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手动输入代码太辛苦， 拼敲键盘速度？ 赶快试用代码补全功能吧。

例如在创建dart文件后， 文件内容是空的。 这时有代码模块就方便多了， 在文件中输入stateful后点击回车代码就出来了。

import 'package:flutter/material.dart';class $CUSTOMWIDGET$ extends StatefulWidget {  $CUSTOMWIDGET$({Key key, this.title}) : super(key: key);  // This widget is the home page of your application. It is stateful, meaning  // that it has a State object (defined below) that contains fields that affect  // how it looks.  // This class is the configuration for the state. It holds the values (in this  // case the title) provided by the parent (in this case the App widget) and  // used by the build method of the State. Fields in a Widget subclass are  // always marked "final".  final String title;  @override  _$CUSTOMWIDGET$State createState() => new _$CUSTOMWIDGET$State();}class _$CUSTOMWIDGET$State extends State<$CUSTOMWIDGET$> with WidgetsBindingObserver {  AppLifecycleState _lastLifecycleState;    @override  void dispose() {    super.dispose();    WidgetsBinding.instance.removeObserver(this);  }  @override  void didChangeAppLifecycleState(AppLifecycleState state) {    _lastLifecycleState = state;  }  @override  void initState() {    super.initState();    WidgetsBinding.instance.addObserver(this);  }    void _onPressed() {  }  @override  Widget build(BuildContext context) {    // This method is rerun every time setState is called, for instance as done    // by the _incrementCounter method above.    //    // The Flutter framework has been optimized to make rerunning build methods    // fast, so that you can just rebuild anything that needs updating rather    // than having to individually change instances of widgets.    return new Scaffold(      appBar: new AppBar(        // Here we take the value from the MyHomePage object that was created by        // the App.build method, and use it to set our appbar title.        title: new Text(widget.title),      ),      body: new Center(        // Center is a layout widget. It takes a single child and positions it        // in the middle of the parent.        child: new Column(          // Column is also layout widget. It takes a list of children and          // arranges them vertically. By default, it sizes itself to fit its          // children horizontally, and tries to be as tall as its parent.          //          // Invoke "debug paint" (press "p" in the console where you ran          // "flutter run", or select "Toggle Debug Paint" from the Flutter tool          // window in IntelliJ) to see the wireframe for each widget.          //          // Column has various properties to control how it sizes itself and          // how it positions its children. Here we use mainAxisAlignment to          // center the children vertically; the main axis here is the vertical          // axis because Columns are vertical (the cross axis would be          // horizontal).          mainAxisAlignment: MainAxisAlignment.center,          children: 
   
    [            new Text(              'You have pushed the button this many times:',            ),            new Text(              'test',              style: Theme.of(context).textTheme.display1,            ),          ],        ),      ),      floatingActionButton: new FloatingActionButton(        onPressed: _onPressed,        tooltip: 'Increment',        child: new Icon(Icons.add),      ), // This trailing comma makes auto-formatting nicer for build methods.    );  }}
   

对应Android写各种Adapter时， 往往还要右键点击“implement method”实现抽象方法。

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