如何 select 在 checkboxlisttile 中 flutter 中的多个复选框
How to select multiple checkboxes in flutter in checkboxlisttile
任何人都可以告诉我如何在 checkboxlisttile 中 select 多个选项。
在这里我只能点击一个选项。当我检查特定项目时，我想将数据库中注释 table 中的状态列设置为已完成。
（实际上我想 select 项目完成并将其显示在另一个名为已完成的选项卡下。checkboxlisttile 是动态创建的，即从数据库中创建。添加新注释时，它会显示在此列表视图中。）
note_info.dart //这是显示注释的屏幕，即列表视图
import 'dart:io';
import 'package:vers2cts/models/note_model.dart';
import 'package:vers2cts/models/customer_model.dart';
import 'package:vers2cts/services/db_service.dart';
import 'package:vers2cts/utils/db_helper.dart';
import 'package:flutter/material.dart';
import 'package:sqflite/sqflite.dart';
import 'new_note.dart';
class Note_Info extends StatefulWidget{
final String appBarTitle;
final CustomerModel customer;
//Note_Info();
Note_Info(this. customer, this.appBarTitle);
@override
State<StatefulWidget> createState() {
//return Note_InfoState();
return Note_InfoState(this. customer,this.appBarTitle);
}
}
class Note_InfoState extends State<Note_Info> {
DBService dbService = DBService();
List<NoteModel> noteList;
int count = 0;
static final GlobalKey<ScaffoldState> scaffoldKey = new GlobalKey<ScaffoldState>();
NoteModel note=NoteModel();
String appBarTitle;
CustomerModel customer=new CustomerModel();
Note_InfoState(this.customer, this.appBarTitle);
bool rememberMe = false;
DateTime _date = DateTime.now();
TextEditingController custfNameController = TextEditingController();
@override
void initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
updateListView();
if (noteList == null) {
noteList = List<NoteModel>();
updateListView();
}
TextStyle titleStyle = Theme.of(context).textTheme.subhead;
var height = MediaQuery.of(context).size.height;
var name=customer.first_name+" "+customer.last_name;
custfNameController.text = name;
return DefaultTabController(
length: 4,
child: Scaffold(
appBar: AppBar(
actions: [
IconButton(
icon: Icon(
Icons.add,
),
onPressed: () {
Navigator.of(context).push(MaterialPageRoute(
builder: (BuildContext context) => NewNote(customer,note)));
},
)
],
),
body: Container(
child: Column(
children: <Widget>[
TextField(controller: custfNameController,
style: TextStyle(
fontSize: 20.0, fontWeight: FontWeight.bold),
textAlign: TextAlign.center),
Padding(
padding: const EdgeInsets.all(15.0),
child: Row(children: [
ImageProfile(customer.cust_photo),
Padding(
padding: const EdgeInsets.only(left: 30.0),
child: IconButton(
icon: Icon(
Icons.call,
color: Colors.green,
size: 45,
),
onPressed: () {
},
),
),
],),
),
SizedBox(
height: 50,
child: AppBar(
bottom: TabBar(
tabs: [
Tab(
text: "All",
),
Tab(
text: "Pending",
),
Tab(
text: "Cancelled",
),
Tab(
text: "Completed",
),
],
),
),
),
// create widgets for each tab bar here
Expanded(
child: TabBarView(
children: [
// first tab bar view widget
Container(
child: getNotecheckList()
),
// second tab bar view widget
Container(
),
Container(
child: Center(
child: Text(
'Cancelled',
),
),
),
Container(
child: Center(
child: Text(
'Completed',
),
),
),
],
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
height: 55.0,
width: 200,
child: RaisedButton(
elevation: 2,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20)),
color: Theme
.of(context)
.primaryColorDark,
textColor: Colors.white,
child: Text('Save', textScaleFactor: 1.5,),
onPressed: () {
setState(() {
//_reset();
});
},
),
),
),
]
),
)
));
}
Widget ImageProfile(String fileName) {
return Center(
child: CircleAvatar(
radius: 80.0,
backgroundImage: fileName == null
?AssetImage('images/person_icon.jpg')
:FileImage(File(customer.cust_photo))),
);
}
Future<void> updateListView() {
final Future<Database> dbFuture = DB.init();
dbFuture.then((database) {
int cid=customer.cust_id;
Future<List<NoteModel>> noteListFuture = dbService.getCustomerNotes(cid);
noteListFuture.then((noteList) {
setState(() {
this.noteList = noteList;
this.count = noteList.length;
});
});
});
}
int _isChecked=-1;
ListView getNotecheckList() {
return ListView.builder(
itemCount: count,
itemBuilder: (BuildContext context, int position) {
return Card(
color: Colors.white,
elevation: 2.0,
child: CheckboxListTile(
title: Text(this.noteList[position].note),
subtitle: Text(this.noteList[position].actn_on),
//secondary: const Icon(Icons.web),
