Cordova Android错误：添加插件时app：TransformClassesWithDesugarForDebug

Question

每当我将cordova-plugin-intercom添加到解决方案中时，在构建过程中就会出现一个错误：app：transformClassesWithStackFramesFixerforDebug。在下面添加了整个输出。Project是一个空的Cordova插件，除了安装的插件什么都没有。感谢援助。下面添加了Stacktrace。我用的是最新的科尔多瓦版本。

目前，我尝试的是：

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C:\Development\IntercomTest>cordova build android Android Studio project detected ANDROID_HOME=C:\Users\alan.grixti\AppData\Local\Android\sdk JAVA_HOME=C:\Program Files\Java\jdk1.8.0_131 studio Subproject Path: CordovaLib Subproject Path: app Starting a Gradle Daemon (subsequent builds will be faster) publishNonDefault is deprecated and has no effect anymore. All variants are now published. Download https://jcenter.bintray.com/com/android/tools/build/gradle/maven-metadata.xml Download https://maven.google.com/com/android/tools/build/gradle/maven-metadata.xml Configuration 'compile' in project ':app' is deprecated. Use 'implementation' instead. The Task.leftShift(Closure) method has been deprecated and is scheduled to be removed in Gradle 5.0. Please use Task.doLast(Action) instead.
        at build_1qfn21zmft731guegshputeki.run(C:\Development\IntercomTest\platforms\android\app\build.gradle:150) Download https://jcenter.bintray.com/io/intercom/android/intercom-sdk-base/maven-metadata.xml :CordovaLib:preBuild UP-TO-DATE :CordovaLib:preDebugBuild UP-TO-DATE :CordovaLib:compileDebugAidl UP-TO-DATE :CordovaLib:compileDebugRenderscript UP-TO-DATE :CordovaLib:checkDebugManifest UP-TO-DATE :CordovaLib:generateDebugBuildConfig UP-TO-DATE :CordovaLib:prepareLintJar UP-TO-DATE :CordovaLib:generateDebugResValues UP-TO-DATE :CordovaLib:generateDebugResources UP-TO-DATE :CordovaLib:packageDebugResources UP-TO-DATE :CordovaLib:platformAttrExtractor UP-TO-DATE :CordovaLib:processDebugManifest UP-TO-DATE :CordovaLib:processDebugResources UP-TO-DATE :CordovaLib:generateDebugSources UP-TO-DATE :CordovaLib:javaPreCompileDebug UP-TO-DATE :CordovaLib:compileDebugJavaWithJavac UP-TO-DATE :CordovaLib:processDebugJavaRes NO-SOURCE :CordovaLib:transformClassesAndResourcesWithPrepareIntermediateJarsForDebug UP-TO-DATE :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE :app:compileDebugAidl UP-TO-DATE :CordovaLib:packageDebugRenderscript NO-SOURCE :app:compileDebugRenderscript UP-TO-DATE :app:checkDebugManifest UP-TO-DATE :app:generateDebugBuildConfig UP-TO-DATE :app:prepareLintJar UP-TO-DATE :app:generateDebugResValues UP-TO-DATE :app:generateDebugResources UP-TO-DATE :app:mergeDebugResources UP-TO-DATE :app:createDebugCompatibleScreenManifests UP-TO-DATE :app:processDebugManifest UP-TO-DATE :app:splitsDiscoveryTaskDebug UP-TO-DATE :app:processDebugResourcesC:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values-v28\values-v28.xml:9:5-12:13: AAPT: error: resource android:attr/dialogCornerRadius not found.

C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: AAPT: error: resource android:attr/dialogCornerRadius not found.

C:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values\values.xml:1304:5-69: AAPT: error: resource android:attr/fontVariationSettings not found.

C:\Users\alan.grixti\.gradle\caches\transforms-1\files-1.1\appcompat-v7-28.0.0.aar\781a7646a099cfab576de3a8299207af\res\values\values.xml:1304:5-69: AAPT: error: resource android:attr/ttcIndex not found.

C:\Development\IntercomTest\platforms\android\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:7: error: resource android:attr/dialogCornerRadius not found. 
C:\development\intercomtest\platforms\android\app\build\inverment\mergedebugresources\merged.dir\values-v28\values-v28.xml:11:error：resource android:attr/dialogcornerradius未找到。
C:\development\intercomtest\platforms\android\app\build\inverment\mergedebugresources\merged.dir\values\values.xml:644:error：resource android:attr/fontvariationsettings未找到。
C:\development\intercomtest\platforms\android\app\build\inverment\mergedebugresources\merged.dir\values\values.xml:644:error：resource android:attr/ttcindex未找到。错误：链接引用失败。
                

Answer 1

导致构建失败的实际错误如下：

AAPT：错误：找不到资源Android：attr/DialogCornerRadius。

如本答案所述，出现此错误的原因是compileSdkVersion与Android支持库版本不匹配。

compile "com.android.support:appcompat-v7:26.+"

一个潜在的解决方案是使用cordova-android-support-gradle-release覆盖其他插件指定的支持库版本：

cordova plugin add cordova-android-support-gradle-release  --variable ANDROID_SUPPORT_VERSION=27.+