deeplinkdemo.dart

class DeeplinkExample extends StatefulWidget {
  @override
  _DeeplinkExampleState createState() => _DeeplinkExampleState();
}

class _DeeplinkExampleState extends State<DeeplinkExample> {
  late NavStackController _controller;
  @override
  void initState() {
    super.initState();
    RawKeyboard.instance.addListener((value) {
      if (value is RawKeyDownEvent) {
        if (value.logicalKey == LogicalKeyboardKey.digit1) _controller.path = "/";
        if (value.logicalKey == LogicalKeyboardKey.digit2) _controller.path = "/family/sells";
        if (value.logicalKey == LogicalKeyboardKey.digit3) _controller.path = "/family/sells/person/chris";
      }
    });
  }

  @override
  Widget build(BuildContext context) => MaterialApp.router(
        routeInformationParser: NavStackParser(),
        routerDelegate: NavStackDelegate(
          onGenerateStack: (context, nav) {
            _controller = NavStackController.of(context);
            return PathStack(
              routes: {
                const ['/']: StackRouteBuilder(
                  builder: (context, args) => FamiliesPage(),
                ),
                const ['/family/:fid']: StackRouteBuilder(
                  builder: (context, args) {
                    final fid = args['fid'];
                    //final family = families.singleWhereOrNull((f) => f.id == fid);
                    //if (family == null) return Four04Page(message: 'unknown family $fid');
                    return FamilyPage(fid: fid);
                  },
                ),
                const ['/family/:fid/person/:pid']: StackRouteBuilder(
                  builder: (context, args) {
                    final fid = args['fid'];
                    //final family = families.singleWhereOrNull((f) => f.id == fid);
                    //if (family == null) return Four04Page(message: 'unknown family $fid');
                    final pid = args['pid'];
                    //final person = family.people.singleWhereOrNull((p) => p.id == pid);
                    //if (person == null) return Four04Page(message: 'unknown person $pid for family $fid');
                    return PersonPage(fid: fid, pid: pid);
                  },
                ),
              },
            );
          },
        ),
        title: 'Flutter Deep Linking Demo',
      );
}

class Four04Page extends StatelessWidget {
  const Four04Page({Key? key, required this.message}) : super(key: key);
  final String message;

  @override
  Widget build(BuildContext context) {
    return Center(child: Text("404"));
  }
}

class PersonPage extends StatelessWidget {
  const PersonPage({Key? key, required this.fid, required this.pid}) : super(key: key);
  final String? fid;
  final String? pid;

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text("Person Page, fid=$fid, pid=$pid"),
    );
  }
}

class FamiliesPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text("Families Page"),
    );
  }
}

class FamilyPage extends StatelessWidget {
  const FamilyPage({Key? key, required this.fid}) : super(key: key);
  final String? fid;

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Text("FamilyPage, fid: $fid"),
    );
  }
}