How can I "push" a UIViewController from FlutterViewController

Question

I want to "push" a new native view (Activity as in Android & UIViewController as in iOS) upon our Flutter view, and after that new native view is completed/finished, make screen come back to our Flutter view.

I can do this in Android. But I'm very new to iOS, when I try to do this in ios/Runner/AppDelegate.m:

  SwiftViewController *swiftViewController = [controller.storyboard instantiateViewControllerWithIdentifier:@"SwiftViewController"];
  [(FlutterViewController *)self.window.rootViewController pushViewController:swiftViewController animated:YES];

It gives error:

No visible @interface for "FlutterViewController" declared the selector 'pushViewController:animated'

So how to do it in iOS? Thanks

Answer 1

In Swift, We can open native iOS viewController from a flutter action event using the method channel, In flutter, you need to add the following lines to trigger the native iOS method. Add these lines in your action method

var platform = const MethodChannel('navigation');
final String result = await platform.invokeMethod('IOS');

In iOS, add the following lines in the AppDelegate application method.

let controller : FlutterViewController = window?.rootViewController as! FlutterViewController
let methodChannel = FlutterMethodChannel(name: "navigation", binaryMessenger:controller.binaryMessenger)
navigationController = UINavigationController(rootViewController: controller)
navigationController.setNavigationBarHidden(true, animated: false)
self.window!.rootViewController = navigationController
self.window!.makeKeyAndVisible()
methodChannel.setMethodCallHandler({
    (call: FlutterMethodCall, result: @escaping FlutterResult) -> 
    Void in
if call.method == "IOS" {
      let vc = "Your viewController"(nibName: "Your 
      viewController", bundle: nil)
      navigationController.pushViewController(vc, animated: 
     false)
} else {
         result(FlutterMethodNotImplemented)
         return
}
})

Native view controller back button action.

self.navigationController?.popViewController(animated: true)

Thank you.