Navigation

nav2.dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      theme: ThemeData(
          primaryColor: Colors.purple,
          buttonTheme: ButtonThemeData(
            textTheme: ButtonTextTheme.primary,
            buttonColor: Colors.green,
          ),
          textTheme: TextTheme(bodyText2: TextStyle(fontSize: 24))),
      initialRoute: 'Page1',
      namedRoutes: {
        'Page1': GetRoute(page: Page1()),
        'Page2': GetRoute(
            page: Page2(),
            transition: Transition.rotate,
            transitionDuration: Duration(milliseconds: 500)),
        'Page3': GetRoute(page: Page3(), binding: Page3Binding())
      },
    );
  }
}

class Page1 extends StatelessWidget {
  const Page1({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Page 1')),
      backgroundColor: Colors.blue[100],
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text('Parameters demo'),
            RaisedButton(
              onPressed: () async {
                var result = await Get.toNamed(
                    'Page2?message=Hi from Page 1&status=true');
                if (result is String) {
                  Get.snackbar('Returned', result,
                      backgroundColor: Colors.orange);
                }
              },
              child: Text('Page 2'),
            ),
            SizedBox(height: 20),
            Text('Controller demo'),
            RaisedButton(
              onPressed: () => Get.toNamed('Page3', arguments: 'Hi Page 3'),
              child: Text('Page 3'),
            ),
          ],
        ),
      ),
    );
  }
}

class Page2 extends StatelessWidget {
  const Page2({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final String message = Get.parameters['message'];
    final String status = Get.parameters['status'];

    return Scaffold(
        appBar: AppBar(title: Text('Page 2')),
        backgroundColor: Colors.pink[100],
        body: Center(
            child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text('Parameters demo'),
            SizedBox(height: 20),
            Text('$message - $status', style: TextStyle(color: Colors.red)),
            SizedBox(height: 20),
            RaisedButton(
                onPressed: () => Get.back(result: 'Hi back'),
                child: Text('Get back')),
          ],
        )));
  }
}

class Page3 extends StatelessWidget {
  const Page3({Key key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    String message = Get.arguments;
    return GetBuilder<Page3Controller>(
      builder: (controller) => Scaffold(
          appBar: AppBar(title: Text('Page 3')),
          backgroundColor: Colors.purple[100],
          body: Center(
              child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Text('Agruments demo'),
              SizedBox(height: 20),
              Text('Page: $message', style: TextStyle(color: Colors.red)),
              SizedBox(height: 20),
              Text(controller.getArgs(), style: TextStyle(color: Colors.blue)),
              SizedBox(height: 20),
              RaisedButton(
                  onPressed: () => controller.getOff(), child: Text('Return')),
            ],
          ))),
    );
  }
}

class Page3Controller extends GetController {
  onInit() {
    print(Get.arguments);
  }

  getArgs() {
    return 'Controller: ${Get.arguments}';
  }

  getOff() {
    Get.offAllNamed('Page1');
  }
}

class Page3Binding implements Bindings {
  @override
  void dependencies() {
    Get.lazyPut<Page3Controller>(() => Page3Controller());
  }
}