flutter 顶部导航tabbar自定义
2024-09-20 21:27:01
本文使用tabbar实现顶部横向滚动多个菜单。
实现tabbar搜索框功能加功能按钮。
话不多说，上代码!
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_zhihu/kits/color/colorKit.dart'; class TestPage extends StatefulWidget {
@override
_TestPageState createState() => _TestPageState();
} class _TestPageState extends State<TestPage>
with SingleTickerProviderStateMixin {
TabController _tabController; //tabbar控制器，控制顶部tabbar切换
//搜索框控制器，适用于在全局监听搜索框内容。如果不需要全局监听，只使用onChanged onSubmitted即可
TextEditingController _textController;
@override
void initState() {
// TODO: implement initState
super.initState();
_tabController = TabController(length: 9, vsync: this);//初始化控制器
_textController = TextEditingController();
_textController.addListener(() {
print('_textController+${_textController.text}');
});
} @override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Expanded(
child: Icon(
Icons.home,
),
flex: 0,
),
Expanded(
child: Container(
height: 30,
margin: EdgeInsets.fromLTRB(10, 5, 10, 0),
child: TextField(
controller: _textController,
decoration: InputDecoration(
fillColor: ColorKit.hexToColor('#F6F6F6'),
filled: true,
contentPadding: EdgeInsets.fromLTRB(10, 0, 10, 0),
hintText: '请输入搜索内容',
hintStyle: TextStyle(fontSize: 13),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(20),
borderSide: BorderSide.none,
),
),
onChanged: (text){
print('onchanged+$text');
},
onSubmitted: (text){
print('onSubmitted+$text');
},
),
),
flex: 1,
),
Expanded(
child: Icon(Icons.pages),
flex: 0,
),
],
),
bottom: PreferredSize(
preferredSize: Size.fromHeight(35),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Expanded(
flex: 1,
child: Container(
height: 48,
child: TabBar(
indicatorSize: TabBarIndicatorSize.label,
isScrollable: true,
controller: _tabController,
tabs: [
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
Container(
width: 60,
alignment: Alignment.center,
child: Text('退机'),
),
],
),
)),
Expanded(flex: 0, child: Container(
margin: EdgeInsets.fromLTRB(10, 0, 10, 0),
child: Icon(Icons.ac_unit),
))
],
),
),
),
//顶部tabbar页面内容
body: TabBarView(
controller: _tabController,//tabbar控制器
children: [
Text('111111111'),
Text('2222222222'),
Text('333333333'),
Text('111111111'),
Text('2222222222'),
Text('333333333'),
Text('111111111'),
Text('2222222222'),
Text('333333333')
],
),
);
}
}
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