value: position== _isChecked,
onChanged: (bool value) {
setState(() {
_isChecked = value?position:-1;
});
},
controlAffinity: ListTileControlAffinity.leading,
),
);
},
);
}
}
new_note.dart //这是添加新注释的地方。
import 'package:flutter/material.dart';
import 'package:flutter/painting.dart';
import 'package:table_calendar/table_calendar.dart';
import 'package:flutter_speed_dial/flutter_speed_dial.dart';
import 'package:smooth_star_rating/smooth_star_rating.dart';
import 'package:intl/intl.dart';
import 'package:vers2cts/models/customer_model.dart';
import 'package:vers2cts/models/note_model.dart';
import 'package:vers2cts/services/db_service.dart';
import 'package:vers2cts/utils/form_helper.dart';
class NewNote extends StatefulWidget{
final NoteModel note;
final CustomerModel customer;
NewNote(this.customer,this. note);
//Dropdown
/*
final String label;
final Function(Color) onChanged;
final double height;
final double width;
NewNote.fordropdwn({
Key key,
this.onChanged,
this.height = 25,
this.width = 150,
this.label,
}) : super(key: key);*/
@override
State<StatefulWidget> createState() {
//return New_NoteState(this.customer);
return New_NoteState(this.customer,this.note);
}
}
class New_NoteState extends State<NewNote> with SingleTickerProviderStateMixin{
New_NoteState(this.customer,this.note);
NoteModel note=new NoteModel();
CustomerModel customer=new CustomerModel();
TextEditingController NoteController=TextEditingController();
TextEditingController custfNameController = TextEditingController();
DateTime _reminderDate = DateTime.now();
DBService dbService=new DBService();
SpeedDial _speedDial(){
return SpeedDial(
// child: Icon(Icons.add),
animatedIcon: AnimatedIcons.add_event,
animatedIconTheme: IconThemeData(size: 24.0),
backgroundColor: Colors.yellow,
curve: Curves.easeInCirc,
children: [
SpeedDialChild(
child: Icon(Icons.location_on,color: Colors.yellow,),
//backgroundColor: Theme.of(context).primaryColor,
label: 'Add Location',
//labelBackgroundColor:Theme.of(context).primaryColor,
),
SpeedDialChild(
child: Icon(Icons.keyboard_voice),
//backgroundColor: Colors.yellow,
label: 'Add voice',
//labelBackgroundColor: Colors.yellow
),
SpeedDialChild(
child: Icon(Icons.attachment_outlined,color :Colors.redAccent),
//backgroundColor:Theme.of(context).primaryColorLight,
label: 'Add File',
// labelBackgroundColor: Theme.of(context).primaryColorLight
),
SpeedDialChild(
child: Icon(Icons.image,color: Colors.lightBlue,),
//backgroundColor: Colors.yellow,
label: 'Add Image',
// labelBackgroundColor: Colors.yellow,
),
],
);
}
//for DropDownMenu
Color value=Colors.red;
final List<Color> colors = [
Colors.red,
Colors.blue,
Colors.green,
Colors.yellow,
Colors.pink,
Colors.purple,
Colors.brown,
];
//for Switch
bool isSwitched = false;
var textValue = 'Switch is OFF';
void toggleSwitch(bool value) {
if(isSwitched == false)
{
setState(() {
isSwitched = true;
note.rmnd_ind=1;
//this.note.remindOn = _reminderDate.toString();
});
}
else
{
setState(() {
isSwitched = false;
note.rmnd_ind=0;
});
}
}
@override
Widget build(BuildContext context) {
var height = MediaQuery.of(context).size.height;
var width = MediaQuery.of(context).size.width;
var name=customer.first_name+customer.last_name;
custfNameController.text = name;
return WillPopScope(
onWillPop: () {
// Write some code to control things, when user press Back navigation button in device navigationBar
moveToLastScreen();
},
child: Scaffold(
appBar:AppBar(),
body:ListView(
children: <Widget>[
SizedBox(
height: 2.0,
),
TextField(controller: custfNameController,
style: TextStyle(
fontSize: 20.0, fontWeight: FontWeight.bold),
textAlign: TextAlign.center),
Align(
alignment: Alignment.centerLeft,
child: Text("Add New",textAlign: TextAlign.left,
style: TextStyle(fontSize: 22,fontWeight: FontWeight.bold),),
),
SizedBox(
height: 2.0,
),
Divider(),
SizedBox(
height: 2.0,
),
Padding(
padding: const EdgeInsets.all(8.0),
child: TextField(
controller: NoteController,
decoration: InputDecoration(
border: OutlineInputBorder(
borderSide: const BorderSide(width: 2.0),)),
keyboardType: TextInputType.multiline,
minLines: 5,//Normal textInputField will be displayed
maxLines: 5, // when user presses enter it will adapt to it
onChanged: (value) {
this.note.note = value;
