Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'

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异常描述

Android Studio 编译运行的时候，出现以下错误：
这里写图片描述

Error:Executionfailedfortask’:app:transformResourcesWithMergeJavaResForDebug’.
com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/rxjava.properties

File1:C:\Users\10648.gradle\caches\modules-2\files-2.1\io.reactivex.rxjava2\rxjava\2.0.0\5151c737c01616c372c3d00ab145868ede10e826\rxjava-2.0.0.jar
File2:C:\Users\10648.gradle\caches\modules-2\files-2.1\io.reactivex\rxjava\1.1.6\2586312cd2b8a511e4c6236736f5a039fc0f2273\rxjava-1.1.6.jar

问题分析

这个问题，google搜索一下，就会发现：
2.x: Duplicated file rxjava.properties #4445

截图：
这里写图片描述

解决

在你的 app/build.gradle 添加如下代码：

android {    ...    packagingOptions {        exclude 'META-INF/rxjava.properties'    }}

如果你还是不知道添加到什么地方，请继续往下看：

修改前 :

apply plugin: 'com.android.application'android {  compileSdkVersion 25  buildToolsVersion "25.0.2"  defaultConfig {    applicationId "com.kite.cloudlearn"    minSdkVersion 19    targetSdkVersion 25    versionCode 1    versionName "1.0"    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"  }  buildTypes {    release {      minifyEnabled false      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }  }  // dataBinding 加入  dataBinding {    enabled = true  }}dependencies {  compile fileTree(include: ['*.jar'], dir: 'libs')  androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {    exclude group: 'com.android.support', module: 'support-annotations'  })  compile 'com.android.support:appcompat-v7:25.3.1'  compile 'com.android.support:design:25.3.1'  compile 'com.android.support.constraint:constraint-layout:1.0.2'  testCompile 'junit:junit:4.12'  compile 'com.github.bumptech.glide:glide:3.8.0'  compile 'com.squareup.retrofit2:retrofit:2.3.0'  compile 'com.squareup.okhttp3:logging-interceptor:3.8.0'  compile 'com.squareup.retrofit2:converter-gson:2.3.0'  compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'  compile 'io.reactivex:rxandroid:1.2.1'}

修改后：

apply plugin: 'com.android.application'android {  compileSdkVersion 25  buildToolsVersion "25.0.2"  packagingOptions {    exclude 'META-INF/rxjava.properties'  }  defaultConfig {    applicationId "com.kite.cloudlearn"    minSdkVersion 19    targetSdkVersion 25    versionCode 1    versionName "1.0"    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"  }  buildTypes {    release {      minifyEnabled false      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }  }  // dataBinding 加入  dataBinding {    enabled = true  }}dependencies {  compile fileTree(include: ['*.jar'], dir: 'libs')  androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {    exclude group: 'com.android.support', module: 'support-annotations'  })  compile 'com.android.support:appcompat-v7:25.3.1'  compile 'com.android.support:design:25.3.1'  compile 'com.android.support.constraint:constraint-layout:1.0.2'  testCompile 'junit:junit:4.12'  compile 'com.github.bumptech.glide:glide:3.8.0'  compile 'com.squareup.retrofit2:retrofit:2.3.0'  compile 'com.squareup.okhttp3:logging-interceptor:3.8.0'  compile 'com.squareup.retrofit2:converter-gson:2.3.0'  compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'  compile 'io.reactivex:rxandroid:1.2.1'}

后续

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