Barry did make the squad for the European Championships, but was forced to withdraw after limping out of a pre-tournament friendly with Norway with a groin injury.
"I am not ready to retire yet and will just keep working hard," he said.
"I am not going to say too much, I just want to work hard to get back. It is tough sometimes to force your way back in, but I have experienced it before.
"I'm confident that when the call comes, the manager knows what I can do and I'm sure that if there's a space for me I will be called upon."