the Motion example on android github page is obsolete? https://github.com/android/animation-samples/tree/master/Motion – Unknown123 Feb 25 '20 at 17:33
2

I've just learnt it. `File > Project Structure > Dependencies > All Modules > Add Dependency (Plus button) > Library Dependency > On Step 1, search "androidx.constraintlayout" > choose the latest version (at the moment it is 2.0.0-beta4) > OK > OK` Done. It has an information message, "Gradle promoted library version from 2.0.0-beta2 to 2.0.0-beta4". Now you can build it and run it. – Unknown123 Feb 25 '20 at 18:09
2

implementation "androidx.constraintlayout:constraintlayout:2.0.0-beta4" upgrading to this beta version of constraintlayout worked for me – kalya Feb 28 '20 at 12:12

Tigran Babajanyan · Answer 2 · 2020-03-15T09:17:07.067

4

If even upgrading ConstraintLayout doesn't help, try to add format attribute to your attr declaration in your attrs.xml file.

<resources>
    <attr name="yourAttrName" format="string" />
</resources>

Choose proper format for your attribute.

edited Mar 15 '20 at 09:17

answered Feb 27 '20 at 07:06

Tigran Babajanyan

1,725
17
36

2

After upgrading android studio 3.6 and gradle plugin to latest version faced this issue. Adding format solved the issue. – Bek Mar 13 '20 at 10:55

score 2 · Answer 3 · answered Feb 28 '20 at 12:14

2

upgrading to constraintlayout:2.0.0-beta4, worked for me , or later version. This happens after you upgrade android studio to 3.6

answered Feb 28 '20 at 12:14

kalya

309
2
4

score 1 · Answer 4 · answered May 06 '20 at 12:25

1

I upgraded gradle version to com.android.tools.build:gradle:3.6.0 then faced this issues, just downgrade gradle version to com.android.tools.build:gradle:3.5.3 and problem resolved

answered May 06 '20 at 12:25

Sumit

832
10
18

score 0 · Answer 5 · edited Aug 21 '20 at 06:47

0

You would have to do two things:

Update your android studio.
add Latest dependency implementation

'androidx.constraintlayout:constraintlayout:2.0.0-rc1'

edited Aug 21 '20 at 06:47

Hadi Mirzaei

232
2
16

answered Aug 20 '20 at 16:55

Atul maurya

1

Android Motionlayout: Android resource linking failed

5 Answers5