Android MediaPlayer java.io.IOException:准备失败.:status = 0x1 [英] Android MediaPlayer java.io.IOException: Prepare failed.: status=0x1

问题描述

我正在使用Android的MediaPlayer在我的应用程序中设置URL流.我尝试了几种不同的方法来处理退出代码和错误:(1，-2147483648).

I am using Android's MediaPlayer to set up a URL stream in my application. I have tried several different posts to deal with the exit code and error: (1, -2147483648).

我尝试了几种不同的流，但是我似乎无法使MediaPlayer正常工作.我曾考虑过要使用Google的ExoPlayer，但它要复杂一些，如果我遗漏了某些东西，我不想跳船.

I have attempted several different streams, but I can't seem to get the MediaPlayer to work. I have thought about moving over the Google's ExoPlayer but it is a little more complex and I don't want to jump ship in case I am missing something.

MediaPlayer:

MediaPlayer:

private MediaPlayer player;
String url = "http://199.180.75.118:80/stream";     //temp stream
private void initializeMediaPlayer() {
    player = new MediaPlayer();
    player.setAudioAttributes( new AudioAttributes.Builder()
        .setUsage(AudioAttributes.USAGE_MEDIA)
        .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
        .build());

    try { 
        player.setDataSource(url);
        player.prepareAsync();
        player.setOnPreparedListener(new OnPreparedListener() {
            public void onPrepared(MediaPlayer mp) {
                mp.start();
            }
        });
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } 
}

我还包括了android权限:

I have also included the android permission:

<uses-permission android:name="android.permission.INTERNET" /> 

我尝试使用原始流类型(但是它引发了不建议使用的警告):

I have attempted to use the original stream type (but it throws a deprecated warning):

player.setAudioStreamType(AudioManager.STREAM_MUSIC);

所以我改用了.setAudioAttributes(...) 我试图只运行prepare()而不是prepareAsync()，这给出了问题的标题，但是我仍然会导致相同的错误.我已经仔细调查了实际的错误定义( Android MediaPlayer错误(1，-2147483648) ).我认为这不是源问题，因为我尝试了其他多个流.如果我跳过了可能导致我出错的关键问题，请告诉我.

So instead I used the .setAudioAttributes(...) I have attempted to just run prepare() instead of prepareAsync() which gave the title of the problem, but I still result in the same error. I have looked into the actual error definition with no luck either (Android MediaPlayer error (1, -2147483648)). I don't think it is a source issue since I have tried multiple other streams. Please let me know if I am skipping over something crucial that might be causing my error.

修改 如果有帮助，我一直在调查呼叫，发现MediaPlayer从未呼叫onPrepared(...).我检查了我正在测试的所有媒体的Content-Type，它们都是音频/MPEG标头.所以我不明白为什么MediaPlay无法访问onPrepared.

Edit If it helps at all, I have been looking into my calls and I found out that MediaPlayer is never calling onPrepared(...). I checked the Content-Types of all of the media I have been testing and they have all been audio/MPEG headers. So I don't understand why the MediaPlay isn't accessing the onPrepared.

推荐答案

private void initializeMediaPlayer() {
        player = new MediaPlayer();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            player.setAudioAttributes(new AudioAttributes.Builder()
                    .setUsage(AudioAttributes.USAGE_MEDIA)
                    .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
                    .setLegacyStreamType(AudioManager.STREAM_MUSIC)
                    .build());
        } else {
            player.setAudioStreamType(AudioManager.STREAM_MUSIC);
        }
        try {
            player.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                @Override
                public void onPrepared(MediaPlayer mp) {
                    mp.start();
                }
            });
            player.setDataSource(url);
            player.prepareAsync();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

onPrepared呼叫可以在几秒钟内完成.

onPrepared calling in seconds.

在android 9中，选中此https://developer.android.com/training/articles/security-config

In android 9, check this https://developer.android.com/training/articles/security-config

AndroidManifest.xml添加networkSecurityConfig属性

AndroidManifest.xml add networkSecurityConfig attributes

...
<application
android:networkSecurityConfig="@xml/network_security_config"
...>
...

在src/res/xml中添加network_security_config.xml文件

in src/res/xml add network_security_config.xml file

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="true">
        <trust-anchors>
            <certificates src="system" />
            <certificates src="user" />
        </trust-anchors>
    </base-config>
</network-security-config>

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