i\'m trying to check if my signed release apk is really signed. But following some tutorials, or the single i\'ve found .
$ jarsigner -verify -verbose -certs my_
Solution: Add android jdk bin folder to your path in environment variables.
Instructions:
1- Right click on "This PC" > right-click Properties > Advanced system settings > Environment Variables > select PATH then EDIT.
2- Add your jdk bin folder path to environment variables, it should look like this:
"C:\Program Files\Java\jdk1.8.0_40\bin".