},
),
),
TableCalendar(
selectedDayPredicate: (day) {
return isSameDay(_reminderDate, day);
},
onDaySelected: (selectedDay, focusedDay) {
setState(() {
String _reminderDate = DateFormat('dd-MM-yyyy').format(selectedDay);
note.actn_on=_reminderDate.toString();
});
},// Set initial date
focusedDay: DateTime.now(),
firstDay: DateTime.utc(2010, 10, 16),
lastDay: DateTime.utc(2030, 3, 14),),
SizedBox(
height: height*0.03,
),
Padding(
padding: const EdgeInsets.all(10.0),
child: Row(//mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Text("Remind me",style: TextStyle(fontSize: 20),),
Padding(
padding: const EdgeInsets.only(left:80.0),
child: Container(
child: Switch(
onChanged: toggleSwitch,
value: isSwitched,
//activeColor: Colors.blue,
//activeTrackColor: Colors.yellow,
//inactiveThumbColor: Colors.redAccent,
//inactiveTrackColor: Colors.orange,
),
),
),
],),
),
Padding(
padding: const EdgeInsets.all(10.0),
child: Row(mainAxisAlignment: MainAxisAlignment.start,
children:<Widget>[
Text("Priority",style: TextStyle(fontSize: 20.0),),
Padding(
padding: const EdgeInsets.only(left:20.0),
child: Container(
child: SmoothStarRating(
size: height=50.0,
allowHalfRating: false,
onRated: (value) {
this.note.prty=value;
print("rating value -> $value");
},
),
),
)]),
),
Padding(
padding: const EdgeInsets.all(10.0),
child: Row(mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Text("Color",style: TextStyle(fontSize: 20),),
Padding(
padding: const EdgeInsets.only(left:80.0),
child: Container(
child: DropdownButton<Color>(
value: value,
//hint: Text(widget.label ?? ''),
onChanged: (color) {
setState(() => value = color);
//widget.onChanged(color);
},
items: colors.map((e) => DropdownMenuItem(
value: e,
child: Container(
// width: 60.0,
//height: 10.0,
width: 60.0,
// height: widget.height,
color: e,
),
),
)
.toList(),
),
),
),
],),
),
SizedBox(
height: height*0.08,
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
height: 55.0,
width: 200,
child: RaisedButton(
elevation: 2,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20)),
color: Theme.of(context).primaryColorDark,
textColor: Colors.white,
child: Text('Save',textScaleFactor: 1.5,),
onPressed: (){
setState(() {
_save();
});
},
),
),
),
],
),
floatingActionButton:_speedDial(),
));
}
void moveToLastScreen() {
Navigator.pop(context, true);
}
void _save() async {
moveToLastScreen();
note.cust_id=customer.cust_id;
print(customer.cust_id);
print(note.cust_id);
int result;
if (note.note_id != null) { // Case 1: Update operation
result = await dbService.updateNote(note);
} else { // Case 2: Insert Operation
result = await dbService.insertNote(note);
}
if (result != 0) { // Success
FormHelper.showAlertDialog(context,'Status', 'Note Saved Successfully');
} else { // Failure
FormHelper.showAlertDialog(context,'Status', 'Problem Saving Note');
}
}
}
db_service.dart
import 'package:vers2cts/models/customer_model.dart';
import 'package:vers2cts/models/languages_model.dart';
import 'package:vers2cts/models/note_model.dart';
import 'package:vers2cts/models/user_model.dart';
import 'package:vers2cts/utils/db_helper.dart';
class DBService {
Future<int> insertNote(NoteModel note) async {
await DB.init();
var result = await DB.insert(NoteModel.table, note);
return result;
}
Future<List<NoteModel>> getCustomerNotes(int customer) async {
await DB.init();
var res = await DB.rawQuery("note WHERE cust_id = '$customer'");
int count = res.length;
List<NoteModel> notelist = List<NoteModel>();
// For loop to create a 'Note List' from a 'Map List'
for (int i = 0; i < count; i++) {
notelist.add(NoteModel.fromMap(res[i]));
}
return notelist;
}
}
note_model.dart
import 'model.dart';
class NoteModel extends Model {
static String table = 'note';
bool isSelected=false;
int note_id;
int cust_id;
String note;
String actn_on;
int rmnd_ind;
double prty;
String colr;
String sts;
int id;
String cre_date;
String cre_by;
String mod_date;
String mod_by;
int txn_id;
int delete_ind;
NoteModel({
this.note_id,
this.cust_id,
this.note,
this.actn_on,
this.rmnd_ind,
this.prty,
this.colr,
this.sts,
this.id,
this.cre_date,
this.cre_by,
this.mod_date,
this.mod_by,
this.txn_id,
this.delete_ind
});
static NoteModel fromMap(Map<String, dynamic> map) {
