Duplicate files copied in APK META-INF/LICENSE

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android 项目编译时，出现如下错误：

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

解决方案：
在module（APP） 目录下，修改 build.gradle 文件，添加如下内容：

android{

    .....
    //添加的内容
    packagingOptions {
        exclude 'META-INF/LICENSE'

        //下面的内容可解决类似的错误，如： Duplicate files copied in APK META-INF/DEPENDENCIES 等等，根据报错内容选择添加
        exclude 'META-INF/DEPENDENCIES.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/dependencies.txt'
        exclude 'META-INF/LGPL2.1'
    }
}

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