android-studio - 音频播放器如何在回收站视图中播放音频？

Question

我的音频播放器无法在回收站视图中播放音频请帮帮我我从上周卡住了我想在回收站视图中播放音频

标签： android-studioandroid-mediaplayeraudio-playerandroid-audiomanagerandroid-audiorecord

Answer 1

这是我的 recyclerView 适配器，你必须把你的 arraylist 放在这个适配器中

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.AudioItemsViewHolder> {

static MediaPlayer mediaPlayer;
Activity activity;


private final ArrayList<GroupItems> audioItems;//change it() to your items
private int currentPlayingPosition;
private final SeekBarUpdater seekBarUpdater;
private AudioItemsViewHolder playingHolder;
this.activity = activity;

@Override
public AudioItemsViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
  //put YourItemsLayout;
    return new AudioItemsViewHolder(LayoutInflater.from(parent.getContext()).inflate(YourItemsLayout, parent, false));
}

@Override
public void onBindViewHolder(AudioItemsViewHolder holder, int position) {
if (position == currentPlayingPosition) {
        playingHolder = holder;
        updatePlayingView();
    } else {
        updateNonPlayingView(holder);
    }
}
   private void updateNonPlayingView(AudioItemsViewHolder holder) {
    holder.sbProgress.removeCallbacks(seekBarUpdater);
    holder.sbProgress.setEnabled(false);
    holder.sbProgress.setProgress(0);
    holder.ivPlayPause.setImageResource(R.drawable.ic_baseline_play_arrow_24);
}

private void updatePlayingView() {
    playingHolder.sbProgress.setMax(mediaPlayer.getDuration());
    playingHolder.sbProgress.setProgress(mediaPlayer.getCurrentPosition());
    playingHolder.sbProgress.setEnabled(true);
    if (mediaPlayer.isPlaying()) {
        playingHolder.sbProgress.postDelayed(seekBarUpdater, 100);
        playingHolder.ivPlayPause.setImageResource(R.drawable.ic_pause);
    } else {
        playingHolder.sbProgress.removeCallbacks(seekBarUpdater);
        playingHolder.ivPlayPause.setImageResource(R.drawable.ic_baseline_play_arrow_24);
    }
}
  private class SeekBarUpdater implements Runnable {
    @Override
    public void run() {
        if (null != playingHolder && null != mediaPlayer) {
            playingHolder.sbProgress.setProgress(mediaPlayer.getCurrentPosition());
            playingHolder.sbProgress.postDelayed(this, 100);
        }
    }
}

@Override
public int getItemCount() {
    return audioItems.size();
}
 
    class AudioItemsViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, SeekBar.OnSeekBarChangeListener {
    SeekBar sbProgress;
    ImageView ivPlayPause;
    AudioItemsViewHolder(View itemView) {
        super(itemView);
     ivPlayPause = itemView.findViewById(R.id.sound_btn);
        ivPlayPause.setOnClickListener(this);
        sbProgress = itemView.findViewById(R.id.seekBar);
        sbProgress.setOnSeekBarChangeListener(this);
    }
    @Override
    public void onClick(View v) {


        switch (v.getId()) {
            case R.id.seekBar:
                break;

            case R.id.sound_btn: {
                if (getAdapterPosition() == currentPlayingPosition) {
                    if (mediaPlayer != null && mediaPlayer.isPlaying()) {
                        mediaPlayer.pause();
                    } else {
                        if (mediaPlayer != null)
                            mediaPlayer.start();
                    }
                } else {
                    currentPlayingPosition = getAdapterPosition();
                    if (mediaPlayer != null) {
                        if (null != playingHolder) {
                            updateNonPlayingView(playingHolder);
                        }
                        mediaPlayer.release();
                    }
                    playingHolder = this;



                   
                        PlaySound(YOUR AUDIO FILE);//put your audio file


                }
                if (mediaPlayer != null)
                    updatePlayingView();
            }
            break;
    }


    }


     @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        if (fromUser) {
            mediaPlayer.seekTo(progress);
        }
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
    }
}
 private void PlaySound(File filesound) {

    mediaPlayer = MediaPlayer.create(activity, Uri.parse(String.valueOf(filesound)));

    mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mp) {
            releaseMediaPlayer();
        }
    });
    mediaPlayer.start();
}
    private void releaseMediaPlayer() {
    if (null != playingHolder) {
        updateNonPlayingView(playingHolder);
    }
    if (outputFile.exists())
        outputFile.delete();

    mediaPlayer.release();
    mediaPlayer = null;
    currentPlayingPosition = -1;
}
}

我的输出：