Android Recyclerview MediaPlayer上一个项目声音停止，点击新项目后发布

Question

在我的应用程序中，我有recyclerview项目，当我点击它时，每个项目都会播放声音。问题是，当我点击几个项目时，它们都会在同一时间播放声音，直到它们完成。比方说，我点击了10个项目，所有10个声音都在同一时间播放，过了一段时间，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，同时听到很少的声音很烦人。当我点击新的声音时，我想停止以前的声音，我试图让媒体播放器停止并释放，但没有成功。

这是谷歌播放中的应用程序，因此您可以自己检查：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。在这段代码中，有一部分MediaPlayer.OnCompletionListener()，我在声音完成后将声音释放到aviodE/MediaPlayer:error(1，-19)错误，但这不是我在应用程序中想要的。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：

我找到了解决方案，我不知道这是最聪明的方法，但它对我来说很好：

我所做的是，我让静态媒体播放器可变，这样我就可以从ViewHolder访问媒体播放器，并在点击新声音时停止以前的声音。希望能有所帮助。

这是整个代码：

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，则应在用户决定启动新声音时停止播放。

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片段，则会释放声音。

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