flutter:即使流未设置为播放[just_audio]，也会持续缓冲消耗数据

Question

描述错误我以这里的例子为例https://pub.dev/packages/just_audio#-示例选项卡-我有一个实时流音频，一旦加载UI，应用程序就会一直在后台缓冲流。因此消耗数据。我们如何告诉玩家只有在按下播放按钮时才启动缓冲区。这是我的代码

import 'package:flutter/material.dart';
import 'package:just_audio/just_audio.dart';
void main() => runApp(RadioTest());
class RadioTest extends StatefulWidget {
@override
_RadioTestState createState() => _RadioTestState();
}
class _RadioTestState extends State<RadioTest> {
AudioPlayer audioPlayer;

String url = "http://canada1.reliastream.com:8052/live?type=.mp3";
@override
void initState() {
super.initState();
audioPlayer = AudioPlayer();
audioPlayer.setUrl(url).catchError((error){
print(error);
});
print("Radio Activated");
}
@override
void dispose() {
audioPlayer.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("Radio Test"),
),
body: Container(
child: Row(
children: <Widget>[
Text("Hi"),
StreamBuilder<FullAudioPlaybackState>(
stream: audioPlayer.fullPlaybackStateStream,
builder: (context, snapshot) {
final fullState = snapshot.data;
final state = fullState?.state;
final buffering = fullState?.buffering;
return Row(
mainAxisSize: MainAxisSize.min,
children: [
if (state == AudioPlaybackState.connecting ||
buffering == true)
Container(
margin: EdgeInsets.all(8.0),
width: 64.0,
height: 64.0,
child: CircularProgressIndicator(),
)
else if (state == AudioPlaybackState.playing)
IconButton(
icon: Icon(Icons.pause),
iconSize: 64.0,
onPressed: audioPlayer.pause,
)
else
IconButton(
icon: Icon(Icons.play_arrow),
iconSize: 64.0,
onPressed: audioPlayer.play,
),
IconButton(
icon: Icon(Icons.stop),
iconSize: 64.0,
onPressed: state == AudioPlaybackState.stopped ||
state == AudioPlaybackState.none
? null
: audioPlayer.stop,
),
],
);
},
),
],
),
),
),
);
}
}

预期行为在按下播放按钮之前，它不应该在应用程序打开时缓冲。

智能手机(请填写以下信息(：

设备：Iphone 11 pro

操作系统：iOS 13

颤振刮刀

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Answer 1

尝试使用setAudioSource

@override
void initState() {
super.initState();
audioPlayer = AudioPlayer();
audioPlayer.setAudioSource(AudioSource.uri(Uri(path: url)));
}

void main() => runApp(MaterialApp(home: RadioTest()));
class RadioTest extends StatefulWidget {
@override
_RadioTestState createState() => _RadioTestState();
}
class _RadioTestState extends State<RadioTest> {
late AudioPlayer audioPlayer;
String url = "http://canada1.reliastream.com:8052/live?type=.mp3";
@override
void initState() {
super.initState();
audioPlayer = AudioPlayer();
audioPlayer.setUrl(url).catchError((error) {
print(error);
});
}
@override
void dispose() {
audioPlayer.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
floatingActionButton: FloatingActionButton(onPressed: () {
audioPlayer.play();
}),
);
}
}

和播放呼叫await audioPlayer.play()