Android Studio 错误 Duplicate files copied in APK META-INF/LICENSE.txt

解决方法：编辑build.gradle  并在其中添加如下代码

android {  
      
  
    packagingOptions {  
        exclude 'META-INF/DEPENDENCIES.txt'  
        exclude 'META-INF/LICENSE.txt'  
        exclude 'META-INF/NOTICE.txt'  
        exclude 'META-INF/NOTICE'  
        exclude 'META-INF/LICENSE'  
        exclude 'META-INF/DEPENDENCIES'  
        exclude 'META-INF/notice.txt'  
        exclude 'META-INF/license.txt'  
        exclude 'META-INF/dependencies.txt'  
        exclude 'META-INF/LGPL2.1'  
    }  
}