[flutter] pushNamed를 활용한 navigator 사용법.

멀티페이지 구현방법

main.dart

import 'package:flutter/material.dart';
import 'ScreenA.dart';
import 'ScreenB.dart';
import 'ScreenC.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      initialRoute: '/',
      routes: {
        '/': (context) => ScreenA(),
        '/b': (context) => ScreenB(),
        '/c': (context) => ScreenC()
      },
    );
  }
}

ScreenA.dart

import 'package:flutter/material.dart';

class ScreenA extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('ScreenA'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
                child: Text('Go to ScreenB'),
                onPressed: () {
                  Navigator.pushNamed(context, '/b');
                }),
            ElevatedButton(
                child: Text('go to ScreenC'),
                onPressed: () {
                  Navigator.pushNamed(context, '/c');
                }),
          ],
        ),
      ),
    );
  }
}

ScreenB.dart

import 'package:flutter/material.dart';

class ScreenB extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('ScreenB'),
      ),
      body: Center(
        child: Text(
          'ScreenB',
          style: TextStyle(fontSize: 24.0),
        ),
      ),
    );
  }
}

ScreenC.dart

import 'package:flutter/material.dart';

class ScreenC extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('ScreenC'),
      ),
      body: Center(
        child: Text(
          'ScreenC',
          style: TextStyle(fontSize: 24.0),
        ),
      ),
    );
  }
}

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