[SOLVED] Flutter Siri Integration: App not launching and navigating to page

I have a Flutter application where I use GetX for state management. In the project, I want to integrate Siri. When I say "Open Homework MyApp" to Siri, I want the app to open and navigate to the homework page. To achieve this, I used intents and shortcuts on Apple's side, and I tried to handle navigation using MethodChannel.

When I follow the process through debugging, this is how the scenario unfolds: I open Siri and say the phrase, I can track the prints and breakpoints I've set, and I see the log as shown below. However, the app doesn't open and navigate immediately. But when I manually open the app, the navigation starts.

What I want to achieve is for the app to open and navigate to the relevant page as soon as the phrase is said. I'm including the intent, shortcut, app delegate, and MethodChannel code I've written on the Flutter side.

AppDelegate:

import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  private let navigationChannel = "com.example.myapp/navigation"
 
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    setupSiriShortcuts(application: application)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
 
  private func setupSiriShortcuts(application: UIApplication) {
    let activity = NSUserActivity(activityType: "com.example.myapp.openhomework")
    activity.title = "Open Homework Page"
    activity.isEligibleForSearch = true
    activity.isEligibleForPrediction = true
    activity.isEligibleForPublicIndexing = true
    activity.persistentIdentifier = NSUserActivityPersistentIdentifier("com.example.myapp.openhomework")
    activity.userInfo = ["intentName": "openHomeworkPage"]
    
    self.userActivity = activity
    application.userActivity = activity
  }
 
  override func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
    if userActivity.activityType == "com.example.myapp.openhomework",
       let viewController = window.rootViewController as? FlutterViewController {
      let navigationChannel = FlutterMethodChannel(name: self.navigationChannel, binaryMessenger: viewController.binaryMessenger)
      
        application.windows.first?.makeKeyAndVisible()
        
        navigationChannel.invokeMethod("openHomeworkPage", arguments: nil)
        
    
      
    }
    return true
  }
}

Intent:

import Foundation
import AppIntents
import Flutter

@available(iOS 16.0, *)
struct OpenHomeworkPageIntent: AppIntent {
    static let title: LocalizedStringResource = "Open Homework MyApp"
    
    func perform() async throws -> some IntentResult & ProvidesDialog {
        print("Perform function started.")
        
         guard let windowScene = await UIApplication.shared.connectedScenes.first as? UIWindowScene,
               let viewController = await windowScene.windows.first?.rootViewController as? FlutterViewController else {
             return .result(dialog: "Error: App not started.")
          }
        
        
        let navigationChannel = await FlutterMethodChannel(name: "com.example.myapp.openhomework", binaryMessenger: viewController.binaryMessenger)
        
        // Dispatch the invokeMethod call on the main thread
        DispatchQueue.main.async {
            print("Invoking openHomeworkPage method.")
        
            navigationChannel.invokeMethod("openHomeworkPage", arguments: nil)
        }
        
        print("Perform function completed.")
        return .result(dialog: "Homework page open.")
    }
}

Shortcut:

import Foundation
import AppIntents

@available(iOS 16.0, *)
struct OpenHomeworkPageShortcuts: AppShortcutsProvider {
    static var appShortcuts: [AppShortcut] {
        AppShortcut(
         intent: OpenHomeworkPageIntent(),
         phrases: [
            "Open homework \(.applicationName)"
         ],
         shortTitle: "Homework open"
        )
    }
}

MethodChannel in flutter:

static const platform = MethodChannel('com.example.myapp.openhomework');

  @override
  void initState() {
    platform.setMethodCallHandler(_handleMethodCall);
  }


  Future<void> _handleMethodCall(MethodCall call) async {
    print("methodChannel: ${call.method} ${call.arguments}");

    switch (call.method) {
      case 'openHomeworkPage':
        try {
          print("Navigating to HomeworkScreen...");
          Get.offNamed(AppNavigation.HOMEWORK);
        } catch (e) {
          print("Error navigating to HomeworkScreen: $e");
        }
        break;
      default:
        print('Unknown method: ${call.method}');
    }
  }

Debug Log:

-[WFBackgroundShortcutRunner runWorkflowWithDescriptor:request:inEnvironment:runningContext:completion:] Disabling privacy prompts because this is an on-the-fly shortcut.
Starting shortcut run: <WFWorkflow: 0xa660a9180, name: Open homework Metodbox , actions: 1>, request: <WFSiriWorkflowRunRequest: 0xa66114780, runSource: siri, input: no, presentationMode: Siri, output behavior: Ignore, automationType: (null), allowsHandoff: no, allowsDialogNotifications: no>
Running action <WFLinkAction: 0x102a7caf0, identifier: com.bkmobil.metodboxxx.OpenHomeworkPageIntent>
Action finished running <WFLinkAction: 0x102a7caf0, identifier: com.bkmobil.metodboxxx.OpenHomeworkPageIntent>.
Shortcut <private> has finished running with output: (null).
-[WFBackgroundShortcutRunner callWorkflowRunningCompletionBlockWithResult:] Workflow Did Finish: Calling Completion Block
-[WFBackgroundShortcutRunner listener:shouldAcceptNewConnection:]_block_invoke XPC connection invalidated
-[WFBackgroundShortcutRunnerStateMachine invalidateWithReason:] connection invalidated/interrupted while finishing shortcut or exiting runner. Exiting should already be in process, not transitioning.
-[WFBackgroundShortcutRunner unaliveProcess]_block_invoke_2 Exiting process
flutter: methodChannel: openHomeworkPage null
flutter: Navigating to HomeworkScreen...
[GETX] REPLACE ROUTE /main
[GETX] NEW ROUTE /splash

Flutter doctor summary:

I tried deeplink instead of methodChannel, I tried to do it directly with appIntents, but I finally decided against the shortcut. What I want to achieve is for the app to open and navigate to the relevant page as soon as the phrase is said.