flutter ui

快速生成无状态模板

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      
    );
  }
}

快速生成有状态模板

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return Container(
      
    );
  }
}

1.`MaterialApp`

脚手架模板

有状态

import 'package:flutter/material.dart';


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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text("测试"),
        ),
        body:Center(child: Text('data'),)
      ),
    );
  }
}

`2.Scaffold`

脚手架

`3.`AppBar

标题行

return Scaffold(
      appBar: AppBar(
        leading: IconButton(icon: Icon(Icons.arrow_back), onPressed: () {}),
        title: Text('AppBar'),
        actions: <Widget>[
          IconButton(icon: Icon(Icons.add), onPressed: () {}),
          IconButton(icon: Icon(Icons.add), onPressed: () {}),
        flexibleSpace: Container(
          color: Colors.red,
        ),
        bottom: PreferredSize(
          child: Container(
            height: 50,
             double.infinity,
            color: Colors.grey,
            child: Text('bottom'),
          ),
          preferredSize: Size(30, 100),
        ),
      ),
    );