前言
这个是导入SystemUI时出现的，记录一下，方便自己查阅。
好记性不如烂笔头
正文
导入旧的module后出现：
Cause: duplicate entry: androidx/core/R$attr.class
更多日志
Execution failed for task ':SystemUI:compileReleaseJavaWithJavac'.> Could not resolve all files for configuration ':SystemUI:releaseCompileClasspath'. > Failed to transform android-support-v13_classes.jar to match attributes {artifactType=android-classes-jar, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}. > Execution failed for JetifyTransform: E:\AndroidAllApp\libs\android-support-v13_classes.jar. > Failed to transform 'E:\AndroidAllApp\libs\android-support-v13_classes.jar' using Jetifier. Reason: ZipException, message: duplicate entry: androidx/core/R$attr.class. (Run with --stacktrace for more details.) > Failed to transform android-support-v4_classes.jar to match attributes {artifactType=android-classes-jar, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}. > Execution failed for JetifyTransform: E:\AndroidAllApp\libs\android-support-v4_classes.jar. > Failed to transform 'E:\AndroidAllApp\libs\android-support-v4_classes.jar' using Jetifier. Reason: ZipException, message: duplicate entry: androidx/core/R$attr.class. (Run with --stacktrace for more details.) > Failed to transform SettingsLib_classes.jar to match attributes {artifactType=android-classes-jar, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}. > Execution failed for JetifyTransform: E:\AndroidAllApp\libs\SettingsLib_classes.jar. > Failed to transform 'E:\AndroidAllApp\libs\SettingsLib_classes.jar' using Jetifier. Reason: ZipException, message: duplicate entry: androidx/core/R$anim.class. (Run with --stacktrace for more details.)
解决方式
细心的你或许会发现，上面三个jar出现一样的错误信息：
> Failed to transform xxx.jar to match attributes {artifactType=android-classes-jar, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}. > Execution failed for JetifyTransform: E:\AndroidAllApp\libs\xxx.jar.
经过查询和验证，发现新版本的Android Studio（ 我的V4.1.2）在创建工程时有默认配置，第三方库自动转换使用AndroidX
具体看gradle.properties中的
#gradle.properties# Automatically convert third-party libraries to use AndroidXandroid.enableJetifier=true
把[android.enableJetifier=true] 这句去掉就可以ok了。
PS： 本文有试过《Android Studio duplicate entry: xx.class 相关问题的处理方法》中的方法，但没有效果，不同的情况可能不同。如果我的解决不了的你问题，你可以看看文末的文章。
参考文章
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