Question

我使用动物图像构建应用程序，点击动物后，它会播放该动物的声音。

我使用Recyclerview显示所有动物物品。

我的问题是我不知道如何处理点击事件以播放每只动物的声音。我知道如何在recyclerview中为每个项目播放相同的声音，但我不知道如何处理每个项目的特定声音。

这是我处理数据的类的代码，其中我为每个对象放置了所有动物名称，图像和声音。

＆＃13;

package com.example.android.animalsoundsforchildren;

import java.util.ArrayList;


public class Zivotinje {
    private String mAnimal_name;
    private int mAnimal_slika;
    private int mSound;


    public Zivotinje(String animalName, int slika, int sound) {
        this.setmAnimal_name(animalName);
        this.setmAnimal_slika(slika);
        this.setmSound(sound);
    }

    public String getmAnimal_name() {
        return mAnimal_name;
    }

    public void setmAnimal_name(String mAnimal_name) {
        this.mAnimal_name = mAnimal_name;
    }

    public int getmAnimal_slika() {
        return mAnimal_slika;
    }

    public void setmAnimal_slika(int mAnimal_slika) {
        this.mAnimal_slika = mAnimal_slika;
    }

    public int getmSound() {
        return mSound;
    }

    public void setmSound(int mSound) {
        this.mSound = mSound;
    }

    //putting data
    public static ArrayList<Zivotinje> createZivotinjeList() {
        ArrayList<Zivotinje> animals = new ArrayList<Zivotinje>();

        animals.add(new Zivotinje("Sheep", R.drawable.domestic_sheep, R.raw.gun));
        animals.add(new Zivotinje("Sparrow", R.drawable.birds_sparrow, R.raw.birds_sparrow));
        animals.add(new Zivotinje("Dolphin", R.drawable.sea_dolphin, R.raw.dolphin));
        animals.add(new Zivotinje("Bumblebee", R.drawable.insects_bumblebee, R.raw.bumblebee));
        animals.add(new Zivotinje("Tractor", R.drawable.cars_tractor, R.raw.tractor));
        animals.add(new Zivotinje("Baby Cry", R.drawable.laugh_baby_cry, R.raw.baby_cray));
        animals.add(new Zivotinje("Wind", R.drawable.nature_wind, R.raw.wind));
        animals.add(new Zivotinje("Golf", R.drawable.effects_golf, R.raw.golf));
        animals.add(new Zivotinje("Clock", R.drawable.others_clock, R.raw.clock));


        return animals;
    }
}

＆＃13;

这是适配器的代码，在这里我处理点击，当我点击项目时，它播放相同的声音，但如何为每个动物播放不同的声音，而不是像这里一样的声音。在这里我总是播放声音R.raw.clock

＆＃13;

package com.example.android.animalsoundsforchildren;

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 java.util.List;


public class ZivotinjeAdapter extends RecyclerView.Adapter<ZivotinjeAdapter.ViewHolder> {

    @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());

        ImageView slika_source = viewHolder.imageView;
        slika_source.setImageResource(zivotinjeIme.getmAnimal_slika());





    }


    @Override
    public int getItemCount() {
        return mZivotinje.size();
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {

        public ImageView imageView;
        public TextView nameTextView;




        public ViewHolder(final View itemView) {
            super(itemView);

            nameTextView = (TextView) itemView.findViewById(R.id.zivotinjaIme_id);
            imageView = (ImageView) itemView.findViewById(R.id.slika_id);





            //It works when i play for each item sound but how to play specific sound for each animal
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    MediaPlayer mediaPlayer = MediaPlayer.create(v.getContext(), R.raw.clock);
                    mediaPlayer.start();
                }
            });

        }
    }

    private List<Zivotinje> mZivotinje;

    public ZivotinjeAdapter(List<Zivotinje> animals) {
        mZivotinje = animals;
    }
}

＆＃13;

Answer 1

你可以做的一件事是使用一个switch语句来检查点击了哪只动物，然后采取相应行动。

如果您拥有大量动物，请让所有动物从Animal类继承，该类将具有抽象的makeSound（）方法。在子类中重写该方法以使它们发出自己的声音。在onClick（）方法中，调用makeSound（）方法。

