问题：android启动项目报如下错误错。
[2014-10-15 16:42:13 - myAndroid] ------------------------------
[2014-10-15 16:42:13 - myAndroid] Android Launch!
[2014-10-15 16:42:13 - myAndroid] The connection to adb is down, and a severe error has occured.
[2014-10-15 16:42:13 - myAndroid] You must restart adb and Eclipse.
[2014-10-15 16:42:13 - myAndroid] Please ensure that adb is correctly located at 'D:\Tools\Android Eclipse\sdk\sdk\platform-tools\adb.exe' and can be executed.
原因：端口冲突或有多个模拟器在运行。
解决1：打开Windows任务管理器，结束kabd.exe 进程；重启开发工具eclipse。
解决2：重启电脑。