I'm using audioplayers: 1.1.0 plugin to play audio from url. It's playing well. But the player.onPositionChanged after particular seconds it restarts and timer starts from 0.
So that my slider again starts from 0.
player.onPositionChanged.listen((newPosition) {
prints(newPosition);
});
Output:
0:00:00.000000
0:00:00.002000
0:00:00.203000
0:00:00.405000
0:00:00.607000
0:00:00.810000
0:00:01.013000
0:00:01.215000
0:00:02.027000
0:00:02.232000
0:00:03.863000
0:00:04.882000
0:00:00.236000 // after some seconds again returns from 0
0:00:00.438000
0:00:00.641000
0:00:01.052000
0:00:01.662000
0:00:01.864000
As this function returns again from 0, Slider also restarting as below
This is the entire code
audioplayers: 1.1.0
import 'package:flutter/material.dart';
import 'package:audioplayers/audioplayers.dart';
import 'dart:async';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Audio Player'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
#override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final player = AudioPlayer();
bool isPlaying = false;
Duration duration = Duration.zero;
Duration position = Duration.zero;
String formatTime(int seconds) {
return '${(Duration(seconds: seconds))}'.split('.')[0].padLeft(8, '0');
}
#override
void initState() {
super.initState();
player.onPlayerStateChanged.listen((state) {
setState(() {
isPlaying = state == PlayerState.playing;
});
});
player.onDurationChanged.listen((newDuration) {
setState(() {
duration = newDuration;
});
});
player.onPositionChanged.listen((newPosition) {
setState(() {
position = newPosition;
});
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Slider(
min: 0,
max: duration.inSeconds.toDouble(),
value: position.inSeconds.toDouble(),
onChanged: (value) {
final position = Duration(seconds: value.toInt());
player.seek(position);
player.resume();
},
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
CircleAvatar(
radius: 25,
child: IconButton(
icon: Icon(
isPlaying ? Icons.pause : Icons.play_arrow,
),
onPressed: () {
if (isPlaying) {
player.pause();
} else {
player.play("https://www.kozco.com/tech/LRMonoPhase4.mp3");
}
},
),
),
SizedBox(
width: 20,
),
CircleAvatar(
radius: 25,
child: IconButton(
icon: const Icon(Icons.stop),
onPressed: () {
player.stop();
},
),
),
],
),
Container(
padding: const EdgeInsets.all(20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(formatTime(position.inSeconds)),
Text(formatTime((duration - position).inSeconds)),
],
),
),
],
),
),
);
}
}
Related
I am new to Flutter and went on to do the codelabs - first flutter app
Since I'm learning Flutter to develop mobile apps, this tutorials use of NavigationRail isn't too good looking on a phone. I tried to switch it out for a BottomNavigationBar. When changing the background color of the navbar I noticed it doesnt expand to use the full screen. Is it always like this, or is there something making it display it this way in the code?Could'nt find any useful information about this case.
Is it possible to make the green background cover the, here black, area at the bottom of the screen?
