Android--the package conflicts with an existing package by the same name(安装包与已具有的包名冲突)

原      因: Android签名验证出错,  android studio打成(apk)包之后,apk此刻应已签名,在完成检测更新功能时,需重新安装apk,此时android studio项目中配置的签名会验证apk签名,不一致就报此异常.
解决方法:配置签名,与apk签名一致,解决!

Android--the package conflicts with an existing package by the same name(安装包与已具有的包名冲突)