Flutter 在颤振中切换按钮值显示
向所有人致意 我希望在单击切换按钮时显示并存储该按钮中使用的值。 在这里,我有点不知所措 下面是我制作切换按钮的代码-:Flutter 在颤振中切换按钮值显示,flutter,flutter-layout,android-togglebutton,Flutter,Flutter Layout,Android Togglebutton,向所有人致意 我希望在单击切换按钮时显示并存储该按钮中使用的值。 在这里,我有点不知所措 下面是我制作切换按钮的代码-: import 'package:flutter/material.dart'; import 'package:hitch_fun1/Components/constants.dart'; import 'package:hitch_fun1/Components/Reusable_card.dart'; import 'package:flutter/cupertino.d
import 'package:flutter/material.dart';
import 'package:hitch_fun1/Components/constants.dart';
import 'package:hitch_fun1/Components/Reusable_card.dart';
import 'package:flutter/cupertino.dart';
class sample extends StatefulWidget {
@override
_sampleState createState() => _sampleState();
}
class _sampleState extends State<sample> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('BottomModalSheet'),
),
body: InkWell(
child: TextField(
decoration: InputDecoration(
enabled: false,
suffixIcon: Padding(
padding: EdgeInsets.only(top: 15),
child: Icon(Icons.add),
),
prefixIcon: Padding(
padding: EdgeInsets.only(top: 15),
child: Icon(Icons.favorite_border_rounded),
),
),
),
onTap: () {
_showBottomSheet(context);
}),
);
}
List<bool> isSelected;
@override
void initState() {
isSelected = [false, false, false];
super.initState();
focusToggle = [focusNodeButton1, focusNodeButton2, focusNodeButton3];
}
FocusNode focusNodeButton1 = FocusNode();
FocusNode focusNodeButton2 = FocusNode();
FocusNode focusNodeButton3 = FocusNode();
List<FocusNode> focusToggle;
@override
void dispose() {
// Clean up the focus node when the Form is disposed.
focusNodeButton1.dispose();
focusNodeButton2.dispose();
focusNodeButton3.dispose();
super.dispose();
}
_showBottomSheet(context) {
showModalBottomSheet(
context: context,
builder: (BuildContext c) {
return StatefulBuilder(
builder: (BuildContext context,
void Function(void Function()) setState) {
return Container(
height: 250,
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
child: ToggleButtons(
// borderColor: Colors.black,
fillColor: Colors.white,
borderWidth: 4,
selectedBorderColor: Colors.pink,
selectedColor: Colors.pinkAccent,
splashColor: Colors.deepOrange[400],
focusNodes: focusToggle,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(30),
bottomRight: Radius.circular(30)),
children: <Widget>[
Padding(
padding: const EdgeInsets.all(15.0),
child: Text(
'you',
style: TextStyle(fontSize: 16),
),
),
Padding(
padding: const EdgeInsets.all(15.0),
child: Text(
'me',
style: TextStyle(fontSize: 16),
),
),
Padding(
padding: const EdgeInsets.all(15.0),
child: Text(
'them',
style: TextStyle(fontSize: 16),
),
),
],
onPressed: (int index) {
setState(() {
for (int i = 0; i < isSelected.length; i++) {
isSelected[i] = i == index;
}
print(isSelected[index].toString());
});
},
isSelected: isSelected,
),
),
]));
},
);
});
}
}
导入“包装:颤振/材料.省道”;
导入“package:hitch_fun1/Components/constants.dart”;
导入“包装:hitch_fun1/Components/Reusabled_card.dart”;
进口“包装:颤振/cupertino.dart”;
类示例扩展StatefulWidget{
@凌驾
_sampleState createState()=>_sampleState();
}
类_sampleState扩展状态{
@凌驾
小部件构建(构建上下文){
返回脚手架(
appBar:appBar(
标题:文本('BottomModalSheet'),
),
主体:墨水池(
孩子:TextField(
装饰:输入装饰(
启用:false,
副词:填充(
填充:仅限边缘设置(顶部:15),
子:图标(Icons.add),
),
前缀:填充(
填充:仅限边缘设置(顶部:15),
子:图标(图标。最喜爱的\u边框\u圆角),
),
),
),
onTap:(){
_展示底稿(上下文);
}),
);
}
当选名单;
@凌驾
void initState(){
isSelected=[假,假,假];
super.initState();
focusToggle=[focusNodeButton1,focusNodeButton2,focusNodeButton3];
}
FocusNode focusNodeButton1=FocusNode();
FocusNode focusNodeButton2=FocusNode();
FocusNode focusNodeButton3=FocusNode();
列表焦点;
@凌驾
无效处置(){
//在释放表单时清理焦点节点。
focusNodeButton1.dispose();
focusNodeButton2.dispose();
focusNodeButton3.dispose();
super.dispose();
}
_显示底页(上下文){
showModalBottomSheet(
上下文:上下文,
生成器:(BuildContext c){
返回状态生成器(
生成器:(BuildContext上下文,
void函数(void函数())设置状态){
返回容器(
身高:250,
孩子:排(
crossAxisAlignment:crossAxisAlignment.center,
mainAxisAlignment:mainAxisAlignment.center,
儿童:[
容器(
子:切换按钮(
//边框颜色:颜色。黑色,
fillColor:Colors.white,
边框宽度:4,
selectedBorderColor:Colors.pink,
selectedColor:Colors.pinkAccent,
splashColor:Colors.deepOrange[400],
focusNodes:focusToggle,
borderRadius:仅限borderRadius(
左上:半径。圆形(30),
右下角:半径。圆形(30)),
儿童:[
填充物(
填充:常数边集全部(15.0),
子:文本(
“你”,
样式:TextStyle(字体大小:16),
),
),
填充物(
填充:常数边集全部(15.0),
子:文本(
“我”,
样式:TextStyle(字体大小:16),
),
),
填充物(
填充:常数边集全部(15.0),
子:文本(
“他们”,
样式:TextStyle(字体大小:16),
),
),
],
onPressed:(int索引){
设置状态(){
for(int i=0;i
现在我想显示在切换按钮中选择的值,并将其显示在上面禁用的文本字段中。
有人能告诉我怎么做吗?在
TextField
中添加一个textdeditingcontroller
,然后在切换按钮上的on按下
,将切换按钮值分配给控制器,如textFieldController.text=isSelected[index].toString()
更新:
您可以设置列表中的3个值,
var值=['me'、'you'、'them']代码>
然后在显示的中
这样做
textEditingController.text=值[索引]代码>
我想这会奏效的我试过了,但仍然显示索引值检查更新的答案没有发生。。。它显示错误