플러터 다트(dart) Navigator(네비게이터)(2022.04.28)

import 'package:flutter/material.dart';

void main() => runApp(MyApp());


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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "MyApp",
      theme: ThemeData(
        primaryColor: Colors.blue
      ),
      home: MyPage(),
    );
  }
}

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

  @override
  Widget build(BuildContext context2) {
    return Scaffold(
      appBar: AppBar(
        title: Text('First page'),

      ),
    body: Center(
      child: RaisedButton(
        child: Text("Go to the Second Page"),
        onPressed: (){
          Navigator.push(context2, MaterialPageRoute(
            builder: (context) => SecondPage()
          ));
        },
      ),
    ),
      );
  }
}

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

  @override
  Widget build(BuildContext ctx) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Second page'),

      ),
      body: Center(
        child: RaisedButton(
          child: Text("Go to the First Page"),
          onPressed: (){
            Navigator.pop(ctx);
          },
        ),
      ),
    );
  }
}