return NoteModel(
note_id: map["note_id"],
cust_id: map['cust_id'],
note: map['note'].toString(),
actn_on: map['actn_on'].toString(),
rmnd_ind: map['rmnd_ind'],
prty: map['prty'],
colr: map['colr'].toString(),
sts: map['sts'].toString(),
id: map['id'],
cre_date: map['cre_date'].toString(),
cre_by: map['cre_by'].toString(),
mod_date: map['mod_date'].toString(),
mod_by: map['mod_by'].toString(),
txn_id: map['txn_id'],
delete_ind: map['delete_ind'],
);
}
Map<String, dynamic> toMap() {
Map<String, dynamic> map = {
'note_id': note_id,
'cust_id': cust_id,
'note':note,
'actn_on': actn_on,
'rmnd_ind': rmnd_ind,
'prty': prty,
'colr': colr,
'sts':sts,
'id': id,
'cre_date': cre_date,
'cre_by': cre_by,
'mod_date':mod_date,
'mod_by':mod_by,
'txn_id':txn_id,
'delete_ind': delete_ind
};
if (note_id != null) {
map['note_id'] = note_id;
}
return map;
}
}
db_helper.dart
import 'dart:async';
import 'package:vers2cts/models/model.dart';
import 'package:path/path.dart' as p;
import 'package:sqflite/sqflite.dart';
abstract class DB {
static Database _db;
static int get _version => 1;
static Future<Database> init() async {
if (_db != null) {
return _db;
}
try {
var databasesPath = await getDatabasesPath();
String _path = p.join(databasesPath, 'CTS.db');
_db = await openDatabase(_path, version: _version, onCreate: onCreate);
print('db location:'+_path);
} catch (ex) {
print(ex);
}
}
static void onCreate(Database db, int version) async {
await db.execute(
'CREATE TABLE note (note_id INTEGER PRIMARY KEY,cust_id INTEGER, '
'note TEXT, '
'actn_on TEXT, rmnd_ind INTEGER, prty REAL, colr TEXT,'
'sts TEXT,'
'id INTEGER, cre_date TEXT,cre_by TEXT, mod_date TEXT,mod_by TEXT, txn_id INTEGER, delete_ind INTEGER)');
}
static Future<List<Map<String, dynamic>>> query(String table) async =>
_db.query(table);
static Future<int> insert(String table, Model model) async =>
await _db.insert(table, model.toMap());
static Future<Batch> batch() async => _db.batch();
static Future<List<Map<String, dynamic>>> rawQuery(String table) async =>
_db.query(table);
}
您需要存储从用户那里选择的所有值，然后使用它。
例如-
var selectedIndexes = [];
ListView getNotecheckList() {
return ListView.builder(
itemCount: count,
itemBuilder: (_, int index) {
return Card(
color: Colors.white,
elevation: 2.0,
child: CheckboxListTile(
title: Text(this.noteList[position].note),
subtitle: Text(this.noteList[position].actn_on),
value: selectedIndexes.contains(index),
onChanged: (_) {
if (selectedIndexes.contains(index)) {
selectedIndexes.remove(index); // unselect
} else {
selectedIndexes.add(index); // select
}
},
controlAffinity: ListTileControlAffinity.leading,
),
);
},
);
}
仅存储索引或整个数组并进行尝试
输出：-
代码:-
import 'package:flutter/material.dart';
class CheckBoxExample extends StatefulWidget {
const CheckBoxExample({Key? key}) : super(key: key);
@override
State<CheckBoxExample> createState() => _CheckBoxExampleState();
}
class _CheckBoxExampleState extends State<CheckBoxExample> {
List multipleSelected = [];
List checkListItems = [
{
"id": 0,
"value": false,
"title": "Sunday",
},
{
"id": 1,
"value": false,
"title": "Monday",
},
{
"id": 2,
"value": false,
"title": "Tuesday",
},
{
"id": 3,
"value": false,
"title": "Wednesday",
},
{
"id": 4,
"value": false,
"title": "Thursday",
},
{
"id": 5,
"value": false,
"title": "Friday",
},
{
"id": 6,
"value": false,
"title": "Saturday",
},
];
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
body: Padding(
padding: const EdgeInsets.symmetric(horizontal: 24.0, vertical: 64.0),
child: Column(
children: [
Column(
children: List.generate(
checkListItems.length,
(index) => CheckboxListTile(
controlAffinity: ListTileControlAffinity.leading,
contentPadding: EdgeInsets.zero,
dense: true,
title: Text(
checkListItems[index]["title"],
style: const TextStyle(
fontSize: 16.0,
color: Colors.black,
),
),
value: checkListItems[index]["value"],
onChanged: (value) {
setState(() {
checkListItems[index]["value"] = value;
if (multipleSelected.contains(checkListItems[index])) {
multipleSelected.remove(checkListItems[index]);
} else {
multipleSelected.add(checkListItems[index]);
}
});
},
),
),
),
const SizedBox(height: 64.0),
Text(
multipleSelected.isEmpty ? "" : multipleSelected.toString(),
style: const TextStyle(
fontSize: 22.0,
color: Colors.black,
