Scenario : Shared/Sync'd Realm. iOS/Swift App with multiple views.
What is the best practice design pattern I should use to in order to maintain synchronisation in the background - and - provide automatic (real time) updates to multiple views?
Looking at the extra task app - this makes sense but the app really only has one active view. What if I have multiple views?
Should I destroy the Realm notification of data change and rebuild for each view?
The recommended way is the same as for a single view controller. Get a Results object for each view controller and use it directly as a data source. You can observe that Results object using Realm's notification mechanism. A notification fires when changes affecting Results any changes are committed from a background thread. The Results object has been updated to the latest state automatically, what you should do is just updating the UI.
You may use Observer pattern. Also if you use CoreData for your models, then it's very easy too to get the update/insert/delete callback and update your view accordingly.
Observer Pattern in iOS: https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/KeyValueObserving/KeyValueObserving.html
Get more details about CoreData here : https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CoreData/index.html?utm_source=iosstash.io