Area under bar, white when debugging on real device, here it is black
The final code from the tutorial is poorly adjusted to:
import 'package:english_words/english_words.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
#override
Widget build(BuildContext context) {
return ChangeNotifierProvider(
create: (context) => MyAppState(),
child: MaterialApp(
title: 'Namer App',
theme: ThemeData(
useMaterial3: true,
colorScheme: ColorScheme.fromSeed(seedColor: Colors.green),
),
home: MyHomePage(),
),
);
}
}
class MyAppState extends ChangeNotifier {
var current = WordPair.random();
void getNext() {
current = WordPair.random();
notifyListeners();
}
var favorites = <WordPair>[];
void toggleFavorite() {
if (favorites.contains(current)) {
favorites.remove(current);
} else {
favorites.add(current);
}
notifyListeners();
}
}
class MyHomePage extends StatefulWidget {
#override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
var selectedIndex = 0;
#override
Widget build(BuildContext context) {
Widget page;
switch(selectedIndex){
case 0:
page = GeneratorPage();
break;
case 1:
page = FavoritesPage();
break;
default:
throw UnimplementedError('no widget for $selectedIndex');
}
return LayoutBuilder(
builder: (context, constraints) {
return Scaffold(
body: Center(
child: page,
),
bottomNavigationBar: BottomNavigationBar (
items: const <BottomNavigationBarItem>[
BottomNavigationBarItem(
icon: Icon(Icons.home),
label: 'Home',
),
BottomNavigationBarItem(
icon: Icon(Icons.favorite),
label: 'Favorites',
),
],
currentIndex: selectedIndex,
onTap: _onItemTapped,
backgroundColor: Theme.of(context).colorScheme.secondaryContainer,
elevation: 0.0,
),
);
}
);
}
void _onItemTapped(int index){
setState(() {
selectedIndex = index;
});
}
}
class FavoritesPage extends StatelessWidget {
#override
Widget build(BuildContext context) {
var appState = context.watch<MyAppState>();
if (appState.favorites.isEmpty) {
return Center(
child: Text('No favorites yet.'),
);
}
return ListView(
children: [
Padding(
padding: const EdgeInsets.all(20),
child: Text('You have '
'${appState.favorites.length} favorites:'),
),
for (var pair in appState.favorites)
ListTile(
leading: Icon(Icons.favorite),
title: Text(pair.asLowerCase),
),
],
);
}
}
class GeneratorPage extends StatelessWidget {
#override
Widget build(BuildContext context) {
var appState = context.watch<MyAppState>();
var pair = appState.current;
IconData icon;
if (appState.favorites.contains(pair)) {
icon = Icons.favorite;
} else {
icon = Icons.favorite_border;
}
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
BigCard(pair: pair),
SizedBox(height: 10),
Row(
mainAxisSize: MainAxisSize.min,
children: [
ElevatedButton.icon(
onPressed: () {
appState.toggleFavorite();
},
icon: Icon(icon),
label: Text('Like'),
),
SizedBox(width: 10),
ElevatedButton(
onPressed: () {
appState.getNext();
},
child: Text('Next'),
),
],
),
],
),
);
}
}
class BigCard extends StatelessWidget {
const BigCard({
Key? key,
required this.pair,
}) : super(key: key);
final WordPair pair;
#override
Widget build(BuildContext context) {
var theme = Theme.of(context);
var style = theme.textTheme.displayMedium!.copyWith(
color: theme.colorScheme.onPrimary,
);
return Card(
color: theme.colorScheme.primary,
elevation: 10,
child: Padding(
padding: const EdgeInsets.all(20),
child: Text(pair.asLowerCase, style: style),
),
);
}
}
Tried changing elevation to 0.0, expandbody and what not. Nothing seems to be working here?
You can use SystemUiOverlayStyle class
class _MyHomePageState extends State<MyHomePage> {
#override
void initState() {
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.light
.copyWith(systemNavigationBarColor: Colors.greenAccent));
super.initState();
}
how to control slider with add and subtract buttons in flutter UI
Try this code :
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
static const String _title = 'Flutter Code Sample';
#override
Widget build(BuildContext context) {
return MaterialApp(
title: _title,
home: Scaffold(
appBar: AppBar(title: const Text(_title)),
body: const MyStatefulWidget(),
),
);
}
}
class MyStatefulWidget extends StatefulWidget {
const MyStatefulWidget({super.key});
#override
State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
double _currentSliderValue = 20;
int divisons=20;
#override
Widget build(BuildContext context) {
return Column(
children: [
Row(
children: [
IconButton(
icon: Icon(Icons.remove),
onPressed: () {
setState(() {
_currentSliderValue -= divisons;
});
},
),
Text(_currentSliderValue.toString()),
IconButton(
icon: Icon(Icons.add),
onPressed: () {
setState(() {
_currentSliderValue += divisons;
});
},
),
],
),
Slider(
value: _currentSliderValue,
max: 100,
divisions: 5,
label: _currentSliderValue.round().toString(),
onChanged: (double value) {
setState(() {
_currentSliderValue = value;
});
},
),
],
);
}
}
Hope this helps.
