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मुझे निम्न कोड में कोई समस्या है। मैंने अपने MediaController पर setPrevNextListener को आमंत्रित किया है और पिछले और अगले दोनों के लिए दो ऑनक्लिकलिस्टर्स को परिभाषित किया है। जब मैं एक ट्रैक आगे जाने के बजाय अगला बटन क्लिक करता हूं तो मैं दो ट्रैक आगे जाता हूं। ऐसा लगता है कि इस प्रक्रिया के कारण किसी भी तरह से कॉल किया जा रहा है। क्या MediaPlayer.reset() पर लागू होता है? मैंने लॉगकैट आउटपुट और मेरा कोड शामिल किया है। अगर मैं कुछ गलत कर रहा हूं तो मुझे बताएं। अग्रिम में धन्यवाद।Android MediaPlayer.reset() पर आक्रमण कर रहा है पूर्ण
Logcat:
02-24 00:36:34.826: D/MP(6675): Next Button Clicked, index was: 0
02-24 00:36:34.837: D/MP(6675): About to call Reset()
02-24 00:36:34.906: D/MP(6675): Inside setUpPlayer
02-24 00:36:34.917: D/MP(6675): Called setDataSource with index: 1
02-24 00:36:34.917: D/MP(6675): Leaving setUpPlayer
02-24 00:36:34.917: D/MP(6675): About to call prepareAsync()
02-24 00:36:34.937: D/MP(6675): Leaving next button
02-24 00:36:35.226: E/MediaPlayer(6675): Attempt to call getDuration without a valid mediaplayer
02-24 00:36:35.226: E/MediaPlayer(6675): error (-38, 0)
02-24 00:36:35.276: E/MediaPlayer(6675): Error (-38,0)
02-24 00:36:35.287: D/MP(6675): Inside onCompletion
02-24 00:36:35.337: D/MP(6675): About to call Reset()
02-24 00:36:35.347: D/MP(6675): Inside setUpPlayer
02-24 00:36:35.356: D/MP(6675): Called setDataSource with index: 2
02-24 00:36:35.356: D/MP(6675): Leaving setUpPlayer
02-24 00:36:35.356: D/MP(6675): About to call prepareAsync()
02-24 00:36:35.377: D/MP(6675): Leaving onCompletion
02-24 00:36:36.517: D/MP(6675): Inside onPrepared, index is: 2
02-24 00:36:36.577: D/MP(6675): Leaving onPrepared
कोड:
public class MusicPlayerActivity extends Activity implements OnPreparedListener, OnCompletionListener, MediaController.MediaPlayerControl {
private MediaPlayer mp;
private MediaController mc;
private SonarDatabase db;
private SubsonicAPIConnector sonic;
ArrayList<String> songs;
int index = 0;
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.music_player);
// Get params from intent
Intent i = getIntent();
String albumId = i.getStringExtra("albumId");
String artistId = i.getStringExtra("artistId");
String albumName = i.getStringExtra("albumName");
String songName = i.getStringExtra("songName");
String songId = i.getStringExtra("songId");
String coverArt = "al-"+albumId+".jpeg";
String duration = i.getStringExtra("duration");
Log.d("MP", "results: albumName:" + albumName + ", songName: " + songName + ", songId: "
+ songId + ", duration: " + duration + ", coverArt: " + coverArt + ", artistId: "
+ artistId + ", albumId: " + albumId);
db = new SonarDatabase(getApplicationContext());
sonic = new SubsonicAPIConnector(db.getURL(), db.getUsername(), db.getPassword());
String artistName = db.getArtistNameById(artistId);
setTitle("Now Playing");
songs = db.getSongListForAlbum(albumId);
index = songs.indexOf(songId);
Log.d("MP", "songid: " + songId + ", index: " + index);
// Update text views with song information
TextView txtArtist = (TextView) findViewById(R.id.txtArtistName);
txtArtist.setText(artistName);
TextView txtAlbum = (TextView) findViewById(R.id.txtAlbumName);
txtAlbum.setText(albumName);
TextView txtSong = (TextView) findViewById(R.id.txtSongName);
txtSong.setText(songName);
// Show the album art
File img = new File(this.getFilesDir()+"/covers/"+coverArt);
if(img.exists()) {
Log.d("MP", "Found image at: " + img.toString());
ImageView imgView = (ImageView) findViewById(R.id.cover_art);
imgView.setImageBitmap(BitmapFactory.decodeFile(img.getPath()));
} else {
