com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileExcep

1 com.Android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/NOTICE.txt

2 com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE.txt

解决办法： 
在gradle中添加如下代码

android {    packagingOptions {//        exclude('META-INF/DEPENDENCIES')//        exclude('META-INF/NOTICE')//        exclude('META-INF/LICENSE')        exclude('META-INF/LICENSE.txt')        exclude('META-INF/NOTICE.txt')    }}
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TransformException提示少了哪个，就添加上哪个，如果exclude('META-INF/LICENSE.txt')不行就试试exclude('META-INF/LICENSE')