fontWeight: FontWeight.bold,
),
),
],
),
),
);
}
}
任何人都可以告诉我如何在 checkboxlisttile 中 select 多个选项。 在这里我只能点击一个选项。当我检查特定项目时，我想将数据库中注释 table 中的状态列设置为已完成。 （实际上我想 select 项目完成并将其显示在另一个名为已完成的选项卡下。checkboxlisttile 是动态创建的，即从数据库中创建。添加新注释时，它会显示在此列表视图中。）
note_info.dart //这是显示注释的屏幕，即列表视图
import 'dart:io';
import 'package:vers2cts/models/note_model.dart';
import 'package:vers2cts/models/customer_model.dart';
import 'package:vers2cts/services/db_service.dart';
import 'package:vers2cts/utils/db_helper.dart';
import 'package:flutter/material.dart';
import 'package:sqflite/sqflite.dart';
import 'new_note.dart';
class Note_Info extends StatefulWidget{
final String appBarTitle;
final CustomerModel customer;
//Note_Info();
Note_Info(this. customer, this.appBarTitle);
@override
State<StatefulWidget> createState() {
//return Note_InfoState();
return Note_InfoState(this. customer,this.appBarTitle);
}
}
class Note_InfoState extends State<Note_Info> {
DBService dbService = DBService();
List<NoteModel> noteList;
int count = 0;
static final GlobalKey<ScaffoldState> scaffoldKey = new GlobalKey<ScaffoldState>();
NoteModel note=NoteModel();
String appBarTitle;
CustomerModel customer=new CustomerModel();
Note_InfoState(this.customer, this.appBarTitle);
bool rememberMe = false;
DateTime _date = DateTime.now();
TextEditingController custfNameController = TextEditingController();
@override
void initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
updateListView();
if (noteList == null) {
noteList = List<NoteModel>();
updateListView();
}
TextStyle titleStyle = Theme.of(context).textTheme.subhead;
var height = MediaQuery.of(context).size.height;
var name=customer.first_name+" "+customer.last_name;
custfNameController.text = name;
return DefaultTabController(
length: 4,
child: Scaffold(
appBar: AppBar(
actions: [
IconButton(
icon: Icon(
Icons.add,
),
onPressed: () {
Navigator.of(context).push(MaterialPageRoute(
builder: (BuildContext context) => NewNote(customer,note)));
},
)
],
),
body: Container(
child: Column(
children: <Widget>[
TextField(controller: custfNameController,
style: TextStyle(
fontSize: 20.0, fontWeight: FontWeight.bold),
textAlign: TextAlign.center),
Padding(
padding: const EdgeInsets.all(15.0),
child: Row(children: [
ImageProfile(customer.cust_photo),
Padding(
padding: const EdgeInsets.only(left: 30.0),
child: IconButton(
icon: Icon(
Icons.call,
color: Colors.green,
size: 45,
),
onPressed: () {
},
),
),
],),
),
SizedBox(
height: 50,
child: AppBar(
bottom: TabBar(
tabs: [
Tab(
text: "All",
),
Tab(
text: "Pending",
),
Tab(
text: "Cancelled",
),
Tab(
text: "Completed",
),
],
),
),
),
// create widgets for each tab bar here
Expanded(
child: TabBarView(
children: [
// first tab bar view widget
Container(
child: getNotecheckList()
),
// second tab bar view widget
Container(
),
Container(
child: Center(
child: Text(
'Cancelled',
),
),
),
Container(
child: Center(
child: Text(
'Completed',
),
),
),
],
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
height: 55.0,
width: 200,
child: RaisedButton(
elevation: 2,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20)),
color: Theme
.of(context)
.primaryColorDark,
textColor: Colors.white,
child: Text('Save', textScaleFactor: 1.5,),
onPressed: () {
setState(() {
//_reset();
});
},
),
),
),
]
),
)
));
}
Widget ImageProfile(String fileName) {
return Center(
child: CircleAvatar(
radius: 80.0,
backgroundImage: fileName == null
?AssetImage('images/person_icon.jpg')
:FileImage(File(customer.cust_photo))),
);
}
Future<void> updateListView() {
final Future<Database> dbFuture = DB.init();
dbFuture.then((database) {
int cid=customer.cust_id;
Future<List<NoteModel>> noteListFuture = dbService.getCustomerNotes(cid);
noteListFuture.then((noteList) {
setState(() {
this.noteList = noteList;
this.count = noteList.length;
});
});
});
}
int _isChecked=-1;
ListView getNotecheckList() {
return ListView.builder(
itemCount: count,
itemBuilder: (BuildContext context, int position) {
return Card(
color: Colors.white,
elevation: 2.0,
child: CheckboxListTile(
title: Text(this.noteList[position].note),
subtitle: Text(this.noteList[position].actn_on),
//secondary: const Icon(Icons.web),
value: position== _isChecked,
onChanged: (bool value) {
setState(() {
