按Ctrl + 左击 所要查看的源码出现：

　　　　The source attachment does not contain the source...

step1:点击 project--->点击properties--->选中 Java Build Path

　　查看Source attachment/Javadoc Location 这两个选项

step2:配置Source attachment/Javadoc Location

　　双击 Source attachment或者选中后点击Edit

　　在External File Path中选中../sdk/sources目录(adt安装目录下)

　　双击Javadoc Location或者选中后点击Edit

　　点击Browse 选中../docs/reference目录(adt安装目录下)

ADT 查看 android 源码 The source attachment does not contain the source