Log.d("MP", "Couldn't find image: " + img.toString());
}
// Create the media player and controller
mp = new MediaPlayer();
mp.setOnPreparedListener(this);
mp.setOnCompletionListener(this);
mc = new NonHidingMediaController(this);
mc.setPrevNextListeners(new View.OnClickListener() {
@Override
public void onClick(View v) {
// next button clicked
Log.d("MP", "Next Button Clicked, index was: " + index);
playNextTrack();
Log.d("MP", "Leaving next button");
}
}, new View.OnClickListener() {
@Override
public void onClick(View v) {
// previous button clicked
Log.d("MP", "Previous button clicked, index was: " + index);
if(mp.isPlaying() && mp.getCurrentPosition() < 2000 && index != 0) {
Log.d("MP", "Start the prior song.");
playPreviousTrack();
} else {
Log.d("MP", "Restart this song.");
restartCurrentTrack();
}
Log.d("MP", "Leaving previous button");
}
});
mc.setMediaPlayer(this);
setUpPlayer();
Log.d("MP", "About to call prepareAsync()");
mp.prepareAsync();
}
@Override
public void onCompletion(MediaPlayer mp) {
Log.d("MP", "Inside onCompletion");
//TODO add code for scrobbling here.
playNextTrack();
Log.d("MP", "Leaving onCompletion");
}
private void playNextTrack() {
index++;
TextView txtSong = (TextView) findViewById(R.id.txtSongName);
txtSong.setText(db.getSongNameById(songs.get(index)));
Log.d("MP", "About to call Reset()");
mp.reset();
setUpPlayer();
Log.d("MP", "About to call prepareAsync()");
mp.prepareAsync();
}
private void playPreviousTrack() {
index--;
TextView txtSong = (TextView) findViewById(R.id.txtSongName);
txtSong.setText(db.getSongNameById(songs.get(index)));
Log.d("MP", "About to call Reset()");
mp.reset();
setUpPlayer();
Log.d("MP", "About to call prepareAsync()");
mp.prepareAsync();
}
private void restartCurrentTrack() {
mp.seekTo(0);
}
public void onPrepared(MediaPlayer mp) {
Log.d("MP", "Inside onPrepared, index is: " + index);
mc.setMediaPlayer(this);
mc.setAnchorView(findViewById(R.id.music_player_view));
mp.start();
handler.post(new Runnable() {
public void run() {
mc.setEnabled(true);
mc.show();
}
});
Log.d("MP", "Leaving onPrepared");
}
@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_music_player, menu);
return true;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
Log.d("MP", "OnTouchEvent called");
mc.show();
return false;
}
private void setUpPlayer() {
Log.d("MP", "Inside setUpPlayer");
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mp.setDataSource(sonic.streamString("&id=" + songs.get(index)));
Log.d("MP", "Called setDataSource with index: " + index);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.d("MP", "Leaving setUpPlayer");
}
@Override
protected void onStop() {
super.onStop();
mc.hide();
mp.stop();
mp.release();
}
public void start() {
mp.start();
}
public void pause() {
mp.pause();
}
public int getDuration() {
return mp.getDuration();
}
public int getCurrentPosition() {
return mp.getCurrentPosition();
}
public void seekTo(int i) {
mp.seekTo(i);
}
public boolean isPlaying() {
return mp.isPlaying();
}
public int getBufferPercentage() {
return 0;
}
public boolean canPause() {
return true;
}
public boolean canSeekBackward() {
return true;
}
public boolean canSeekForward() {
return true;
}
public class NonHidingMediaController extends MediaController {
public NonHidingMediaController(Context context, AttributeSet attrs) {
super(context, attrs);
}
public NonHidingMediaController(Context context, boolean useFastForward) {
super(context, useFastForward);
}
public NonHidingMediaController(Context context) {
super(context);
}
@Override
public void show(int timeout) {
super.show(0);
}
}
}
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