AS开发中出现Error(十一)——Duplicate files copied in APK META-INF/LICENSE.txt

Duplicate files copied in APK META-INF/LICENSE.txt File 1: /.../libs/httpclient-4.1.1.jar File 2: /.../libs/httpclient-4.1.1.jar

原因：根据（Duplicate files copied in APK）看错这种情况讲的是引用包有冲突，就是可能两个包中有冲突类等等

解决：在app->build.gradle文件中修改

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'    }  }