DuplicateFileException: Duplicate files copied in APK

项目中导入了一些jar包，结果报了这么个错误：DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE

解决办法：在app对应的build.gradle中加入：

android {      packagingOptions {          exclude 'META-INF/DEPENDENCIES'          exclude 'META-INF/NOTICE'          exclude 'META-INF/LICENSE'          exclude 'META-INF/LICENSE.txt'          exclude 'META-INF/NOTICE.txt'      }  }