Android Studio 导入External Libraries导入本地Libraries在线导入Libraries
导入本地Libraries1 拷贝 gson-2.3.1.jar（gson-2.3.1.jar为例）到 app/libs 目录下2 在app/build.gradle的 dependencies 中增加一行：compile files('libs/gson-2.3.1.jar')在线导入LibrariesFile > Project Structure > Dependencies
