android 工程找不到org.apach以及处理

android 6.0地提出使项目在gradle20以后再也找不到org. apach,官方是这样描述的:

Android 6.0 release removes support for the Apache HTTP client. If your app is using this client and targets Android 2.3 (API level 9) or higher, use the HttpURLConnection class instead. This API is more efficient because it reduces network use through transparent compression and response caching, and minimizes power consumption. To continue using the Apache HTTP APIs, you must first declare the following compile-time dependency in your build.gradle file:

如果确实需要。则需要添加库以来：

android {

useLibrary ‘org.apache.http.legacy’

}