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| import 'package:flutter/material.dart';
class WrapDemoPage extends StatefulWidget { @override State<StatefulWidget> createState() => new _WrapDemoPagePageState(); }
class _WrapDemoPagePageState extends State<WrapDemoPage> { @override void initState() { super.initState(); }
Widget build(BuildContext context) { return Scaffold( appBar: new AppBar( title: new Text('Wrap Demo'), ),
body: Align( alignment: Alignment.topCenter, child: Wrap( spacing: 10.0, runSpacing: 5.0, direction: Axis.horizontal, alignment: WrapAlignment.start, children: <Widget>[ MyButton("西游记"), MyButton("三国演义"), MyButton("红楼梦"), MyButton("水浒传"), MyButton("史记"), MyButton("资治通鉴"), MyButton("天龙八部"), ], )), ); } }
class MyButton extends StatelessWidget { final text;
MyButton(this.text);
@override Widget build(BuildContext context) { return Container( margin: EdgeInsets.only(left: 3.0, right: 3.0), child: OutlineButton( borderSide: BorderSide( color: Colors.blueAccent, width: 2.0, style: BorderStyle.solid), disabledBorderColor: Colors.grey, highlightedBorderColor: Colors.redAccent, onPressed: () { Scaffold.of(context).showSnackBar(new SnackBar( content: new Text(text), action: new SnackBarAction( label: "撤回", onPressed: () {}, ), )); }, child: Text(text), )); } }
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