Flutter 颤振标记:标记不可识别
我正在尝试使用颤振标签和计划来获取并保存到数据库 我正在使用颤振标签插件。下面是我试图复制的示例 这是照片 我正在使用这个版本Flutter 颤振标记:标记不可识别,flutter,Flutter,我正在尝试使用颤振标签和计划来获取并保存到数据库 我正在使用颤振标签插件。下面是我试图复制的示例 这是照片 我正在使用这个版本 flutter_tagging: ^2.2.0+3 您可以复制粘贴运行下面的完整代码 您的代码使用flatter\u标记version1.0.0,您可以在pubspec.yaml中设置 设置版本后,语法错误将消失 dependencies: flutter: sdk: flutter flutter_tagging: 1.0.0 对于最新版本的2
flutter_tagging: ^2.2.0+3
您可以复制粘贴运行下面的完整代码
您的代码使用
flatter\u标记
version1.0.0
,您可以在pubspec.yaml中设置设置版本后,语法错误将消失
dependencies:
flutter:
sdk: flutter
flutter_tagging: 1.0.0
对于最新版本的2.2.0+3
,您可以直接使用1.0.0版的工作演示 完整代码
import 'package:flutter/material.dart';
import 'package:flutter_tagging/flutter_tagging.dart';
class Tagging extends StatefulWidget {
@override
_TaggingState createState() => _TaggingState();
}
class _TaggingState extends State<Tagging> {
final _scaffoldKey = GlobalKey<ScaffoldState>();
String _selectedValuesJson = 'Nothing to show';
List searchlists = [];
var dtguid;
var dtgname;
int count = 0;
var offset = 0;
String nodata;
@override
void initState() {
super.initState();
}
@override
void dispose() {
super.dispose();
}
String text = "Nothing to show";
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
// title: Text(widget.title),
),
body: SingleChildScrollView(
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: FlutterTagging(
textFieldDecoration: InputDecoration(
border: OutlineInputBorder(),
hintText: "Tags",
labelText: "Enter tags"),
addButtonWidget: _buildAddButton(),
chipsColor: Colors.pinkAccent,
chipsFontColor: Colors.white,
deleteIcon: Icon(Icons.cancel, color: Colors.white),
chipsPadding: EdgeInsets.all(2.0),
chipsFontSize: 14.0,
chipsSpacing: 5.0,
chipsFontFamily: 'helvetica_neue_light',
suggestionsCallback: (pattern) async {
return await TagSearchService.getSuggestions(pattern);
},
onChanged: (result) {
setState(() {
text = result.toString();
});
},
),
),
SizedBox(
height: 20.0,
),
Center(
child: Text(
text,
style: TextStyle(color: Colors.pink),
),
)
],
),
),
);
}
Widget _buildAddButton() {
return Container(
padding: EdgeInsets.all(8.0),
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(20.0)),
color: Colors.pinkAccent,
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.add,
color: Colors.white,
size: 15.0,
),
Text(
"Add New Tag",
style: TextStyle(color: Colors.white, fontSize: 14.0),
),
],
),
);
}
}
class TagSearchService {
static Future<List> getSuggestions(String query) async {
await Future.delayed(Duration(milliseconds: 400), null);
List<dynamic> tagList = <dynamic>[];
tagList.add({'name': "Flutter", 'value': 1});
tagList.add({'name': "HummingBird", 'value': 2});
tagList.add({'name': "Dart", 'value': 3});
List<dynamic> filteredTagList = <dynamic>[];
if (query.isNotEmpty) {
filteredTagList.add({'name': query, 'value': 0});
}
for (var tag in tagList) {
if (tag['name'].toLowerCase().contains(query)) {
filteredTagList.add(tag);
}
}
return filteredTagList;
}
}
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: Tagging(),
);
}
}
导入“包装:颤振/材料.省道”;
导入“包装:颤振标签/颤振标签.dart”;
类标记扩展了StatefulWidget{
@凌驾
_TaggingState createState()=>U TaggingState();
}
类_标记状态扩展状态{
最终_scaffoldKey=GlobalKey();
字符串_selectedValuesJson='无需显示';
列表搜索列表=[];
var-dtguid;
var-dtgname;
整数计数=0;
var偏移=0;
字符串nodata;
@凌驾
void initState(){
super.initState();
}
@凌驾
无效处置(){
super.dispose();
}
String text=“无需显示”;
@凌驾
小部件构建(构建上下文){
返回脚手架(
钥匙:_scaffoldKey,
appBar:appBar(
//标题:文本(widget.title),
),
正文:SingleChildScrollView(
子:列(
儿童:[
填充物(
填充:常数边集全部(8.0),
孩子:是的(
text字段装饰:输入装饰(
边框:OutlineInputBorder(),
hintText:“标签”,
labelText:“输入标签”),
addButtonWidget:\u buildAddButton(),
chipsColor:Colors.pinkAccent,
chipsFontColor:颜色。白色,
删除图标:图标(Icons.cancel,颜色:Colors.white),
切屑铲:边缘集。全部(2.0),
芯片字体大小:14.0,
芯片空间:5.0,
家庭芯片:“helvetica_neue_light”,
suggestionsCallback:(模式)异步{
return wait TagSearchService.getSuggestions(模式);
},
一旦更改:(结果){
设置状态(){
text=result.toString();
});
},
),
),
大小盒子(
身高:20.0,
),
居中(
子:文本(
文本,
样式:TextStyle(颜色:Colors.pink),
),
)
],
),
),
);
}
小部件_buildAddButton(){
返回容器(
填充:边缘设置。全部(8.0),
装饰:盒子装饰(
