What Java version are you using? My path in the jarsigner setting field is this:
My /usr/bin/jarsigner is a link:
/usr/bin/jarsigner -> /usr/lib/jvm/default/bin/jarsigner
You can check this with this command:
$ ls -l /usr/bin/jarsigner
The target does not exist. I have not cared to investigate why. I can build Android apps fine. If your situation is the same, try to find where the real jarsigner file is.
I am on Manjaro, an Arch Linux variant. So the situation might be different from yours.