_isChecked = value?position:-1;
});
},
controlAffinity: ListTileControlAffinity.leading,
),
);
},
);
}
}
new_note.dart //这是添加新注释的地方。
import 'package:flutter/material.dart';
import 'package:flutter/painting.dart';
import 'package:table_calendar/table_calendar.dart';
import 'package:flutter_speed_dial/flutter_speed_dial.dart';
import 'package:smooth_star_rating/smooth_star_rating.dart';
import 'package:intl/intl.dart';
import 'package:vers2cts/models/customer_model.dart';
import 'package:vers2cts/models/note_model.dart';
import 'package:vers2cts/services/db_service.dart';
import 'package:vers2cts/utils/form_helper.dart';
class NewNote extends StatefulWidget{
final NoteModel note;
final CustomerModel customer;
NewNote(this.customer,this. note);
//Dropdown
/*
final String label;
final Function(Color) onChanged;
final double height;
final double width;
NewNote.fordropdwn({
Key key,
this.onChanged,
this.height = 25,
this.width = 150,
this.label,
}) : super(key: key);*/
@override
State<StatefulWidget> createState() {
//return New_NoteState(this.customer);
return New_NoteState(this.customer,this.note);
}
}
class New_NoteState extends State<NewNote> with SingleTickerProviderStateMixin{
New_NoteState(this.customer,this.note);
NoteModel note=new NoteModel();
CustomerModel customer=new CustomerModel();
TextEditingController NoteController=TextEditingController();
TextEditingController custfNameController = TextEditingController();
DateTime _reminderDate = DateTime.now();
DBService dbService=new DBService();
SpeedDial _speedDial(){
return SpeedDial(
// child: Icon(Icons.add),
animatedIcon: AnimatedIcons.add_event,
animatedIconTheme: IconThemeData(size: 24.0),
backgroundColor: Colors.yellow,
curve: Curves.easeInCirc,
children: [
SpeedDialChild(
child: Icon(Icons.location_on,color: Colors.yellow,),
//backgroundColor: Theme.of(context).primaryColor,
label: 'Add Location',
//labelBackgroundColor:Theme.of(context).primaryColor,
),
SpeedDialChild(
child: Icon(Icons.keyboard_voice),
//backgroundColor: Colors.yellow,
label: 'Add voice',
//labelBackgroundColor: Colors.yellow
),
SpeedDialChild(
child: Icon(Icons.attachment_outlined,color :Colors.redAccent),
//backgroundColor:Theme.of(context).primaryColorLight,
label: 'Add File',
// labelBackgroundColor: Theme.of(context).primaryColorLight
),
SpeedDialChild(
child: Icon(Icons.image,color: Colors.lightBlue,),
//backgroundColor: Colors.yellow,
label: 'Add Image',
// labelBackgroundColor: Colors.yellow,
),
],
);
}
//for DropDownMenu
Color value=Colors.red;
final List<Color> colors = [
Colors.red,
Colors.blue,
Colors.green,
Colors.yellow,
Colors.pink,
Colors.purple,
Colors.brown,
];
//for Switch
bool isSwitched = false;
var textValue = 'Switch is OFF';
void toggleSwitch(bool value) {
if(isSwitched == false)
{
setState(() {
isSwitched = true;
note.rmnd_ind=1;
//this.note.remindOn = _reminderDate.toString();
});
}
else
{
setState(() {
isSwitched = false;
note.rmnd_ind=0;
});
}
}
@override
Widget build(BuildContext context) {
var height = MediaQuery.of(context).size.height;
var width = MediaQuery.of(context).size.width;
var name=customer.first_name+customer.last_name;
custfNameController.text = name;
return WillPopScope(
onWillPop: () {
// Write some code to control things, when user press Back navigation button in device navigationBar
moveToLastScreen();
},
child: Scaffold(
appBar:AppBar(),
body:ListView(
children: <Widget>[
SizedBox(
height: 2.0,
),
TextField(controller: custfNameController,
style: TextStyle(
fontSize: 20.0, fontWeight: FontWeight.bold),
textAlign: TextAlign.center),
Align(
alignment: Alignment.centerLeft,
child: Text("Add New",textAlign: TextAlign.left,
style: TextStyle(fontSize: 22,fontWeight: FontWeight.bold),),
),
SizedBox(
height: 2.0,
),
Divider(),
SizedBox(
height: 2.0,
),
Padding(
padding: const EdgeInsets.all(8.0),
child: TextField(
controller: NoteController,
decoration: InputDecoration(
border: OutlineInputBorder(
borderSide: const BorderSide(width: 2.0),)),
keyboardType: TextInputType.multiline,
minLines: 5,//Normal textInputField will be displayed
maxLines: 5, // when user presses enter it will adapt to it
onChanged: (value) {
this.note.note = value;
},
),
),
TableCalendar(
selectedDayPredicate: (day) {