Answer 2

您可以通过调用getAdapterPosition（）来访问ViewHolder中的位置

一旦你有位置，你就可以在那个位置得到物品（动物物体），比如把适配器中的动物列表保存起来。现在，您可以轻松访问要播放的对象中的声音。

Answer 3

请参阅链接https://gist.github.com/grantland/cd70814fe4ac369e3e92

您可以参考项目点击事件以及如何获取点击事件

上的项目

请参阅以下代码。我做了改变

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

    @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());

        ImageView slika_source = viewHolder.imageView;
        slika_source.setImageResource(zivotinjeIme.getmAnimal_slika());

       viewHolder.setItem(mZivotinje[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 ViewHolder(final View itemView) {
            super(itemView);

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


 public void setItem(Zivotinje item) {
            mItem = item;

        }




            //It works when i play for each item sound but how to play specific sound for each animal
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                      // here you will get mItem and from that you can get the sound
                    MediaPlayer mediaPlayer = MediaPlayer.create(v.getContext(), R.raw.clock);
                    mediaPlayer.start();
                }
            });

        }
    }

    private List<Zivotinje> mZivotinje;

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

Answer 4

//您可以通过以下方式在recyclerview item的每个位置上实现音乐

// 在您的适配器中将意图传递给您正在播放音乐的下一个活动绑定您的适配器类的视图

     holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String str_pos = String.valueOf(position);
            Intent intent = new Intent(v.getContext(), PlayerActivity.class);
            intent.putExtra("myKey", str_pos);
            v.getContext().startActivity(intent);
        }
    });


 public class PlayerActivity extends AppCompatActivity {
 ImageButton buttonPlay;
 MediaPlayer mPlayer;

 AudioManager audioManager;
  boolean isPlaying = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_player);

    buttonPlay = findViewById(R.id.buttonPlay);
    
   //getting the intent
    Bundle extras = getIntent().getExtras();
    String tmp = extras.getString("myKey");
    int position = Integer.parseInt(tmp);

    //applying the condition on position of each
    if (position == 0)
    {
        mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.r1);
        mPlayer.start();
        mPlayer.setLooping(true);
    }

    else if (position == 1){
        mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.r2);
        mPlayer.start();
        mPlayer.setLooping(true);
    }
    else if (position == 2){
        mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.mm);
        mPlayer.start();
        mPlayer.setLooping(true);
    }
    else if (position == 3){
        mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.r2);
        mPlayer.start();
        mPlayer.setLooping(true);
    }
    else if (position == 4){
        mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.mm);
        mPlayer.start();
        mPlayer.isLooping();
        mPlayer.setLooping(true);
    }
    else if (position == 5){
        mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.mm);
        mPlayer.start();
        mPlayer.setLooping(true);
    }

    buttonPlay.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (isPlaying) {
                mPlayer.pause();
                buttonPlay.setImageResource(R.drawable.ic_play);
                isPlaying = false;
            }
            else {

                mPlayer.start();
                isPlaying = true;
                buttonPlay.setImageResource(R.drawable.ic_pause);
            }
         }
    });

//perfoam on resume etc
 @Override
public void onBackPressed() {
    // TODO Auto-generated method stub
    super.onBackPressed();
    stopPlayer();
    finish();
}

private void stopPlayer() {
    if (mPlayer != null) {
        mPlayer.release();
        mPlayer = null;
    }
}

@Override
protected void onStop() {
    super.onStop();
    stopPlayer();
}

@Override
protected void onRestart() {
    super.onRestart();
}

@Override
protected void onPause() {
    super.onPause();
    if (mPlayer !=null){
        mPlayer.pause();
    }
}

@Override
protected void onResume() {
    super.onResume();
    if (mPlayer !=null){
        mPlayer.start();

    }
    else {
        mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.mm);
        mPlayer.start();
        mPlayer.isLooping();
        buttonPlay.setImageResource(R.drawable.ic_pause);
    }
}

Android如何在recyclerview中为每个项目播放不同的声音

4 个答案: