Android Recyclerview MediaPlayer 上一个Item声音停止，点击新一个后释放

Question

在我的应用程序中，我有 recyclerview 项目，当我单击它时，每个项目都会播放声音。问题是当我点击几个项目时，它们都会同时播放声音直到完成。假设我点击了 10 个项目，所有 10 个同时播放声音，一段时间后应用程序崩溃了，我得到了这个错误:E/MediaPlayer: error (1, -19)。我通过使用以下代码实现自动发布来避免应用程序崩溃:

    mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                        @Override
                        public void onCompletion(MediaPlayer mp) {
                            mediaPlayer.release();

                        }
                    });

但这不是我想要的，同时听到几个声音很烦人。我想要的是在单击新声音时停止以前的声音，我尝试实现媒体播放器停止和释放，但没有成功。

这个是google play里面的app，大家可以自行查看:https://play.google.com/store/apps/details?id=org.pero.androidd.animalSoundsQuiz

这是我播放声音的适配器代码。在此代码中有部分 MediaPlayer.OnCompletionListener() ，我在声音完成后释放声音以避免 E/MediaPlayer: error (1, -19) 错误，但这不是我想要的应用程序.单击新声音后，我想停止以前的声音。

import android.content.Context;
import android.media.MediaPlayer;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.pero.androidd.animalsoundsforchildren.R;

import java.util.List;


public class ZivotinjeAdapter extends RecyclerView.Adapter<ZivotinjeAdapter.ViewHolder> {

    private List<Zivotinje> mZivotinje;


    @Override
    public ZivotinjeAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        Context context = parent.getContext();
        LayoutInflater inflater = LayoutInflater.from(context);

        // Inflate the custom layout
        View contactView = inflater.inflate(R.layout.item_zivotinje, parent, false);

        // Return a new holder instance
        ViewHolder viewHolder = new ViewHolder(contactView);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(ZivotinjeAdapter.ViewHolder viewHolder, int position) {


        Zivotinje zivotinjeIme = mZivotinje.get(position);

        // Set item views based on the data model
        TextView textView = viewHolder.nameTextView;
        textView.setText(zivotinjeIme.getmAnimal_name());

        //THIS IS WHERE I HANDALE IMAGE VIEW. Using glide for images
        //Dohvacamo context svakog views
        ImageView slika_source = viewHolder.imageView;
        Glide.with(slika_source.getContext())
                .load((Integer) zivotinjeIme.getmAnimal_slika())
                .into(slika_source);


        viewHolder.setItem(mZivotinje.get(position));

    }


    @Override
    public int getItemCount() {
        return mZivotinje.size();
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {

        public ImageView imageView;
        public TextView nameTextView;
        private Zivotinje mItem;



        public void setItem(Zivotinje item) {
            this.mItem = item;
        }



        public ViewHolder(final View itemView) {
            super(itemView);

            nameTextView = (TextView) itemView.findViewById(R.id.zivotinjaIme_id);
            imageView = (ImageView) itemView.findViewById(R.id.slika_id);


            //Handdaling clicks
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                                        
                    final MediaPlayer mediaPlayer = MediaPlayer.create(v.getContext(), mItem.getmSound());
                    mediaPlayer.start();

                    
                    //releace media player after sound finish
                    // BUT I DO NOT WANT TIS, I WANT TO STOP PREVIOUS SOUND WHEN I CLICK NEW ONE
                    mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                        @Override
                        public void onCompletion(MediaPlayer mp) {
                            mediaPlayer.release();

                        }
                    });
                }
            });

        }


    }


    public ZivotinjeAdapter(List<Zivotinje> animals) {
        mZivotinje = animals;
    }


}

编辑编辑编辑编辑编辑编辑:

我找到了解决方案，我不知道这是不是最聪明的方法，但它对我来说很好:

我所做的是我制作了静态媒体播放器变量，这样我就可以从 ViewHolder 访问媒体播放器并在我单击新播放器时停止之前的声音。希望对您有所帮助。

完整代码如下:

public class ZivotinjeAdapter extends RecyclerView.Adapter<ZivotinjeAdapter.ViewHolder> {

    private static MediaPlayer mediaPlayer; //THIS IS THE CHANGE I DONE

    @Override
    public ZivotinjeAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        Context context = parent.getContext();
        LayoutInflater inflater = LayoutInflater.from(context);

        // Inflate the custom layout
        View contactView = inflater.inflate(R.layout.item_zivotinje, parent, false);

        // Return a new holder instance
        ViewHolder viewHolder = new ViewHolder(contactView);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(ZivotinjeAdapter.ViewHolder viewHolder, int position) {


        Zivotinje zivotinjeIme = mZivotinje.get(position);

        // Set item views based on the data model
        TextView textView = viewHolder.nameTextView;
        textView.setText(zivotinjeIme.getmAnimal_name());

        //THIS IS WHERE I HANDALE IMAGE VIEW. Using glide for images
        ImageView slika_source = viewHolder.imageView;
        Glide.with(slika_source.getContext())
                .load((Integer) zivotinjeIme.getmAnimal_slika())
                .into(slika_source);


        viewHolder.setItem(mZivotinje.get(position));

    }


    @Override
    public int getItemCount() {
        return mZivotinje.size();
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {

        public ImageView imageView;
        public TextView nameTextView;
        private Zivotinje mItem;


        public void setItem(Zivotinje item) {
            this.mItem = item;
        }


        public ViewHolder(final View itemView) {
            super(itemView);

            nameTextView = (TextView) itemView.findViewById(R.id.zivotinjaIme_id);
            imageView = (ImageView) itemView.findViewById(R.id.slika_id);


//handaling clicks 
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {


                    if (mediaPlayer != null && mediaPlayer.isPlaying()) {
                        mediaPlayer.stop();
                        mediaPlayer.reset();
                        mediaPlayer.release();
                        mediaPlayer = null;
                    }


                    mediaPlayer = MediaPlayer.create(v.getContext(), mItem.getmSound());
                    mediaPlayer.start();

                }
            });

        }


    }

    private List<Zivotinje> mZivotinje;

    public ZivotinjeAdapter(List<Zivotinje> animals) {
        mZivotinje = animals;
    }


}

Answer 1

您首先必须检查是否有正在播放的声音，如果有，您应该在用户决定开始播放新声音时停止播放。

itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mediaplayer.isPlaying ()) {
                    if (mediaplayer != null){
                        mediaplayer.stop ();
                    }
                } else {
                    if (mediaplayer != null) {
                        mediaplayer.start ();
                    }
                }
            }
        });

在 setOnCompletionListner 中，如果用户收听了整个声音 fragment ，您将释放声音。

        mediaplayer. setOnCompletionListner (new MediaPlayer.OnCompletionListner () {
            public void OnCompletion (MediaPlayer mediaplayer) {
                mediaplayer.release ();
            }
        });