return isSameDay(_reminderDate, day);
},
onDaySelected: (selectedDay, focusedDay) {
setState(() {
String _reminderDate = DateFormat('dd-MM-yyyy').format(selectedDay);
note.actn_on=_reminderDate.toString();
});
},// Set initial date
focusedDay: DateTime.now(),
firstDay: DateTime.utc(2010, 10, 16),
lastDay: DateTime.utc(2030, 3, 14),),
SizedBox(
height: height*0.03,
),
Padding(
padding: const EdgeInsets.all(10.0),
child: Row(//mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Text("Remind me",style: TextStyle(fontSize: 20),),
Padding(
padding: const EdgeInsets.only(left:80.0),
child: Container(
child: Switch(
onChanged: toggleSwitch,
value: isSwitched,
//activeColor: Colors.blue,
//activeTrackColor: Colors.yellow,
//inactiveThumbColor: Colors.redAccent,
//inactiveTrackColor: Colors.orange,
),
),
),
],),
),
Padding(
padding: const EdgeInsets.all(10.0),
child: Row(mainAxisAlignment: MainAxisAlignment.start,
children:<Widget>[
Text("Priority",style: TextStyle(fontSize: 20.0),),
Padding(
padding: const EdgeInsets.only(left:20.0),
child: Container(
child: SmoothStarRating(
size: height=50.0,
allowHalfRating: false,
onRated: (value) {
this.note.prty=value;
print("rating value -> $value");
},
),
),
)]),
),
Padding(
padding: const EdgeInsets.all(10.0),
child: Row(mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Text("Color",style: TextStyle(fontSize: 20),),
Padding(
padding: const EdgeInsets.only(left:80.0),
child: Container(
child: DropdownButton<Color>(
value: value,
//hint: Text(widget.label ?? ''),
onChanged: (color) {
setState(() => value = color);
//widget.onChanged(color);
},
items: colors.map((e) => DropdownMenuItem(
value: e,
child: Container(
// width: 60.0,
//height: 10.0,
width: 60.0,
// height: widget.height,
color: e,
),
),
)
.toList(),
),
),
),
],),
),
SizedBox(
height: height*0.08,
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
height: 55.0,
width: 200,
child: RaisedButton(
elevation: 2,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20)),
color: Theme.of(context).primaryColorDark,
textColor: Colors.white,
child: Text('Save',textScaleFactor: 1.5,),
onPressed: (){
setState(() {
_save();
});
},
),
),
),
],
),
floatingActionButton:_speedDial(),
));
}
void moveToLastScreen() {
Navigator.pop(context, true);
}
void _save() async {
moveToLastScreen();
note.cust_id=customer.cust_id;
print(customer.cust_id);
print(note.cust_id);
int result;
if (note.note_id != null) { // Case 1: Update operation
result = await dbService.updateNote(note);
} else { // Case 2: Insert Operation
result = await dbService.insertNote(note);
}
if (result != 0) { // Success
FormHelper.showAlertDialog(context,'Status', 'Note Saved Successfully');
} else { // Failure
FormHelper.showAlertDialog(context,'Status', 'Problem Saving Note');
}
}
}
db_service.dart
import 'package:vers2cts/models/customer_model.dart';
import 'package:vers2cts/models/languages_model.dart';
import 'package:vers2cts/models/note_model.dart';
import 'package:vers2cts/models/user_model.dart';
import 'package:vers2cts/utils/db_helper.dart';
class DBService {
Future<int> insertNote(NoteModel note) async {
await DB.init();
var result = await DB.insert(NoteModel.table, note);
return result;
}
Future<List<NoteModel>> getCustomerNotes(int customer) async {
await DB.init();
var res = await DB.rawQuery("note WHERE cust_id = '$customer'");
int count = res.length;
List<NoteModel> notelist = List<NoteModel>();
// For loop to create a 'Note List' from a 'Map List'
for (int i = 0; i < count; i++) {
notelist.add(NoteModel.fromMap(res[i]));
}
return notelist;
}
}
note_model.dart
import 'model.dart';
class NoteModel extends Model {
static String table = 'note';
bool isSelected=false;
int note_id;
int cust_id;
String note;
String actn_on;
int rmnd_ind;
double prty;
String colr;
String sts;
int id;
String cre_date;
String cre_by;
String mod_date;
String mod_by;
int txn_id;
int delete_ind;
NoteModel({
this.note_id,
this.cust_id,
this.note,
this.actn_on,
this.rmnd_ind,
this.prty,
this.colr,
this.sts,
this.id,
this.cre_date,
this.cre_by,
this.mod_date,
this.mod_by,
this.txn_id,
this.delete_ind
});
static NoteModel fromMap(Map<String, dynamic> map) {
return NoteModel(
note_id: map["note_id"],
cust_id: map['cust_id'],
