我正在尝试播放此网址中的音频:http://mtl2.liveatc.net/lbbg 这是我的代码:
public void setConnection(String url) {
String url = http://mtl2.liveatc.net/lbbg;
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
new Player().execute(url);
}
private class Player extends AsyncTask<String, Void, Void> {
@Override
protected Void doInBackground(String... strings) {
try {
mediaPlayer.setDataSource(strings[0]);
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.stop();
mediaPlayer.reset();
}
});
mediaPlayer.prepareAsync();
} catch (Exception e) {
Log.e("MyAudioStreamingApp", e.getMessage());
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener(){
@Override
public void onPrepared(MediaPlayer mp) {
progressBar.setVisibility(View.INVISIBLE);
mp.start();
}
});
}
@Override
protected void onPreExecute() {
super.onPreExecute();
progressBar.setVisibility(View.VISIBLE);
}
}
一切正常,但真的有很大的延迟。如果我在浏览器中打开此URL,则需要将近20秒才能开始流式传输,但是当我在应用程序中运行它时,最多需要5-7分钟。
UPD还添加我的日志:
07-24 01:12:52.820 25918-25961/com.example I/OpenGLRenderer: Initialized EGL, version 1.4
07-24 01:12:52.843 25918-25961/com.example E/HAL: hw_get_module_by_class: module name gralloc
07-24 01:12:52.843 25918-25961/com.example E/HAL: hw_get_module_by_class: module name gralloc
07-24 01:12:59.171 25918-25918/com.example E/ExtMediaPlayer-JNI: env->IsInstanceOf fails
07-24 01:12:59.171 25918-25918/com.example E/MediaPlayer-JNI: JNIMediaPlayerFactory: bIsQCMediaPlayerPresent 0
07-24 01:12:59.171 25918-25918/com.example E/ExtMediaPlayer-JNI: env->IsInstanceOf fails
07-24 01:12:59.171 25918-25918/com.example E/MediaPlayer-JNI: JNIMediaPlayerFactory: bIsQCMediaPlayerPresent 0
07-24 01:12:59.188 25918-25931/com.example D/MediaHTTPConnection: filterOutInternalHeaders: key=User-Agent, val= stagefright/1.2 (Linux;Android 6.0.1)
07-24 01:12:59.191 25918-26002/com.example D/MediaHTTPConnection: proxy null port 0
07-24 01:12:59.192 25918-26002/com.example I/DpmTcmClient: RegisterTcmMonitor from: com.android.okhttp.TcmIdleTimerMonitor
07-24 01:15:42.557 25918-25925/com.example W/art: Suspending all threads took: 31.418ms
07-24 01:17:48.107 25918-25918/com.example D/MediaPlayer: setSubtitleAnchor in MediaPlayer
UPD2:我的“解决方案”:我找不到解决这个问题的方法所以我决定使用下一个东西:我放置了小型WebView,我需要播放按钮,并收到完整的音频播放器加载并在10-15秒内播放此流。
答案 0 :(得分:0)
不使用任务,您可以简单地完成:
MediaPlayer mediaPlayer = new MediaPlayer();
mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
public boolean onError(MediaPlayer mp, int what, int extra) {
mp.reset();
return false;
}
});
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
mp.start();
}
});
try {
mediaPlayer.setDataSource("http://yoururl");
mediaPlayer.prepareAsync();
} catch (IllegalArgumentException e) {
} catch (IllegalStateException e) {
} catch (IOException e) {
}
尝试这种简单的方法并检查延迟是否仍然存在。
答案 1 :(得分:0)
检查您的线程优先级。
Thread.currentThread().getPriority();
根据我的经验,一些旧的(Android 5~6)设备(例如:LG ..)在准备或启动工作线程(如AsyncTask)时会出现这样的问题。在这种情况下,请将priority设置为更高或使用Main thread。就我而言,将prepareAsync移动到主线程。
<强>已更新强>
我测试了代码,发现优先级不是问题。我认为Android mediaPlayer不适合&#34;&#34;网址。我曾经选择ffmpeg或google / exoplayer进行流媒体项目。
响应标题
HTTP/1.1 200 OK
Server: nginx/1.12.1
Content-Type: audio/mpeg
Connection: close
icy-br: 16
ice-audio-info: ice-samplerate=11025;ice-bitrate=16;ice-channels=1
icy-br: 16
icy-description: LBBG Burgas, Bulgaria
icy-genre: ATC
icy-name: Burgas Tower, Approach
icy-private: 0
icy-pub: 1
icy-url: http://www.liveatc.net
...
媒体资讯
Input #0, mp3, from 'http://mtl2.liveatc.net/lbbg':
Duration: N/A, start: 0.000000, bitrate: 16 kb/s
Stream #0.0: Audio: mp3, 11025 Hz, mono, s16, 16 kb/s