How to fetch Coredata List in IntentHandler class (WidgetKit-SwiftUI)?

Question

I am not able to fetch data in my IntentHandler class. My Goal is select Todo from the CoreData list and display it in Widget.

I am trying to display a list from CoreData in Widget Intent and I am expecting to resolve this issue.

extension IntentHandler : ConfigurationIntentHandling {
    func provideTodoNameOptionsCollection(for intent: ConfigurationIntent, searchTerm: String?, with completion: @escaping (INObjectCollection<TodoData>?, Error?) -> Void) {
        var arrTodoData = [TodoData]()
        coreDH.getAllTodos().forEach { todos in
            let todoIntent = TodoData(identifier: todos.id?.uuidString, display: todos.name ?? "")
            arrTodoData.append(todoIntent)
        }
        let collection = INObjectCollection(items: arrTodoData)
        completion(collection, nil)
    }
}

class IntentHandler: INExtension{
    let coreDH = CoreDataHandler.shared
    override func handler(for intent: INIntent) -> Any {
        // This is the default implementation.  If you want different objects to handle different intents,
        // you can override this and return the handler you want for that particular intent.
        return self
    }
}

Answer 1

If your IntentHandler doesn't get called:

• Ensure your Widget uses IntentConfiguration not StaticConfiguration
• Ensure your time line provider conforms to IntentTimelineProvider
• Run the app scheme, then run the intent scheme, you should be able to debug and breakpoints would work.
• Widgets Code-along, part 3: Advancing timelines (5:31)
• Add Configuration and Intelligence to Your Widgets

If you need to share data between your app and extension:

• App's data is sandboxed and is not accessible by extension
• Configure App Groups and you could create core data file in the shared container to be able to access in your extension
• If App and Extension use exactly the same data you could use the same sqlite file in the shared container (both app and extension would have access to it)
• If App and Extension use different data and there is only a small portion that is common, then use History Tracking
• Configuring App Groups
• Consuming Relevant Store Changes