This app was mentioned in 5 comments, with an average of 1.60 upvotes
Here are two apps I found via a quick Google search of "SSID Notification bar".
Ypu can try this: https://play.google.com/store/apps/details?id=et.nWifiManager
Or use a wifi toggle widget on your home screen.
Is this maybe a solution? https://play.google.com/store/apps/details?id=et.nWifiManager
Also do you have a OpenMesh based WiFi Solution or just AP's with the same SSID and Passwords?
hmm, this may be what you're after?