note: map['note'].toString(),
actn_on: map['actn_on'].toString(),
rmnd_ind: map['rmnd_ind'],
prty: map['prty'],
colr: map['colr'].toString(),
sts: map['sts'].toString(),
id: map['id'],
cre_date: map['cre_date'].toString(),
cre_by: map['cre_by'].toString(),
mod_date: map['mod_date'].toString(),
mod_by: map['mod_by'].toString(),
txn_id: map['txn_id'],
delete_ind: map['delete_ind'],
);
}
Map<String, dynamic> toMap() {
Map<String, dynamic> map = {
'note_id': note_id,
'cust_id': cust_id,
'note':note,
'actn_on': actn_on,
'rmnd_ind': rmnd_ind,
'prty': prty,
'colr': colr,
'sts':sts,
'id': id,
'cre_date': cre_date,
'cre_by': cre_by,
'mod_date':mod_date,
'mod_by':mod_by,
'txn_id':txn_id,
'delete_ind': delete_ind
};
if (note_id != null) {
map['note_id'] = note_id;
}
return map;
}
}
db_helper.dart
import 'dart:async';
import 'package:vers2cts/models/model.dart';
import 'package:path/path.dart' as p;
import 'package:sqflite/sqflite.dart';
abstract class DB {
static Database _db;
static int get _version => 1;
static Future<Database> init() async {
if (_db != null) {
return _db;
}
try {
var databasesPath = await getDatabasesPath();
String _path = p.join(databasesPath, 'CTS.db');
_db = await openDatabase(_path, version: _version, onCreate: onCreate);
print('db location:'+_path);
} catch (ex) {
print(ex);
}
}
static void onCreate(Database db, int version) async {
await db.execute(
'CREATE TABLE note (note_id INTEGER PRIMARY KEY,cust_id INTEGER, '
'note TEXT, '
'actn_on TEXT, rmnd_ind INTEGER, prty REAL, colr TEXT,'
'sts TEXT,'
'id INTEGER, cre_date TEXT,cre_by TEXT, mod_date TEXT,mod_by TEXT, txn_id INTEGER, delete_ind INTEGER)');
}
static Future<List<Map<String, dynamic>>> query(String table) async =>
_db.query(table);
static Future<int> insert(String table, Model model) async =>
await _db.insert(table, model.toMap());
static Future<Batch> batch() async => _db.batch();
static Future<List<Map<String, dynamic>>> rawQuery(String table) async =>
_db.query(table);
}
您需要存储从用户那里选择的所有值，然后使用它。 例如-
var selectedIndexes = [];
ListView getNotecheckList() {
return ListView.builder(
itemCount: count,
itemBuilder: (_, int index) {
return Card(
color: Colors.white,
elevation: 2.0,
child: CheckboxListTile(
title: Text(this.noteList[position].note),
subtitle: Text(this.noteList[position].actn_on),
value: selectedIndexes.contains(index),
onChanged: (_) {
if (selectedIndexes.contains(index)) {
selectedIndexes.remove(index); // unselect
} else {
selectedIndexes.add(index); // select
}
},
controlAffinity: ListTileControlAffinity.leading,
),
);
},
);
}
仅存储索引或整个数组并进行尝试
输出：-
代码:-
import 'package:flutter/material.dart';
class CheckBoxExample extends StatefulWidget {
const CheckBoxExample({Key? key}) : super(key: key);
@override
State<CheckBoxExample> createState() => _CheckBoxExampleState();
}
class _CheckBoxExampleState extends State<CheckBoxExample> {
List multipleSelected = [];
List checkListItems = [
{
"id": 0,
"value": false,
"title": "Sunday",
},
{
"id": 1,
"value": false,
"title": "Monday",
},
{
"id": 2,
"value": false,
"title": "Tuesday",
},
{
"id": 3,
"value": false,
"title": "Wednesday",
},
{
"id": 4,
"value": false,
"title": "Thursday",
},
{
"id": 5,
"value": false,
"title": "Friday",
},
{
"id": 6,
"value": false,
"title": "Saturday",
},
];
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
body: Padding(
padding: const EdgeInsets.symmetric(horizontal: 24.0, vertical: 64.0),
child: Column(
children: [
Column(
children: List.generate(
checkListItems.length,
(index) => CheckboxListTile(
controlAffinity: ListTileControlAffinity.leading,
contentPadding: EdgeInsets.zero,
dense: true,
title: Text(
checkListItems[index]["title"],
style: const TextStyle(
fontSize: 16.0,
color: Colors.black,
),
),
value: checkListItems[index]["value"],
onChanged: (value) {
setState(() {
checkListItems[index]["value"] = value;
if (multipleSelected.contains(checkListItems[index])) {
multipleSelected.remove(checkListItems[index]);
} else {
multipleSelected.add(checkListItems[index]);
}
});
},
),
),
),
const SizedBox(height: 64.0),
Text(
multipleSelected.isEmpty ? "" : multipleSelected.toString(),
style: const TextStyle(
fontSize: 22.0,
color: Colors.black,
fontWeight: FontWeight.bold,
),
),
],
),
),
);
}
}