Simplified sample
class MyWidget extends StatefulWidget{
#override
_MyWidgetState createState() => _MyWidgetState();
}
class _MyWidgetState extends State<MyWidget> {
int _value = 5;
double min = 1.0;
double max = 20.0;
#override
Widget build(BuildContext context) {
return Column(
children:[
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children:[
IconButton(onPressed:(){
setState((){
if(_value < max){
/// Add as many as you want
_value++;
}
});
}, icon: const Icon(Icons.add)),
IconButton(onPressed:(){
setState((){
if(_value > min){
/// Subtract as many as you want
_value--;
}
});
}, icon: const Icon(Icons.remove)),
]
),
Slider(
value: _value.toDouble(),
min: min,
max: max,
activeColor: Colors.green,
inactiveColor: Colors.orange,
label: 'Set volume value',
onChanged: (double newValue) {
setState(() {
_value = newValue.round();
});
},
),
]);
}
}
here I have made a demo on learning purpose, it might help u
class _SliderPageState extends State<SliderPage> {
double _currentSliderValue=15.0;
#override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
IconButton(onPressed: (){
setState(() {
if(_currentSliderValue<100)
_currentSliderValue=_currentSliderValue+1;
});
}, icon: Icon(Icons.add)),
Text(_currentSliderValue.round().toString(),style: TextStyle(fontWeight: FontWeight.bold,fontSize: 24),),
IconButton(onPressed: (){
setState(() {
if(_currentSliderValue>1)
_currentSliderValue=_currentSliderValue-1;
});
}, icon: Icon(Icons.remove)),
],),
Slider(
value: _currentSliderValue,
max: 100,
divisions: 100,
//label: _currentSliderValue.round().toString(),
onChanged: (double value) {
setState(() {
_currentSliderValue = value;
});
},
),
],)
),
);
}
}
So I was trying to make a feature where when we click an icon button it will change the video path. It will change the video path using string. I was using a print("$videoname"), to make sure the string changes, and it does. But it still doesn't work, with the videoplayercontroller.assets():
Here's the code that I was trying to make
String videoname="Video/Intro.mp4";
Container(
child:Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
ChewieListItem(
videoPlayerController: VideoPlayerController.asset(videoname),
looping: false,
),
Container(
margin: EdgeInsets.symmetric(vertical: 20.0),
height: 100.0,
child: ListView(
scrollDirection: Axis.horizontal,
children: [
IconButton(
icon:Icon(Icons.people),
onPressed: (){
videoname="Video/Intro.mp4";
print("$videoname");
},
),
IconButton(
icon:Icon(Icons.personal_video),
onPressed: (){
videoname="Video/Intro1.mp4";
print("$videoname");
},
),
],
),
),
)
You can copy paste run full code below
Step 1: Use key: UniqueKey() in ChewieListItem
Step 2: Use setState in onPressed
code snippet
ChewieListItem(
key: UniqueKey(),
videoPlayerController: VideoPlayerController.asset(videoname),
looping: false,
),
IconButton(
icon: Icon(Icons.people),
onPressed: () {
setState(() {
videoname = "Video/Intro.mp4";
print("$videoname");
});
},
),
IconButton(
icon: Icon(Icons.personal_video),
onPressed: () {
setState(() {
videoname = "Video/Intro1.mp4";
print("$videoname");
});
},
),
working demo
full code
import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';
import 'package:chewie/chewie.dart';
class ChewieListItem extends StatefulWidget {
// This will contain the URL/asset path which we want to play
final VideoPlayerController videoPlayerController;
final bool looping;
ChewieListItem({
#required this.videoPlayerController,
this.looping,
Key key,
}) : super(key: key);
#override
_ChewieListItemState createState() => _ChewieListItemState();
}
class _ChewieListItemState extends State<ChewieListItem> {
ChewieController _chewieController;
#override
void initState() {
super.initState();
print("ChewieListItem initState");
// Wrapper on top of the videoPlayerController
_chewieController = ChewieController(
videoPlayerController: widget.videoPlayerController,
aspectRatio: 16 / 9,
// Prepare the video to be played and display the first frame
autoInitialize: true,
looping: widget.looping,
// Errors can occur for example when trying to play a video
// from a non-existent URL
errorBuilder: (context, errorMessage) {
return Center(
child: Text(
errorMessage,
style: TextStyle(color: Colors.white),
),
);
},
);
}
