我想在我的Android应用中播放实时HTTP流，因此我将Windows Media Encoder 9安装在同一LAN上的另一台PC上，并用它来创建实时HTTP音频流。
实时HTTP流是可以的：我测试了它，它可以在PC上由Windows Media Player或VLC播放，并且可以在我的手机上通过VLC for Android播放。
所以，在我的Android应用程序中，我编写了这段代码：
private MediaPlayer player = null;
@Override
public void onCreate(Bundle savedInstanceState) {
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
.detectDiskReads()
.detectDiskWrites()
.detectNetwork() // or .detectAll() for all detectable problems
.penaltyLog()
.build());
StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
.detectLeakedSqlLiteObjects()
//.detectLeakedClosableObjects()
.penaltyLog()
.penaltyDeath()
.build());
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnPlay = (Button)findViewById(R.id.play);
address = (TextView)findViewById(R.id.address);
btnPlay.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
play();
}
});
}
private void play()
{
String serverIp;
serverIp = address.getText().toString(); // get the uri address, for example http://xxx.xxx.xxx.xxx:2340
if (player == null)
{
player = new MediaPlayer();
}
else
{
player.stop();
player.reset();
}
try {
Log.v("", "Init a new MediaPlayer");
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
Log.v("", "Set the stream type to STREAM_MUSIC");
player.setDataSource(this, Uri.parse(serverIp));
Log.v("", "Set the source is " + serverIp);
player.setOnBufferingUpdateListener(this);
player.setOnPreparedListener(this);
player.setOnErrorListener(this);
player.prepareAsync();
Log.v("", "After prepareAsync");
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
Log.v("IllegalArgumentException", e.toString());
} catch (SecurityException e) {
// TODO Auto-generated catch block
Log.v("SecurityException", e.toString());
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
Log.v("IllegalStateException", e.toString());
} catch (IOException e) {
// TODO Auto-generated catch block
Log.v("IOException", e.toString());
} catch (Exception e) {
Log.v("Exception",e.toString());
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
try {
Log.v("onPrepared", "After prepareAsync");
mp.start();
}
catch (Exception e) {
Log.v("play", e.toString());
}
}
@Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
// TODO Auto-generated method stub
Log.v("onBufferingUpdate", "Buffering Update");
}
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
// TODO Auto-generated method stub
Log.v("MediaPlayer onError", "what=" + what + " extra=" + extra);
return true;
}
但它没有用。当我点击播放按钮时，没有任何反应。但是，如果我输入我在互联网上找到的其他一些网址（例如http://www.example.com/song.mp3），它就有效。
那么有人可以帮助我吗？日志信息如下。我的手机是HTC s710e，我的Android版本是4.0.4。
11-20 22:28:14.137: V/(580): Init a new MediaPlayer
11-20 22:28:14.137: V/(580): Set the stream type tp STREAM_MUSIC
11-20 22:28:14.147: D/MediaPlayer(580): Couldn't open file on client side, trying server side
11-20 22:28:14.178: E/Trace(39): error opening trace file: No such file or directory (2)
11-20 22:28:14.178: V/(580): After prepareAsync
11-20 22:28:14.297: V/ChromiumHTTPDataSource(39): connect on behalf of uid 10044
11-20 22:28:14.339: I/qtaguid(39): Tagging socket 27 with tag 3f500000000(1013) for uid 10044 failed errno=-2
11-20 22:28:14.629: I/ChromiumHTTPDataSourceSupport(39): Server responded with http status 400
11-20 22:28:14.648: I/qtaguid(39): Untagging socket 27 failed errno=-2
11-20 22:28:14.657: I/AwesomePlayer(39): mConnectingDataSource->connect() returned -1004
11-20 22:28:14.657: E/MediaPlayer(580): error (1, -1004)
11-20 22:28:14.667: E/MediaPlayer(580): Error (1,-1004)
11-20 22:28:14.667: V/MediaPlayer onError(580): what=1 extra=-1004
答案 0 :(得分：1)
你可以在android 3.0和3.0 +版本上玩HLS，旧版本不支持HLS。下面的代码可以在3.0 +版本上运行。要播放视频所有Android版本，你必须使用rtsp流媒体或http prograssive下载。
玩家类
import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class VideoPlayerActivity extends Activity implements
OnBufferingUpdateListener, OnCompletionListener,
OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback {
private static final String TAG = "MediaPlayerDemo";
private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private SurfaceView mPreview;
private SurfaceHolder holder;
private String path;
private Bundle extras;
private static final String MEDIA = "media";
private static final int STREAM_VIDEO = 5;
private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
/**
*
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
mPreview = (SurfaceView) findViewById(R.id.VideoView);
holder = mPreview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
extras = getIntent().getExtras();
}
private void playVideo(Integer Media) {
doCleanUp();
try {
path = "http://www.pocketjourney.com/downloads/pj/video/famous.3gp";
// Create a new media player and set the listeners
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(path);
mMediaPlayer.setDisplay(holder);
mMediaPlayer.prepare();
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.setOnVideoSizeChangedListener(this);
//mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
}
}
public void onBufferingUpdate(MediaPlayer arg0, int percent) {
Log.d(TAG, "onBufferingUpdate percent:" + percent);
}
public void onCompletion(MediaPlayer arg0) {
Log.d(TAG, "onCompletion called");
}
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
Log.v(TAG, "onVideoSizeChanged called");
if (width == 0 || height == 0) {
Log.e(TAG, "invalid video width(" + width + ") or height(" + height + ")");
return;
}
mIsVideoSizeKnown = true;
mVideoWidth = width;
mVideoHeight = height;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void onPrepared(MediaPlayer mediaplayer) {
Log.d(TAG, "onPrepared called");
mIsVideoReadyToBePlayed = true;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
Log.d(TAG, "surfaceChanged called");
}
public void surfaceDestroyed(SurfaceHolder surfaceholder) {
Log.d(TAG, "surfaceDestroyed called");
}
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "surfaceCreated called");
playVideo(STREAM_VIDEO);
}
@Override
protected void onPause() {
super.onPause();
releaseMediaPlayer();
doCleanUp();
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
doCleanUp();
}
private void releaseMediaPlayer() {
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private void doCleanUp() {
mVideoWidth = 0;
mVideoHeight = 0;
mIsVideoReadyToBePlayed = false;
mIsVideoSizeKnown = false;
}
private void startVideoPlayback() {
Log.v(TAG, "startVideoPlayback");
holder.setFixedSize(mVideoWidth, mVideoHeight);
mMediaPlayer.start();
}
}
主要XML
<VideoView
android:id="@+id/VideoView"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_weight="1"/>
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" android:layout_weight="1" android:background="#aaaaaa">
</LinearLayout>
</LinearLayout>
您必须添加到您的清单互联网权限
uses-permission android:name="android.permission.INTERNET" />