borderRadius:borderRadius.all(半径圆形(20.0)),
颜色:Colors.pinkAccent,
),
孩子:排(
mainAxisSize:mainAxisSize.min,
儿童:[
图标(
Icons.add,
颜色:颜色,白色,
尺寸:15.0,
),
正文(
“添加新标签”,
样式:TextStyle(颜色:Colors.white,fontSize:14.0),
),
],
),
);
}
}
类标记搜索服务{
静态未来getSuggestions(字符串查询)异步{
等待未来。延迟(持续时间(毫秒:400),空);
列表标记列表=[];
添加({'name':'flatter','value':1});
添加({'name':'HummingBird','value':2});
添加({'name':'Dart','value':3});
列表filteredTagList=[];
if(query.isNotEmpty){
添加({'name':查询,'value':0});
}
for(标记列表中的var标记){
if(标记['name'].toLowerCase().contains(查询)){
filteredTagList.add(标签);
}
}
返回filteredTagList;
}
}
void main(){
runApp(MyApp());
}
类MyApp扩展了无状态小部件{
@凌驾
小部件构建(构建上下文){
返回材料PP(
标题:“颤振演示”,
主题:主题数据(
主样本:颜色。蓝色,
视觉密度:视觉密度。自适应平台密度,
),
主页:标记(),
);
}
}
您可以复制粘贴运行下面的完整代码您的代码使用
flatter\u标记
version1.0.0
,您可以在pubspec.yaml中设置设置版本后,语法错误将消失
dependencies:
flutter:
sdk: flutter
flutter_tagging: 1.0.0
对于最新版本的2.2.0+3
,您可以直接使用1.0.0版的工作演示 完整代码
import 'package:flutter/material.dart';
import 'package:flutter_tagging/flutter_tagging.dart';
class Tagging extends StatefulWidget {
@override
_TaggingState createState() => _TaggingState();
}
class _TaggingState extends State<Tagging> {
final _scaffoldKey = GlobalKey<ScaffoldState>();
String _selectedValuesJson = 'Nothing to show';
List searchlists = [];
var dtguid;
var dtgname;
int count = 0;
var offset = 0;
String nodata;
@override
void initState() {
super.initState();
}
@override
void dispose() {
super.dispose();
}
String text = "Nothing to show";
@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
// title: Text(widget.title),
),
body: SingleChildScrollView(
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: FlutterTagging(
textFieldDecoration: InputDecoration(
border: OutlineInputBorder(),
hintText: "Tags",
labelText: "Enter tags"),
addButtonWidget: _buildAddButton(),
chipsColor: Colors.pinkAccent,
chipsFontColor: Colors.white,
deleteIcon: Icon(Icons.cancel, color: Colors.white),
chipsPadding: EdgeInsets.all(2.0),
chipsFontSize: 14.0,
chipsSpacing: 5.0,
chipsFontFamily: 'helvetica_neue_light',
suggestionsCallback: (pattern) async {
return await TagSearchService.getSuggestions(pattern);
},
onChanged: (result) {
setState(() {
text = result.toString();
});
},
),
),
SizedBox(
height: 20.0,
),
Center(
child: Text(
text,
style: TextStyle(color: Colors.pink),
),
)
],
),
),
);
}
Widget _buildAddButton() {
return Container(
padding: EdgeInsets.all(8.0),
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(20.0)),
color: Colors.pinkAccent,
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Icon(
Icons.add,
color: Colors.white,
size: 15.0,
),
Text(
"Add New Tag",
style: TextStyle(color: Colors.white, fontSize: 14.0),
),
],
),
);
}
}
class TagSearchService {
static Future<List> getSuggestions(String query) async {
await Future.delayed(Duration(milliseconds: 400), null);
List<dynamic> tagList = <dynamic>[];
tagList.add({'name': "Flutter", 'value': 1});
tagList.add({'name': "HummingBird", 'value': 2});
tagList.add({'name': "Dart", 'value': 3});
List<dynamic> filteredTagList = <dynamic>[];
if (query.isNotEmpty) {
filteredTagList.add({'name': query, 'value': 0});
}
for (var tag in tagList) {
if (tag['name'].toLowerCase().contains(query)) {
filteredTagList.add(tag);
}
}
return filteredTagList;
}
}
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: Tagging(),
);
}
}
导入“包装:颤振/材料.省道”;
导入“包装:颤振标签/颤振标签.dart”;
类标记扩展了StatefulWidget{
@凌驾
_TaggingState createState()=>U TaggingState();
}
类_标记状态扩展状态{
最终_scaffoldKey=GlobalKey();
字符串_selectedValuesJson='无需显示';
列表搜索列表=[];
var-dtguid;
var-dtgname;
整数计数=0;
var偏移=0;
字符串nodata;
@凌驾
void initState(){
super.initState();
}
@凌驾
无效处置(){
super.dispose();
}
String text=“无需显示”;
@凌驾
小部件构建(构建上下文){
返回脚手架(
钥匙:_scaffoldKey,
appBar:appBar(
//标题:文本(widget.title),
),
正文:SingleChildScrollView(
子:列(
儿童:[
填充物(
填充:常数边集全部(8.0),
孩子:是的(
text字段装饰:输入装饰(
边框:OutlineInputBorder(),
hintText:“标签”,
labelText:“输入标签”),
addButtonWidget:\u buildAddButton(),
chipsColor:Colors.pinkAccent,
chipsFontColor:颜色。白色,
删除图标:图标(Icons.cancel,颜色:Colors.white),
切屑铲:边缘集