1. 添加一个布尔数组来保存每个项目是否被选中。

private boolean[] selectedItems;

2. 在适配器的构造函数中初始化选中项数组，并在 onBindViewHolder() 方法中更新视图以反映选定状态。

public MyAdapter(List dataSet) { this.dataSet = dataSet; selectedItems = new boolean[dataSet.size()]; }

@Override public void onBindViewHolder(MyViewHolder holder, int position) { MyModel myModel = dataSet.get(position); holder.title.setText(myModel.getTitle()); holder.description.setText(myModel.getDescription()); holder.checkBox.setChecked(selectedItems[position]); // set checkbox state based on selectedItems }

3. 为 RecyclerView 添加一个 OnItemClickListener 以便在单击项目时更新 selectedItems。

public interface OnItemClickListener { void onItemClick(int position); }

public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { public TextView title; public TextView description; public CheckBox checkBox;

public MyViewHolder(View itemView) {
    super(itemView);
    title = itemView.findViewById(R.id.title);
    description = itemView.findViewById(R.id.description);
    checkBox = itemView.findViewById(R.id.checkbox);
    itemView.setOnClickListener(this);
}

@Override
public void onClick(View view) {
    int position = getAdapterPosition();
    onItemClick.onItemClick(position);
}

}

4. 在活动中处理 onItemClick 以更新 selectedItems。

public class MyActivity extends AppCompatActivity {

private List data;
private RecyclerView recyclerView;
private MyAdapter adapter;

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

    data = generateData();
    recyclerView = findViewById(R.id.recycler_view);
    adapter = new MyAdapter(data);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setAdapter(adapter);

    adapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
        @Override
        public void onItemClick(int position) {
            selectedItems[position] = !selectedItems[position]; // invert selected state
            adapter.notifyItemChanged(position);
        }
    });
}

private List generateData() {
    // generate data
}

public void deleteSelectedItems(View view) {
    // loop through selectedItems and delete corresponding items from data list
    for