eclipse 执行模拟器时报Re-installation failed due to different application

[2013-09-28 09:08:09 - ApiDemos] Re-installation failed due to different

application signatures.
[2013-09-28 09:08:09 - ApiDemos] You must perform a full uninstall of the

application. WARNING: This will remove the application data!
[2013-09-28 09:08:09 - ApiDemos] Please execute 'adb uninstall

com.example.android.apis' in a shell.
[2013-09-28 09:08:10 - ApiDemos] Launch canceled!

---解决办法：在对应的adb.exe目录下，cmd执行adb uninstall

com.example.android.apis，即可解决；

其中这里有个系统环境变量，可以在任何目录下执行adb命令，不需在adb.exe目录下执行。

系统环境变量设置：我的电脑属性--->环境变量-->系统环境变量内path，在path最后增加

adb.exe目录即可。