jarsigner -verify -verbose -certs my_application.apk on my apk to check whether it was signed in debug or release mode. This is a part of the result:
X.509, C=US, O=Android, CN=Android Debug
The apk should be ready for Store submission, thus signed in release mode. I can’t seem to find any command for this, i believe the default behavior should be for it to be signed in release mode.
I can’t upload it the Play Store because of this.
Thanks in advance for any help!