Do odtwarzania muzyki online uzyskuję wyjątek w tle w tle. Nie mogę usunąć problemu.Nie można utworzyć odtwarzacza multimedialnego (przy użyciu adresu URL)
01-08 09:42:05.199: E/MediaPlayer(16257): Unable to to create media player
01-08 09:42:05.209: W/System.err(16257): java.io.IOException: setDataSource failed.: status=0x80000000
01-08 09:42:05.229: W/System.err(16257): at android.media.MediaPlayer._setDataSource(Native Method)
01-08 09:42:05.229: W/System.err(16257): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1000)
01-08 09:42:05.229: W/System.err(16257): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:960)
01-08 09:42:05.229: W/System.err(16257): at com.example.audioplayer.MainActivity$Player.doInBackground(MainActivity.java:89)
01-08 09:42:05.229: W/System.err(16257): at com.example.audioplayer.MainActivity$Player.doInBackground(MainActivity.java:1)
01-08 09:42:05.229: W/System.err(16257): at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-08 09:42:05.229: W/System.err(16257): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
01-08 09:42:05.229: W/System.err(16257): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
01-08 09:42:05.229: W/System.err(16257): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
01-08 09:42:05.239: W/System.err(16257): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
01-08 09:42:05.239: W/System.err(16257): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
01-08 09:42:05.239: W/System.err(16257): at java.lang.Thread.run(Thread.java:856)
01-08 09:42:05.389: D/Prepared(16257): //false
01-08 09:42:05.389: E/MediaPlayer(16257): start called in state 1
01-08 09:42:05.389: E/MediaPlayer(16257): error (-38, 0)
01-08 09:42:05.449: E/MediaPlayer(16257): Error (-38,0)
Jest to kod:
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.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]);//line 89
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;
}
}
}
Link jest poprawny. Wspomniałem o wyjątku wygenerowanym w linii 89. Proszę zobaczyć, co tam było nie tak.
góry dzięki ...
Dzięki, I zapomnieć o pozwolenie internetowego, mój kod działa teraz absolutnie w porządku, ale dlaczego zostały uproszczone kod? –
Uprościliśmy to, ponieważ nie potrzebujesz własnego AsyncTask, readyAsync będzie obsługiwać ładowanie w tle. Resztę stanowili słuchacze kliknięć i inne metody, których nie potrzebowałem, aby pokazać, jak to działa. –
Dzięki, każdy darmowy serwer, wiesz gdzie mogę wgrać mój mp3, usługa taka jak ta http://www.virginmegastore.me/Library/Music/CD_001214/Tracks/Track1.mp3, gdzie mogę uzyskać adres URL mojego mp3 –