#override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Chewie(
controller: _chewieController,
),
);
}
#override
void dispose() {
print("ChewieListItem dispose");
super.dispose();
// IMPORTANT to dispose of all the used resources
widget.videoPlayerController.dispose();
_chewieController.dispose();
}
}
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: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String videoname = "Video/Intro.mp4";
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Container(
child:
Column(crossAxisAlignment: CrossAxisAlignment.start, children: [
ChewieListItem(
key: UniqueKey(),
videoPlayerController: VideoPlayerController.asset(videoname),
looping: false,
),
Container(
margin: EdgeInsets.symmetric(vertical: 20.0),
height: 100.0,
child: ListView(
scrollDirection: Axis.horizontal,
children: [
IconButton(
icon: Icon(Icons.people),
onPressed: () {
setState(() {
videoname = "Video/Intro.mp4";
print("$videoname");
});
},
),
IconButton(
icon: Icon(Icons.personal_video),
onPressed: () {
setState(() {
videoname = "Video/Intro1.mp4";
print("$videoname");
});
},
),
],
),
),
])),
);
}
}
setState should work for you
onPressed: () {
setState(() {
videoname="Video/Intro1.mp4";
print("$videoname");
});
},
I wanted to change the color of the counter in my app. I want to do that: change the color of the counter to blue when counter bigger than 0. if counter smaller than 0 change the color of the counter to red.if counter equal to 0 change the color of the counter to green. is it possible? I did just for 2 colors.
it is my codes :
import 'package:flutter/material.dart';
void main() {
runApp(Myapp());
}
class Myapp extends StatefulWidget {
#override
_MyappState createState() => _MyappState();
}
class _MyappState extends State<Myapp> {
#override
Widget build(BuildContext context) {
// TODO: implement build
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Myhomepage(
title: "My Home Page",
),
);
}
}
class Myhomepage extends StatefulWidget {
final String title;
Myhomepage({this.title});
#override
_MyhomepageState createState() => _MyhomepageState();
}
class _MyhomepageState extends State<Myhomepage> {
int counter = 0;
#override
Widget build(BuildContext context) {
// TODO: implement build
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
centerTitle: true,
),
floatingActionButton: FloatingActionButton(
child: Icon(Icons.add),
backgroundColor: Colors.grey[850],
onPressed: () {
setState(() {
counter++;
});
}),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
child: Text(
"Increase",
),
color: Colors.green,
onPressed: () {
setState(() {
counter++;
});
},
),
Text("The count of press button:"),
Text(
"$counter",
style: Theme.of(context).textTheme.display2.copyWith(color: counter<=0 ? Colors.red : Colors.blue)
),
RaisedButton(
child: Text(
"Decrease",
),
color: Colors.red,
onPressed: () {
setState(() {
counter--;
});
},
),
],
),
),
);
}
}
it is my results :
Here's one way you can implement the system you want. I just made a function that returns the desired color.
class _MyhomepageState extends State<Myhomepage> {
int counter = 0;
Color _getCounterColor() {
if (counter > 0) return Colors.blue;
else if (counter < 0) return Colors.red;
else return Colors.green;
}
#override
Widget build(BuildContext context) {
// TODO: implement build
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
centerTitle: true,
),
floatingActionButton: FloatingActionButton(
child: Icon(Icons.add),
backgroundColor: Colors.grey[850],
onPressed: () {
setState(() {
counter++;
});
}),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
child: Text(
"Increase",
),
color: Colors.green,
onPressed: () {
setState(() {
counter++;
});
},
),
Text("The count of press button:"),
Text(
"$counter",
style: Theme.of(context).textTheme.display2.copyWith(color: _getCounterColor()),
),
RaisedButton(
child: Text(
"Decrease",
),
color: Colors.red,
onPressed: () {
setState(() {
counter--;
});
},
),
],
),
),
);
}
}
I'm trying to make a clicker-like app to test myself. Everything was perfect until I came to async thing. The thing I want to do is a program that multiplies itself by it's house numbers. Like, user if user has 2 home, user should earn 2 points per second. I read the original documentation of dart and made it from copying there.
