• 安卓windows 的  debug.keystore  文件在哪

The default keystore file: debug.keystore is present in the folder .android which is usually located in the default home folder of your operating system of the user who installed that Android SDK.

In my Ubuntu PC, it’s location is /home/dhananjay/.android

Whereas in the Windows PC it is located at C:\Users\dhananjay\.android

 

• 这个文件是干什么用的？    Signing your app   给应用签名

如何用keytool 生成密钥文件， 以及如何用生成的文件给apk签名， 这个文章讲的很清楚：

https://blog.csdn.net/wngzhem/article/details/78190950