blocks|key|1373971|text|我遇到了与您相同的错误，结果发现代码没有任何问题。问题是was服务器发送了错误的Content-Type头。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1373972|尝试使用wireshark或类似的工具来查看see服务器发送的内容类型。|1373973|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I've had the same error as you have and it turned out that there was nothing wrong with the code. The problem was that the webserver was sending the wrong Content-Type header.

Try wireshark or something similar to see what content-type the webserver is sending.

blocks|key|1374038|text|不使用OnPreparedListener调用mp.start以避免日志中的零状态。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374039|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

No call mp.start with an OnPreparedListener to avoid the zero state i the log..

blocks|key|1374117|text|Android+MediaPlayer在2.2版本之前不支持MP3的原生流式传输。在较旧版本的操作系统中，它似乎只在本地流传输3GP。你可以尝试一下pocketjourney代码，尽管它很旧(有一个new+version+here)，而且我很难让它变得粘性--每当它重新填充缓冲区时，它就会卡顿。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1374118|用于安卓的NPR新闻应用程序是开源的，并使用本地代理服务器来处理2.2版本之前操作系统中的MP3流媒体。您可以在这里的199-216行(r94)中看到相关代码：http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/PlaybackService.java?r=7cf2352b5c3c0fbcdc18a5a8c67d836577e7e8e3|1374119|这是StreamProxy类：http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/StreamProxy.java?r=e4984187f45c39a54ea6c88f71197762dbe10e72|1374120|NPR应用程序有时在流媒体时仍然会收到"error+(-38，0)“。这可能是线程问题或网络更改问题。检查issue+tracker+for+updates。|1374121|entityMap|0|LINK|mutability|MUTABLE|url|http://blog.pocketjourney.com/2009/12/27/android-streaming-mediaplayer-tutorial-updated-to-v1-5-cupcake/|1|http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/PlaybackService.java?r=7cf2352b5c3c0fbcdc18a5a8c67d836577e7e8e3|2|http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/StreamProxy.java?r=e4984187f45c39a54ea6c88f71197762dbe10e72|3|http://code.google.com/p/npr-android-app/issues/detail?id=2^0|2R|G|0|0|28|43|1|0|F|3Z|2|0|1H|P|3|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|E|5|6|7|11|8|@]|9|@$A|12|B|13|1|14]]|C|$]]|$1|F|3|G|5|6|7|15|8|@]|9|@$A|16|B|17|1|18]]|C|$]]|$1|H|3|I|5|6|7|19|8|@]|9|@$A|1A|B|1B|1|1C]]|C|$]]|$1|J|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]|T|$5|M|N|O|C|$P|U]]|V|$5|M|N|O|C|$P|W]]]]

Android MediaPlayer doesn't support streaming of MP3 natively until 2.2. In older versions of the OS it appears to only stream 3GP natively. You can try the pocketjourney code, although it's old (there's a <a href="http://blog.pocketjourney.com/2009/12/27/android-streaming-mediaplayer-tutorial-updated-to-v1-5-cupcake/" rel="noreferrer">new version here</a>) and I had trouble making it sticky — it would stutter whenever it refilled the buffer. 

The NPR News app for Android is open source and uses a local proxy server to handle MP3 streaming in versions of the OS before 2.2. You can see the relevant code in lines 199-216 (r94) here: <a href="http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/PlaybackService.java?r=7cf2352b5c3c0fbcdc18a5a8c67d836577e7e8e3" rel="noreferrer">http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/PlaybackService.java?r=7cf2352b5c3c0fbcdc18a5a8c67d836577e7e8e3</a>

And this is the StreamProxy class: <a href="http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/StreamProxy.java?r=e4984187f45c39a54ea6c88f71197762dbe10e72" rel="noreferrer">http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/StreamProxy.java?r=e4984187f45c39a54ea6c88f71197762dbe10e72</a>

The NPR app is also still getting the "error (-38, 0)" sometimes while streaming. This may be a threading issue or a network change issue. Check the <a href="http://code.google.com/p/npr-android-app/issues/detail?id=2" rel="noreferrer">issue tracker for updates</a>.

blocks|key|1374217|text|简单的媒体播放器与流式example.For可扩展标示语言部分，你需要一个按钮与id+button1和两个图像在您的绘图文件夹与名称button_pause和button_play，并请不要忘记添加互联网权限在您的清单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374218|public+class+MainActivity+extends+Activity+{
private+Button+btn;
/**
+*+help+to+toggle+between+play+and+pause.
+*/
private+boolean+playPause;
private+MediaPlayer+mediaPlayer;
/**
+*+remain+false+till+media+is+not+completed,+inside+OnCompletionListener+make+it+true.
+*/
private+boolean+intialStage+=+true;


@Override
protected+void+onCreate(Bundle+savedInstanceState)+{
++++super.onCreate(savedInstanceState);
++++setContentView(R.layout.activity_main);
++++btn+=+(Button)+findViewById(R.id.button1);
++++mediaPlayer+=+new+MediaPlayer();
++++mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
++++btn.setOnClickListener(pausePlay);

