Is it anyhow possible to use NotificationListenerService for API levels older than 18. I couldn't find any info on that so I thought it's not possible but I just spotted a post on stackoverflow on which someone said it can be done. (here Mr Nagendra said that they have provided support for older versions too) I don't know how to ask him this questions directly so I'm asking it to everyone.
Please help me with this. AccessibilityService is causing a lot of trouble so I'm looking for alternatives. Any help would be really appreciated.