导航栏-1

 

 

import 'package:flutter/material.dart';

class AppBarDemoPage extends StatelessWidget {

  const AppBarDemoPage({Key? key}) : super(key: key);

  @override

  Widget build(BuildContext context) {

    return Scaffold(

      appBar: AppBar(

        title: Text("AppBarDemoPage"),

        // backgroundColor: Colors.red,  // 背景颜色

        centerTitle: true, // 文字居中

        leading: IconButton(

          icon: Icon(Icons.menu),

          onPressed: () {

            print('menu');

          },

        ),

        actions: [

          IconButton(

            icon: Icon(Icons.search),

            onPressed: () {

              print('search');

            },

          ),

          IconButton(

            icon: Icon(Icons.settings),

            onPressed: () {

              print('settings');

            },

          ),

        ],

      ),

      body: Text('登录页面'),

    );

  }

}