解决新版AndroidStudio 导入HttpClient冲突

HttpClient虽然已经被Google抛弃，但是有限项目依然依赖这些库，还得用。我把Httpclient的所有库导入项目后，会产生如下错误。

Error:duplicate files during packaging of APK F:\Downloads\MyApplication7\app\build\outputs\apk\app-debug-unaligned.apk

Path in archive: META-INF/DEPENDENCIES

Origin 1: F:\Downloads\MyApplication7\app\libs\httpclient-4.5.2.jar

Origin 2: F:\Downloads\MyApplication7\app\libs\httpcore-4.4.4.jar

经过查找可以在文件中加入以下代码消除这个问题。

packagingOptions {    exclude 'META-INF/DEPENDENCIES'    exclude 'META-INF/NOTICE'    exclude 'META-INF/LICENSE'    exclude 'META-INF/LICENSE.txt'    exclude 'META-INF/NOTICE.txt'    exclude 'META-INF/ASL2.0'    exclude 'META-INF/notice.txt'}