Firebase listener when app is in the background

Question

I have a Firebase childAdded event listener for the notifications table in my app that I would like to trigger push notifications when the app is in the backgro

Answer 1

I had the same problem and came across your post months ago. I have managed to finally understand what is required to observe notifications in the background.

I have detailed the solution that I am using in this post https://stackoverflow.com/a/42240984/7048719

The technique is as follows

1. use a custom data service class
2. initialise a sharedInstance of the data service class
3. call the appropriate function in the data service class sharedInstance from your initial view controller.

This way the observer stays in memory

Update: Apple have implemented updates in regards to background modes which have stopped this method from working.