Mehrere Audiospuren in derselben Aktivität

Question

Ich erstelle eine Audiowiedergabeanwendung. Ich habe gerade zwei Tracks hinzugefügt, aber letztendlich muss ich noch viel mehr hinzufügen ... Ich habe zur Zeit zwei verschiedene Mediaplayer erstellt, um beide Tracks laufen zu lassen, allerdings wird die Anzahl der Tracks mit dieser Prozedur zu Problemen führen Mangel an Leistung!

Gibt es einen Weg, wie ich das besser und generischer codieren kann?

Hier ist der Java-Code

public class ChantsFragment extends Fragment { 

    TextView text1, text2 
    ImageButton play1, play2, pause1, pause2, repeatoff1, repeatoff2, repeaton1, repeaton2, stop1, stop2; 
    MediaPlayer mediaPlayer1, mediaPlayer2; 
    Toast on, off; 

    public ChantsFragment() { 

    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.fragment_chants, container, false); 


     play1 = (ImageButton) view.findViewById(R.id.play1); 
     play2 = (ImageButton) view.findViewById(R.id.play2); 
     pause1 = (ImageButton) view.findViewById(R.id.pause1); 
     pause2 = (ImageButton) view.findViewById(R.id.pause2); 
     repeatoff1 = (ImageButton) view.findViewById(R.id.repeatoff1); 
     repeatoff2 = (ImageButton) view.findViewById(R.id.repeatoff2); 
     repeaton1 = (ImageButton) view.findViewById(R.id.repeaton1); 
     repeaton2 = (ImageButton) view.findViewById(R.id.repeaton2); 
     stop1 = (ImageButton) view.findViewById(R.id.stop1); 
     stop2 = (ImageButton) view.findViewById(R.id.stop2); 

     mediaPlayer1 = MediaPlayer.create(getActivity(), R.raw.audio1); 
     mediaPlayer2 = MediaPlayer.create(getActivity(), R.raw.audio2); 

     on = Toast.makeText(getActivity(), "The chant will repeat itself", Toast.LENGTH_LONG); 
     off = Toast.makeText(getActivity(), "The chant will no longer repeat itself", Toast.LENGTH_LONG); 

     //Track 1 

     text1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       if (mediaPlayer1 != null && mediaPlayer1.isPlaying()) { 
        text1.setClickable(false); 
       } 

       if (mediaPlayer2 != null && mediaPlayer2.isPlaying()) { 
        mediaPlayer2.stop(); 
        mediaPlayer2.release(); 
        mediaPlayer2 = null; 
        play2.setVisibility(View.GONE); 
        pause2.setVisibility(View.GONE); 
        repeatoff2.setVisibility(View.GONE); 
        repeaton2.setVisibility(View.GONE); 
        stop2.setVisibility(View.GONE); 
       } 

       if (mediaPlayer1 == null) { 
        mediaPlayer1 = MediaPlayer.create(getActivity(), R.raw.audio1); 
       } else { 
        text1.setClickable(true); 
        mediaPlayer1.start(); 
        play1.setVisibility(View.GONE); 
        pause1.setVisibility(View.VISIBLE); 
        repeatoff1.setVisibility(View.VISIBLE); 
        stop1.setVisibility(View.VISIBLE); 
       } 

       mediaPlayer1.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { 
        @Override 
        public void onCompletion(MediaPlayer mp) { 
         play1.setVisibility(View.GONE); 
         pause1.setVisibility(View.GONE); 
         repeatoff1.setVisibility(View.GONE); 
         repeaton1.setVisibility(View.GONE); 
         stop1.setVisibility(View.GONE); 
        } 
       }); 
      } 
     }); 


     play1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       play1.setVisibility(View.GONE); 
       pause1.setVisibility(View.VISIBLE); 
       mediaPlayer1.start(); 
      } 
     }); 

     pause1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       play1.setVisibility(View.VISIBLE); 
       pause1.setVisibility(View.GONE); 
       mediaPlayer1.pause(); 
      } 
     }); 

     repeatoff1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       mediaPlayer1.setLooping(true); 
       repeatoff1.setVisibility(View.GONE); 
       repeaton1.setVisibility(View.VISIBLE); 
       on.show(); 
       off.cancel(); 
      } 
     }); 

     repeaton1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       mediaPlayer1.setLooping(false); 
       repeaton1.setVisibility(View.GONE); 
       repeatoff1.setVisibility(View.VISIBLE); 
       off.show(); 
       on.cancel(); 
      } 
     }); 

     stop1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       mediaPlayer1.stop(); 
       mediaPlayer1 = null; 
       text1.setClickable(true); 
       play1.setVisibility(View.GONE); 
       pause1.setVisibility(View.GONE); 
       repeatoff1.setVisibility(View.GONE); 
       repeaton1.setVisibility(View.GONE); 
       stop1.setVisibility(View.GONE); 
      } 
     }); 

