I am developing a task book, most of the tasks I have implemented but there is one that I can't solve, when I add a task it is added to the end of the list, and I want it to be at the top of the list. And also there is a problem when the theme changes, I want that if the theme is black, the text "Tasks +" were white and vice versa. Here is my code:
import 'package:flutter/material.dart';
void main(){
runApp(MaterialApp(
home: App(),
));
}
class ListItem{
String todoText;
bool todoCheck;
ListItem(this.todoText, this.todoCheck);
}
class _strikeThrough extends StatelessWidget{
final String todoText;
final bool todoCheck;
_strikeThrough(this.todoText, this.todoCheck) : super();
Widget _widget(){
if(todoCheck){
return Text(
todoText,
style: TextStyle(
fontSize: 22.0,
),
);
}
else{
return Text(
todoText,
style: TextStyle(
fontSize: 22.0
),
);
}
}
@override
Widget build(BuildContext context){
return _widget();
}
}
const Color ColorTextW = Colors.black;
class App extends StatefulWidget{
@override
AppState createState(){
return AppState();
}
}
final ValueNotifier<ThemeMode> _notifier = ValueNotifier(ThemeMode.light);
late Color ColorType = Colors.black;
class AppState extends State<App> {
bool valText = true;
var counter = 0;
var IconsType = Icons.wb_sunny ;
late Color ColorType = Colors.black;
var textController = TextEditingController();
var popUpTextController = TextEditingController();
List<ListItem> WidgetList = [];
@override
void dispose() {
textController.dispose();
popUpTextController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return ValueListenableBuilder<ThemeMode>(
valueListenable: _notifier,
builder: (_, mode, __) {
return MaterialApp(
theme: ThemeData.light(),
darkTheme: ThemeData.dark(),
themeMode: mode, // Decides which theme to show, light or dark.
home: Scaffold(
appBar: AppBar(
title: Text("Список задач"),
actions: <Widget>[
IconButton(
icon: Icon(IconsType,color : ColorType
),
onPressed:() =>
{
if (_notifier.value == ThemeMode.light) {
_notifier.value = ThemeMode.dark,
IconsType = Icons.dark_mode,
ColorType = Colors.white,
} else
{
_notifier.value = ThemeMode.light,
IconsType = Icons.wb_sunny,
ColorType = Colors.black,
}
}
)
],
//backgroundColor: Colors.orange[500],
iconTheme: IconThemeData(
color: Colors.white
),
),
body: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Container(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Text(
"Tasks",
style: TextStyle(
fontSize: 70.0,
fontWeight: FontWeight.bold,
color: ColorTextW,
),
),
IconButton(
color: Colors.black,
iconSize: 70,
constraints: const BoxConstraints(),
padding: EdgeInsets.fromLTRB(30.0, 10.0, 30, 10.0),
icon: const Icon(Icons.add_outlined),
onPressed: () {
if (textController.text.replaceAll(" ", "").isNotEmpty) {
WidgetList.add(
new ListItem(textController.text.replaceAll(" ", ""), false));
setState(() {
valText = true;
textController.clear();
});
}
else
{
setState(() {
valText = false;
});
}
},
)
],
),
),
Container(
width: MediaQuery
.of(context)
.size
.height * 0.45,
child: TextField(
style: TextStyle(
fontSize: 22.0,
//color: Theme.of(context).accentColor,
),
controller: textController,
cursorWidth: 5.0,
autocorrect: true,
autofocus: true,
//onSubmitted: ,
),
),
Align(
child:
(valText == false) ?
Align(child: Text(("Задача пустая"),
style: TextStyle(
fontSize: 25.0, color: Colors.red)),
alignment: Alignment.center) :
Align(child: Text((""),),
alignment: Alignment.center)),
Expanded(
child: ReorderableListView(
children: <Widget>[
for(final widget in WidgetList)
GestureDetector(
key: Key(widget.todoText),
child: Dismissible(
key: Key(widget.todoText),
child: CheckboxListTile(
controlAffinity: ListTileControlAffinity.leading,
//key: ValueKey("Checkboxtile $widget"),
value: widget.todoCheck,
title: _strikeThrough(
widget.todoText, widget.todoCheck),
onChanged: (checkValue) {
//_strikethrough toggle
setState(() {
if (!checkValue!) {
widget.todoCheck = false;
}
else {
widget.todoCheck = true;
}
});
},
),
background: Container(
child: Icon(Icons.delete),
alignment: Alignment.centerRight,
color: Colors.redAccent,
),
direction: DismissDirection.endToStart,
movementDuration: const Duration(
milliseconds: 200),
onDismissed: (dismissDirection) { //Delete Todo
WidgetList.remove(widget);
},
),
)
],
onReorder: (oldIndex, newIndex) {
setState(() {
if (newIndex > oldIndex) {
newIndex -= 1;
}
var replaceWiget = WidgetList.removeAt(oldIndex);
WidgetList.insert(newIndex, replaceWiget);
});
},
),
)
],
),
)
);
}
);
}
}
