Android开发调试Installation failed since the device possibly has stale dexed jars

今天写完代码运行时,出现了程序安装失败的对话框:

Installation failed since the device possibly has stale dexed jars that don't match the current version (dexopt error). In order to proceed, you have to uninstall the existing application.

WARNING: Uninstalling will remove the application data!

Do you want to uninstall the existing application?

已运行就是这样,死活没办法,最后搞了一晚上,终于找到了答案,AndroidStudio-> Build -> Clean Projects  然后等下面任务完成后,重新运行就可以了。

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