     //Track 2 

     text2.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       if (mediaPlayer2 != null && mediaPlayer2.isPlaying()) { 
        text2.setClickable(false); 
       } 

       if (mediaPlayer1 != null && mediaPlayer1.isPlaying()) { 
        mediaPlayer1.stop(); 
        mediaPlayer1.release(); 
        mediaPlayer1 = null; 
        play1.setVisibility(View.GONE); 
        pause1.setVisibility(View.GONE); 
        repeatoff1.setVisibility(View.GONE); 
        repeaton1.setVisibility(View.GONE); 
        stop1.setVisibility(View.GONE); 
       } 

       if (mediaPlayer2 == null) { 
        mediaPlayer2 = MediaPlayer.create(getActivity(), R.raw.audio2); 
       } else { 
        text2.setClickable(true); 
        mediaPlayer2.start(); 
        play2.setVisibility(View.GONE); 
        pause2.setVisibility(View.VISIBLE); 
        repeatoff2.setVisibility(View.VISIBLE); 
        stop2.setVisibility(View.VISIBLE); 
       } 

       mediaPlayer2.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { 
        @Override 
        public void onCompletion(MediaPlayer mp) { 
         play2.setVisibility(View.GONE); 
         pause2.setVisibility(View.GONE); 
         repeatoff2.setVisibility(View.GONE); 
         repeaton2.setVisibility(View.GONE); 
         stop2.setVisibility(View.GONE); 
        } 
       }); 
      } 
     }); 

     play2.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       play2.setVisibility(View.GONE); 
       pause2.setVisibility(View.VISIBLE); 
       mediaPlayer2.start(); 
      } 
     }); 

     pause2.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       play2.setVisibility(View.VISIBLE); 
       pause2.setVisibility(View.GONE); 
       mediaPlayer2.pause(); 
      } 
     }); 

     repeatoff2.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       mediaPlayer2.setLooping(true); 
       repeatoff2.setVisibility(View.GONE); 
       repeaton2.setVisibility(View.VISIBLE); 
       on.show(); 
       off.cancel(); 
      } 
     }); 

     repeaton2.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       mediaPlayer2.setLooping(false); 
       repeaton2.setVisibility(View.GONE); 
       repeatoff2.setVisibility(View.VISIBLE); 
       off.show(); 
       on.cancel(); 
      } 
     }); 

     stop2.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       mediaPlayer2.stop(); 
       mediaPlayer2 = null; 
       text2.setClickable(true); 
       play2.setVisibility(View.GONE); 
       pause2.setVisibility(View.GONE); 
       repeatoff2.setVisibility(View.GONE); 
       repeaton2.setVisibility(View.GONE); 
       stop2.setVisibility(View.GONE); 
      } 
     }); 

     return view; 
    } 

bearbeiten

ich derzeit rund 10 Titel über das Hinzufügen von unten auf die Anwendung auf Null gestellt haben. Ich möchte, dass die Wiedergabe auf dem aktuellen Titel stoppt (falls abgespielt wird), sobald ein anderer Titel ausgewählt wird. Wenn Sie den Media Player verwenden, um das gleiche zu tun, müssen Sie separat prüfen, ob 9 Mediaplayer abgespielt werden! (Es sei denn natürlich gibt es eine andere Möglichkeit, dies zu tun, die ich völlig verpasst habe)

Answer 1

Nun, zum Abspielen mehrerer Audio-Dateien auf einmal scheint SoundPool Ihre beste Wahl vor allem, weil es viel leichter und Sie können die Anzahl steuern von Bächen. Sie können eine neue SoundPool Instanz erstellen, wie:

SoundPool soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 100); // 10 = maxStreams, 100 = quality 

Sie dann verschiedene Töne hinein, als Laden beginnen:

int soundId1 = soundPool.load(context, R.raw.audio1, 1); 
int soundId2 = soundPool.load(context, R.raw.audio2, 1); 
... 

Sie die Wiedergabe wie steuern:

int idBeingPlayed = soundPool.play (soundID, 1, 1, 1, -1, 1); // volume params, returns the streamId 

Andere Kontrollen:

soundPool.pause(streamID); 
soundPool.resume(streamID); 

Für weitere Informationen besuchen Sie die . Hoffe das hilft!