在build.gradle中同時加載espresso網站和核心時，如何解決重復錯誤？

Question

我正在嘗試使用Android Espresso Web進行自動化測試。

將其添加到如下所示的build.gradle文件后，出現“ DuplicateFileException”異常。

根據API ，兩個依賴關系都應該存在於build.gradle文件中，所以我不明白為什么會得到重復異常以及如何解決它。

Error:Execution failed for task ':CompanyAAA:transformResourcesWithMergeJavaResForStagingDebugAndroidTest'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/maven/com.google.guava/guava/pom.properties
     File1: /Users/mayabechler-speicher/CompanyAAA-Android/CompanyAAA/build/intermediates/exploded-aar/com.android.support.test.espresso/espresso-web/2.2.2/jars/classes.jar
     File2: /Users/mayabechler-speicher/CompanyAAA-Android/CompanyAAA/build/intermediates/exploded-aar/com.android.support.test.espresso/espresso-core/2.2.2/jars/classes.jar

[4:24]  
// Espresso core
   androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'

   // Espresso web
   androidTestCompile 'com.android.support.test.espresso:espresso-web:2.2.2'

任何想法如何解決此錯誤？

Answer 1

根據Google的Android測試支持庫示例，如果您現有的應用程序依賴於Web視圖，則無需同時聲明兩者。

檢查此配置：

 apply plugin: 'com.android.application' android { compileSdkVersion 24 buildToolsVersion rootProject.buildToolsVersion defaultConfig { applicationId "com.example.android.testing.espresso.web.BasicSample" minSdkVersion 10 targetSdkVersion 24 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } lintOptions { abortOnError false } productFlavors { } packagingOptions { exclude 'META-INF/maven/com.google.guava/guava/pom.properties' exclude 'META-INF/maven/com.google.guava/guava/pom.xml' } } dependencies { // App dependencies compile 'com.android.support:support-annotations:' + rootProject.supportLibVersion; compile 'com.google.guava:guava:18.0' // Testing-only dependencies // Force usage of support annotations in the test app, since it is internally used by the runner module. androidTestCompile 'com.android.support:support-annotations:' + rootProject.supportLibVersion; androidTestCompile 'com.android.support.test:runner:' + rootProject.runnerVersion; androidTestCompile 'com.android.support.test:rules:' + rootProject.rulesVersion; androidTestCompile 'com.android.support.test.espresso:espresso-web:' + rootProject.espressoVersion; } 

來自： https : //github.com/googlesamples/android-testing/blob/master/ui/espresso/WebBasicSample/app/build.gradle

如果兩者都需要，請打開build.gradle文件並添加：

packagingOptions {
    exclude 'META-INF/maven/com.google.guava/guava/pom.properties'
    exclude 'META-INF/maven/com.google.guava/guava/pom.xml'
}

它應該工作