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_
If the above step does not work, copy the unsigned-release-apk.apk file and keystore file in C:\Program Files\java\jdk_version\bin\ and run cmd as an administrator and navigate to C:\Program Files\java\jdk_version\bin\
Now your jarsigner will work successfully.