android listening to notifications -

i'm developing app in want listen notifications app on phone. i'm pretty new android development, guidance appreciated.

my thought need create service extends accessibilityservice , implement onaccessibilityevent.

i'm not sure how connect service app notifications want listen to...

you cannot "connect service app notifications want listen to" -- all notifications all apps, because point behind accessibilityservice provide accessibility features. blind user not blind 1 app, apps.

that being said, welcome examine accessibilityevent see came from.