在 Android RecyclerView 中实现点击事件与条件逻辑处理

// MyRecyclerViewAdapter.java
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {

    private List<String> mData;
    private LayoutInflater mInflater;
    private ItemClickListener mClickListener; // 定义点击监听器接口变量

    // 构造函数
    MyRecyclerViewAdapter(Context context, List<String> data) {
        this.mInflater = LayoutInflater.from(context);
        this.mData = data;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = mInflater.inflate(R.layout.adapter_box, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        String itemData = mData.get(position);
        holder.myTextView.setText(itemData);
    }

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

    // ViewHolder 类，负责持有视图并处理点击事件
    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        TextView myTextView;

        ViewHolder(View itemView) {
            super(itemView);
            myTextView = itemView.findViewById(R.id.text_adapter);
            itemView.setOnClickListener(this); // 为整个itemView设置点击监听
        }

        @Override
        public void onClick(View view) {
            // 当ViewHolder中的itemView被点击时，通过接口回调通知外部监听器
            if (mClickListener != null) {
                // getAdapterPosition() 返回当前ViewHolder在适配器中的位置
                mClickListener.onItemClick(view, getAdapterPosition());
            }
        }
    }

    // 方便外部获取指定位置的数据
    String getItem(int id) {
        return mData.get(id);
    }

    // 允许外部设置点击监听器
    void setClickListener(ItemClickListener itemClickListener) {
        this.mClickListener = itemClickListener;
    }

    // 定义点击事件回调接口
    public interface ItemClickListener {
        void onItemClick(View view, int position);
    }
}

// MainActivity.java
public class MainActivity extends AppCompatActivity implements MyRecyclerViewAdapter.ItemClickListener {

    MyRecyclerViewAdapter adapter;
    RecyclerView recyclerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 准备数据
        ArrayList<String> animalNames = new ArrayList<>();
        animalNames.add("Dog");
        animalNames.add("Cow");
        animalNames.add("Camel");
        animalNames.add("Sheep");
        animalNames.add("Goat");

        // 设置 RecyclerView
        recyclerView = findViewById(R.id.myList); // 假设您的RecyclerView ID为myList
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        adapter = new MyRecyclerViewAdapter(this, animalNames);
        adapter.setClickListener(this); // 将当前Activity设置为点击监听器
        recyclerView.setAdapter(adapter);
    }

    // 实现 MyRecyclerViewAdapter.ItemClickListener 接口的 onItemClick 方法
    @Override
    public void onItemClick(View view, int position) {
        // 获取被点击位置的数据
        String clickedItemData = adapter.getItem(position);

        // 根据点击的数据执行不同的条件逻辑
        if (clickedItemData.equals("Dog")) {
            // 例如，播放狗叫声
            soundPlay(MediaPlayer.create(getBaseContext(), R.raw.star)); // 假设raw/star是狗叫声
            Toast.makeText(this, "你点击了: " + clickedItemData + " (狗)", Toast.LENGTH_SHORT).show();
        } else if (clickedItemData.equals("Camel")) {
            // 例如，播放骆驼叫声
            soundPlay(MediaPlayer.create(getBaseContext(), R.raw.tick)); // 假设raw/tick是骆驼叫声
            Toast.makeText(this, "你点击了: " + clickedItemData + " (骆驼)", Toast.LENGTH_SHORT).show();
        } else if (clickedItemData.equals("Cow")) {
            // 其他动物的逻辑
            Toast.makeText(this, "你点击了: " + clickedItemData + " (牛)", Toast.LENGTH_SHORT).show();
        }
        // ... 可以添加更多条件判断
    }

    // 示例方法：播放声音 (需要根据实际情况实现)
    private void soundPlay(MediaPlayer mediaPlayer) {
        if (mediaPlayer != null) {
            mediaPlayer.start();
            mediaPlayer.setOnCompletionListener(mp -> {
                mp.release();
            });
        }
    }
}