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74 lines
2.3 KiB
Dart
74 lines
2.3 KiB
Dart
/**
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* Created with Android Studio.
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* User: ryan
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* Date: 2019/1/1
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* Time: 下午11:11
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* email: zhu.yan@alibaba-inc.com
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* tartget: ButtonBar 的示例
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*/
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import 'package:flutter/material.dart';
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/*
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* ButtonBar 默认的实例
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* */
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class ButtonBarFullDefault extends StatefulWidget {
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const ButtonBarFullDefault() : super();
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@override
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State<StatefulWidget> createState() => _ButtonBarFullDefault();
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}
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/*
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* ButtonBar 默认的实例,有状态
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* */
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class _ButtonBarFullDefault extends State {
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@override
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Widget build(BuildContext context) {
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return ButtonBar(
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// ... // 如果没有,就是不需要有状态的 StatefulWidget
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);
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}
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}
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/*
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* ButtonBar 默认的实例,无状态
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* */
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class ButtonBarLessDefault extends StatelessWidget {
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final widget;
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final parent;
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const ButtonBarLessDefault([this.widget, this.parent])
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: super();
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@override
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Widget build(BuildContext context) {
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return Container(
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margin: EdgeInsets.symmetric(vertical: 0.0),
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height: 100.0,
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child: Scrollbar(child:ListView(
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scrollDirection: Axis.horizontal, // 水平listView
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children: <Widget>[
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ButtonBar(
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alignment: MainAxisAlignment.spaceAround, //布局方向，默认MainAxisAlignment.end
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mainAxisSize: MainAxisSize.max, //主轴大小，默认MainAxisSize.max
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children: <Widget>[ // Button集合
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RaisedButton(child: Text('ButtonBar1'),color: Colors.red,onPressed: ()=>{},),
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RaisedButton(child: Text('ButtonBar2'),color: Colors.red,onPressed: ()=>{},),
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RaisedButton(child: Text('ButtonBar3'),color: Colors.red,onPressed: ()=>{},),
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],
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),
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ButtonBar(
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alignment: MainAxisAlignment.end, //布局方向，默认MainAxisAlignment.end
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mainAxisSize: MainAxisSize.min, //主轴大小，默认MainAxisSize.max
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children: <Widget>[ // Button集合
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RaisedButton(child: Text('ButtonBar1'),color: Colors.yellow,onPressed: ()=>{},),
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RaisedButton(child: Text('ButtonBar2'),color: Colors.yellow,onPressed: ()=>{},),
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RaisedButton(child: Text('ButtonBar3'),color: Colors.yellow,onPressed: ()=>{},),
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],
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)
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]
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)
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));
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}
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} |