Code:
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:async/async.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Zikirmatik'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
int _max = 0;
int _ev = 0;
int _toplanan = 0;
void _incrementCounter() {// Eklemeler sürekli tekrar çağrıldığı için bunları ayrı bir voide almamız gerek
setState(() { //Tekrar çağrılmasını sağlayan komut
_counter++;
});
}
void _decreaseCounter(){
setState(() {
_counter--;
});
}
void _resetCounter(){
setState(() {
_counter = 0;
});
}
void _evArttiran(){
setState(() {
_ev++;
});
}
void _otoArttiran(){
setState(() {
_toplanan = _ev * 1;
});
}
#override
Widget build(BuildContext context) {
if(_counter > _max){ //Yüksek skor if'i
_max = _counter;
}
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'Skor:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1, // Anlık skoru kalın göstern
),
Text(
'Yüksek Skor:',
),
Text(
'$_max',
),
Text(
'Ev Sayısı:',
),
Text(
'$_ev',
),
OutlineButton( // Büyük button
onPressed: () => _incrementCounter(), // Ayrı bi void yazmamak için fat işaret kullanıyoruz
child: Container(
width: 1000, // Ayarlamazsanız küçük oluyor
height: 500,
child: Icon(Icons.add, size:100)
)
)
],
),
),
floatingActionButton: Row( //Yan yana düğme yazmak için Row gerek
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
FloatingActionButton( //Düz ufak butonlar
onPressed: _evArttiran,
child: Icon(Icons.home),
),
],
)
);
}
main() async{
Timer(Duration(seconds: 1), () {
_otoArttiran;
debugPrint(_toplanan.toString());
_counter += _toplanan;
});
}
}
You need to create a periodic timer and don't forget to put () after _otoArttiran inside the timer callback:
main() async{
Timer.periodic(Duration(seconds: 1), (_) {
_otoArttiran();
debugPrint(_toplanan.toString());
_counter += _toplanan;
});
}
You need to call this function in order for the timer to start working, so let's add initState method to your _MyHomePageState:
#override void initState() {
super.initState();
main();
}
Done!
So here is the complete code:
import 'dart:async';
import 'package:flutter/material.dart';
void main() => runApp(new TheApp());
class TheApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Zikirmatik'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
int _max = 0;
int _ev = 0;
int _toplanan = 0;
#override void initState() {
super.initState();
main();
}
void _incrementCounter() {// Eklemeler sürekli tekrar çağrıldığı için bunları ayrı bir voide almamız gerek
setState(() { //Tekrar çağrılmasını sağlayan komut
_counter++;
});
}
void _decreaseCounter(){
setState(() {
_counter--;
});
}
void _resetCounter(){
setState(() {
_counter = 0;
});
}
void _evArttiran(){
setState(() {
_ev++;
});
}
void _otoArttiran(){
setState(() {
_toplanan = _ev * 1;
});
}
#override
Widget build(BuildContext context) {
if(_counter > _max){ //Yüksek skor if'i
_max = _counter;
}
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'Skor:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1, // Anlık skoru kalın göstern
),
Text(
'Yüksek Skor:',
),
Text(
'$_max',
),
Text(
'Ev Sayısı:',
),
Text(
'$_ev',
),
OutlineButton( // Büyük button
onPressed: () => _incrementCounter(), // Ayrı bi void yazmamak için fat işaret kullanıyoruz
child: Container(
width: 1000, // Ayarlamazsanız küçük oluyor
height: 500,
child: Icon(Icons.add, size:100)
)
)
],
),
),
floatingActionButton: Row( //Yan yana düğme yazmak için Row gerek
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
FloatingActionButton( //Düz ufak butonlar
onPressed: _evArttiran,
child: Icon(Icons.home),
),
],
)
);
}
main() async{
Timer.periodic(Duration(seconds: 1), (_) {
_otoArttiran();
debugPrint(_toplanan.toString());
_counter += _toplanan;
});
}
}
I'm not sure if i understood correctly but maybe you can to try something like this:
(inside _MyHomePageState)
#override
void initState() {
super.initState();
Timer.periodic(Duration(seconds: 1), (timer) {
setState(() {
_counter = _counter + _ev;
});
});
}