android运行时出现Re-installation failed due to different application signatures时，解决办法

Android运行时出现下面的错误：

[2013-04-06 00:13:42 - BaiduMapsApiDemo] Re-installation failed due to different application signatures.

[2013-04-06 00:13:42 - BaiduMapsApiDemo] You must perform a full uninstall of the application. WARNING: This will remove the application data!
[2013-04-06 00:13:42 - BaiduMapsApiDemo] Please execute 'adb uninstall baidumapsdk.demo' in a shell.

[2013-04-06 00:13:42 - BaiduMapsApiDemo] Launch canceled!

解决办法：

一、cmd下，进入命令行,cd到SDK下的platform-tools 下，执行命令：adb uninstall 应用程序的包名

    结果success后，重新运行就可以了

    如 E:\android\android-sdk-windows\platform-tools> adb uninstall com.wtt

         Success

二、卸载掉手机上已经装了的和该程序同名的应用程序即可