MediaPlayer verlangsamen listview

Question

Ich habe eine ListView, die Audioaufnahmen auflistet. Wenn ich auf eines klicke, um es abzuspielen, geht es aus dem Internet und ruft das Audio ab und spielt es ab. Wenn das Scrollen abgespielt wird, wird es blockiert.

Sobald die MediaPlayer gestoppt hat, kann ich wie normal scrollen. Dies ist kein Thread-Problem, da die MediaPlayer in einem anderen Thread wiedergegeben wird.

Dies ist der Mediaplayer AsyncTask:

private class PlayAudio extends AsyncTask<String, Integer, String> { 
    @Override 
    protected String doInBackground(String... params) { 
     nowPlaying = true; 

     player.setOnErrorListener(new MediaPlayer.OnErrorListener() { 
      @Override 
      public boolean onError(MediaPlayer mp, int what, int extra) { 

       if(isAdded()) { 
        stopAudio(); 
       } 

       PvmUtils.longToast(context, getString(R.string.error_load_msg)); 
       return false; 
      } 
     }); 

     player.setOnPreparedListener(new MediaPlayer.OnPreparedListener() { 
      @Override 
      public void onPrepared(MediaPlayer mp) { 
       setButtonColors(2); 
      } 
     }); 

     player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { 
      @Override 
      public void onCompletion(MediaPlayer mp) { 
       stopAudio(); 

       sendPostMessageRead(new Callbacks.SendPostMessageReadCallback() { 
        @Override 
        public void sendPostMessageReadCallback(boolean gotMessageReadResponse) { 
         if (gotMessageReadResponse) { 
          MessageLog message = log.get(listPosition); 
          message.setMessageStatus("read"); 

          if (message.isReply()) { 
           currentMetaTextView.setText(""); 
           MyFcmListenerService.newMessages--; 
           ShortcutBadger.applyCount(context, MyFcmListenerService.newMessages); 
          } 

         } else { 
          Log.d(LOG_TAG, "sendPostMessageReadCallback returned false, error may have occurred"); 
         } 
        } 
       }); 
      } 
     }); 

     player.setAudioStreamType(AudioManager.STREAM_MUSIC); 


     try { 
      //Uri uri = Uri.parse(Keys.getpvmURL() + "android/retrieveMessage?messageId=" + params[0]); 
      //player.setDataSource(params[0].replaceFirst("https","http")); 
      Uri uri = Uri.parse(params[0]); 
      Map<String, String> headers = new HashMap<>(); 
      headers.put("authorisation", encryption.getID().toString()); 
      player.setDataSource(context, uri, headers); 

     } catch (IOException e) { 
      e.printStackTrace(); 
      stopAudio(); 
     } try { 
      player.prepare(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
      stopAudio(); 
     } 

     player.start(); 
     return null; 
    } 
} 

Dies ist clicklistener für das Listenelement:

ListAdapter newAdapter = new ListAdapter(getActivity()); 

    if (this.log == null) { 
     list.setAdapter(populateAdapter(newAdapter,new ArrayList<MessageLog>())); 
    } else { 
     list.setAdapter(populateAdapter(newAdapter,log)); 
    } 


    list.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
      Log.d(LOG_TAG, Integer.toString(position)); 

      if (log != null && position < log.size()) { 
       if (!nowPlaying && log.get(position).getUrl() != null) { 
        try { 
         stopAudio(); 
         setButtonColors(0, currentPlaying); 

         // Show the play controls. 
         currentPlaying = position; 
         nowPlaying = true; 
         player = new MediaPlayer(); 
         player.setAudioStreamType(AudioManager.STREAM_VOICE_CALL); 
         listPosition = position; 
         currentButton = view; 
         Log.d(LOG_TAG, log.get(position).getUrl()); 
         /* 
         MessagePlaybackDialogFragment playFrag = MessagePlaybackDialogFragment.newInstance(log.get(listPosition), 
           new Callbacks.OnPlaybackFinishedListener() { 
          @Override 
          public void onPlaybackDone() { 
           // TODO set as not new 
          } 
         }); 
         playFrag.show(getFragmentManager(), "playFrag");*/ 

//       MessagePlaybackDialogFragment playFrag = MessagePlaybackDialogFragment.newInstance(log.get(listPosition)); 
//       playFrag.show(getFragmentManager(), "playFrag"); 

         currentMetaTextView = (TextView) view.findViewById(R.id.voiceMessageMetaText); 
         currentPlayPauseImageView = (ImageView) view.findViewById(R.id.voiceMessagePlayPauseImage); 
         currentMessageBackground = (RelativeLayout) view.findViewById(R.id.voiceMessageRectangleBackground); 

         setButtonColors(1); 
         currentAudio = new PlayAudio().execute(log.get(listPosition).getUrl()); 
        } catch (Exception e) { 
         stopAudio(); 
         e.printStackTrace(); 
        } 
       } else if (position == listPosition){ 
        stopAudio(); 
       } else if (nowPlaying){ 
        stopAudio(); 

        currentPlaying = position; 
        player = new MediaPlayer(); 
        player.setAudioStreamType(AudioManager.STREAM_VOICE_CALL); 
        listPosition = position; 
        currentButton = view; 
        Log.d(LOG_TAG, log.get(position).getUrl()); 
        currentMetaTextView = (TextView) view.findViewById(R.id.voiceMessageMetaText); 
        currentPlayPauseImageView = (ImageView) view.findViewById(R.id.voiceMessagePlayPauseImage); 
        currentMessageBackground = (RelativeLayout) view.findViewById(R.id.voiceMessageRectangleBackground); 

        setButtonColors(0, currentPlaying); 
        setButtonColors(1); 

        currentAudio = new PlayAudio().execute(log.get(listPosition).getUrl()); 
       } 
      } 
     } 
    }); 

Answer 1

prepareAsync stattdessen versuchen, dies ist mein Code ...

mp.setAudioStreamType(AudioManager.STREAM_VOICE_CALL); 
        mp.setDataSource(a.getUrl()); 
        mp.prepareAsync(); 
        mp.setOnPreparedListener(new MediaPlayer.OnPreparedListener() { 
         @Override 
         public void onPrepared(MediaPlayer mp) { 
          activityList.get(position).setDuration(mp.getDuration()/1000); 
          holder.playButton.clearAnimation(); 
          mp.start(); 
         } 
        });