}

@Override
public+boolean+onCreateOptionsMenu(Menu+menu)+{
++++//+Inflate+the+menu;+this+adds+items+to+the+action+bar+if+it+is+present.
++++getMenuInflater().inflate(R.menu.activity_main,+menu);
++++return+true;
}

private+OnClickListener+pausePlay+=+new+OnClickListener()+{

++++@Override
++++public+void+onClick(View+v)+{
++++++++//+TODO+Auto-generated+method+stub
++++++++//+TODO+Auto-generated+method+stub

++++++++if+(!playPause)+{
++++++++++++btn.setBackgroundResource(R.drawable.button_pause);
++++++++++++if+(intialStage)
++++++++++++++++new+Player()
++++++++++++++++++++++++.execute("http://www.virginmegastore.me/Library/Music/CD_001214/Tracks/Track1.mp3");
++++++++++++else+{
++++++++++++++++if+(!mediaPlayer.isPlaying())
++++++++++++++++++++mediaPlayer.start();
++++++++++++}
++++++++++++playPause+=+true;
++++++++}+else+{
++++++++++++btn.setBackgroundResource(R.drawable.button_play);
++++++++++++if+(mediaPlayer.isPlaying())
++++++++++++++++mediaPlayer.pause();
++++++++++++playPause+=+false;
++++++++}
++++}
};
/**
+*+preparing+mediaplayer+will+take+sometime+to+buffer+the+content+so+prepare+it+inside+the+background+thread+and+starting+it+on+UI+thread.
+*+@author+piyush
+*
+*/

class+Player+extends+AsyncTask<String,+Void,+Boolean>+{
++++private+ProgressDialog+progress;

++++@Override
++++protected+Boolean+doInBackground(String...+params)+{
++++++++//+TODO+Auto-generated+method+stub
++++++++Boolean+prepared;
++++++++try+{

++++++++++++mediaPlayer.setDataSource(params[0]);

++++++++++++mediaPlayer.setOnCompletionListener(new+OnCompletionListener()+{

++++++++++++++++@Override
++++++++++++++++public+void+onCompletion(MediaPlayer+mp)+{
++++++++++++++++++++//+TODO+Auto-generated+method+stub
++++++++++++++++++++intialStage+=+true;
++++++++++++++++++++playPause=false;
++++++++++++++++++++btn.setBackgroundResource(R.drawable.button_play);
++++++++++++++++++++mediaPlayer.stop();
++++++++++++++++++++mediaPlayer.reset();
++++++++++++++++}
++++++++++++});
++++++++++++mediaPlayer.prepare();
++++++++++++prepared+=+true;
++++++++}+catch+(IllegalArgumentException+e)+{
++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++Log.d("IllegarArgument",+e.getMessage());
++++++++++++prepared+=+false;
++++++++++++e.printStackTrace();
++++++++}+catch+(SecurityException+e)+{
++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++prepared+=+false;
++++++++++++e.printStackTrace();
++++++++}+catch+(IllegalStateException+e)+{
++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++prepared+=+false;
++++++++++++e.printStackTrace();
++++++++}+catch+(IOException+e)+{
++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++prepared+=+false;
++++++++++++e.printStackTrace();
++++++++}
++++++++return+prepared;
++++}

++++@Override
++++protected+void+onPostExecute(Boolean+result)+{
++++++++//+TODO+Auto-generated+method+stub
++++++++super.onPostExecute(result);
++++++++if+(progress.isShowing())+{
++++++++++++progress.cancel();
++++++++}
++++++++Log.d("Prepared",+"//"+%2B+result);
++++++++mediaPlayer.start();

++++++++intialStage+=+false;
++++}

++++public+Player()+{
++++++++progress+=+new+ProgressDialog(MainActivity.this);
++++}

++++@Override
++++protected+void+onPreExecute()+{
++++++++//+TODO+Auto-generated+method+stub
++++++++super.onPreExecute();
++++++++this.progress.setMessage("Buffering...");
++++++++this.progress.show();

++++}
}

@Override
protected+void+onPause()+{
++++//+TODO+Auto-generated+method+stub
++++super.onPause();
++++if+(mediaPlayer+!=+null)+{
++++++++mediaPlayer.reset();
++++++++mediaPlayer.release();
++++++++mediaPlayer+=+null;
++++}
}|code-block|syntax|javascript|1374219|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

simple Media Player with streaming example.For xml part you need one button with id button1 and two images in your drawable folder with name button_pause and button_play and please don't forget to add the internet permission in your manifest.

