Android Studio 运行出现 Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.

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本文出自:【Edwin博客园】

我引用compile 'com.squareup.retrofit2:converter-jackson:2.1.0'Gradle没有错误，运行APP就出了这个error。

错误日志：Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE

解决方法如下：

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.3"
    defaultConfig {
        applicationId "com.edwin.xxxx"
        minSdkVersion 19
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    packagingOptions{
        exclude 'META-INF/NOTICE' // will not include NOTICE file
        exclude 'META-INF/LICENSE' // will not include LICENSE file
        // as noted by @Vishnuvathsan you may also need to include
        // variations on the file name. It depends on your dependencies.
        // Some other common variations on notice and license file names
        exclude 'META-INF/notice'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license'
        exclude 'META-INF/license.txt'
    }
}