Why onDurationChanged is not called in Flutter ios? - ios

Question

I'm using audioplayers: 1.1.0 library to play audio from url
I use the onDurationChanged method to get the audio file length. This is working perfectly on android but in iOS the onDurationChanged is not getting called.
I tried all solutions available in the internet. Noting helps as expected. Your help wil save my day.
Note: If I use
player.play(UrlSource('theme_01.mp3'));
Now works fine. But If I use
player.play(UrlSource('https://www.kozco.com/tech/LRMonoPhase4.mp3');
onDurationChanged is not working
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');
}
final AudioContext audioContext = AudioContext(
iOS: AudioContextIOS(
defaultToSpeaker: true,
category: AVAudioSessionCategory.ambient,
options: [
AVAudioSessionOptions.defaultToSpeaker,
AVAudioSessionOptions.mixWithOthers,
],
),
android: AudioContextAndroid(
isSpeakerphoneOn: true,
stayAwake: true,
contentType: AndroidContentType.sonification,
usageType: AndroidUsageType.assistanceSonification,
audioFocus: AndroidAudioFocus.none,
),
);
#override
void initState() {
super.initState();
AudioPlayer.global.setGlobalAudioContext(audioContext);
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(UrlSource('theme_01.mp3'));
// If I use local audio works fine. But If I use the below audio url onDurationChanged is not called.
player.play(UrlSource('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)),
],
),
),
],
),
),
);
}
}