<pre><code>public class MainActivity extends Activity {
private Button btn;
/**
 * help to toggle between play and pause.
 */
private boolean playPause;
private MediaPlayer mediaPlayer;
/**
 * remain false till media is not completed, inside OnCompletionListener make it true.
 */
private boolean intialStage = true;


@Override
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 btn = (Button) findViewById(R.id.button1);
 mediaPlayer = new MediaPlayer();
 mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
 btn.setOnClickListener(pausePlay);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
 // Inflate the menu; this adds items to the action bar if it is present.
 getMenuInflater().inflate(R.menu.activity_main, menu);
 return true;
}

private OnClickListener pausePlay = new OnClickListener() {

 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
 // TODO Auto-generated method stub

 if (!playPause) {
 btn.setBackgroundResource(R.drawable.button_pause);
 if (intialStage)
 new Player()
 .execute("http://www.virginmegastore.me/Library/Music/CD_001214/Tracks/Track1.mp3");
 else {
 if (!mediaPlayer.isPlaying())
 mediaPlayer.start();
 }
 playPause = true;
 } else {
 btn.setBackgroundResource(R.drawable.button_play);
 if (mediaPlayer.isPlaying())
 mediaPlayer.pause();
 playPause = false;
 }
 }
};
/**
 * preparing mediaplayer will take sometime to buffer the content so prepare it inside the background thread and starting it on UI thread.
 * @author piyush
 *
 */

class Player extends AsyncTask&lt;String, Void, Boolean&gt; {
 private ProgressDialog progress;

 @Override
 protected Boolean doInBackground(String... params) {
 // TODO Auto-generated method stub
 Boolean prepared;
 try {

 mediaPlayer.setDataSource(params[0]);

 mediaPlayer.setOnCompletionListener(new OnCompletionListener() {

 @Override
 public void onCompletion(MediaPlayer mp) {
 // TODO Auto-generated method stub
 intialStage = true;
 playPause=false;
 btn.setBackgroundResource(R.drawable.button_play);
 mediaPlayer.stop();
 mediaPlayer.reset();
 }
 });
 mediaPlayer.prepare();
 prepared = true;
 } catch (IllegalArgumentException e) {
 // TODO Auto-generated catch block
 Log.d("IllegarArgument", e.getMessage());
 prepared = false;
 e.printStackTrace();
 } catch (SecurityException e) {
 // TODO Auto-generated catch block
 prepared = false;
 e.printStackTrace();
 } catch (IllegalStateException e) {
 // TODO Auto-generated catch block
 prepared = false;
 e.printStackTrace();
 } catch (IOException e) {
 // TODO Auto-generated catch block
 prepared = false;
 e.printStackTrace();
 }
 return prepared;
 }

 @Override
 protected void onPostExecute(Boolean result) {
 // TODO Auto-generated method stub
 super.onPostExecute(result);
 if (progress.isShowing()) {
 progress.cancel();
 }
 Log.d("Prepared", "//" + result);
 mediaPlayer.start();

 intialStage = false;
 }

 public Player() {
 progress = new ProgressDialog(MainActivity.this);
 }

 @Override
 protected void onPreExecute() {
 // TODO Auto-generated method stub
 super.onPreExecute();
 this.progress.setMessage("Buffering...");
 this.progress.show();

 }
}

@Override
protected void onPause() {
 // TODO Auto-generated method stub
 super.onPause();
 if (mediaPlayer != null) {
 mediaPlayer.reset();
 mediaPlayer.release();
 mediaPlayer = null;
 }
}
</code></pre>

blocks|key|1374226|text|使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374227|+mediaplayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
+mediaplayer.prepareAsync();
+mediaplayer.setOnPreparedListener(new+MediaPlayer.OnPreparedListener()+{
++++++@Override
++++++public+void+onPrepared(MediaPlayer+mp)+{
++++++++++mediaplayer.start();
++++++}
+});|code-block|syntax|javascript|1374228|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Use 

<pre><code> mediaplayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
 mediaplayer.prepareAsync();
 mediaplayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
 @Override
 public void onPrepared(MediaPlayer mp) {
 mediaplayer.start();
 }
 });
</code></pre>

I've been trying to stream mp3's over http using Android's built in MediaPlayer class. The documentation would suggest to me that this should be as easy as :

<pre><code>MediaPlayer mp = new MediaPlayer();
mp.setDataSource(URL_OF_FILE);
mp.prepare();
mp.start();
</code></pre>

However I am getting the following repeatedly. I have tried different URLs as well. Please don't tell me that streaming doesn't work on mp3's.

<pre><code>E/PlayerDriver( 31): Command PLAYER_SET_DATA_SOURCE completed with an error or info PVMFErrNotSupported
W/PlayerDriver( 31): PVMFInfoErrorHandlingComplete
E/MediaPlayer( 198): error (1, -4)
E/MediaPlayer( 198): start called in state 0
E/MediaPlayer( 198): error (-38, 0)
E/MediaPlayer( 198): Error (1,-4)
E/MediaPlayer( 198): Error (-38,0)
</code></pre>

Any help much appreciated, thanks
S

Streaming Audio from A URL in Android using MediaPlayer?

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Android

我一直在尝试使用安卓内置的MediaPlayer类在http上播放MP3。文档向我建议，这应该很简单：MediaPlayer mp = new MediaPlayer();mp.setDataSource(URL_OF_FILE);mp.prepare();mp.start();然而，我重复地得到了以下内容。我也尝试过...

问在安卓系统中使用MediaPlayer从网址下载音频流？
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