解决方案：
a.先把eclipse关闭.
b.在命令提示符中转到你的android SDK 的platform-tools下
c.键入adb kill-server
d.再输入 adb start-server

Android :The connection to adb is down, and a severe error has occured.,布布扣,bubuko.com

Android :The connection to adb is down, and a severe error has occured.