Android Motionlayout：Android 資源鏈接失敗

Question

在重構到motionlayout 2.0.0-beta1 后，我不斷收到構建錯誤（我知道這不是最新版本——beta2 會產生相同的錯誤）。

這是堆棧跟蹤：

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.

沒有關於哪個文件產生錯誤的跡象，據我所知，我沒有在我的項目中的任何地方使用任何這些屬性。

Answer 1

此問題與 Android Studio 3.6 和早於 2.0.0-beta3 的 ConstraintLayout 版本有關 - 我已在此處報告該問題。 這在 ConstraintLayout 2.0.0-beta3 中得到修復。

Android Studio 3.5 不會產生此錯誤。

要使其在 AS 3.6 beta 中工作，請升級到 ConstraintLayout 2.0.0-beta3 或更高版本。

Answer 2

如果即使升級ConstraintLayout也無濟於事，請嘗試將format屬性添加到attrs.xml文件中的attr聲明中。

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

為您的屬性選擇正確的格式。

Answer 3

升級到constraintlayout:2.0.0-beta4，為我工作，或更高版本。 將 android studio 升級到 3.6 后會發生這種情況

Answer 4

我將 gradle 版本升級到com.android.tools.build:gradle:3.6.0然后遇到了這個問題，只需將 gradle 版本降級到com.android.tools.build:gradle:3.5.3問題就解決了

Answer 5

你必須做兩件事：

1. 更新你的安卓工作室。

2. 添加最新的依賴實現

   'androidx.constraintlayout:constraintlayout:2.0.0-rc1'