Android 如何在底部工作表中获取checked recyclerview项并通过底部工作表中的按钮传递多个已检查数据

嗨，我不知道如何将多个选中的recyclerview项目数据上载到firebase

所以我想我必须知道哪个recyclerview项目被选中，以便将数据上传到firebase

但在底层java文件中，我不知道如何才能得到哪一个被检查

我的场景是，如果用户选中项目复选框（多项目检查可用）并单击“完成”按钮，则将数据上载到firebase

我怎样才能解决它

这是我的底部的recyclerview适配器

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

ArrayList<ItemBottomSheetFolderList> array;
Context context;
private RecyclerViewClickListener listener;

public AdapterPinBottomSheet(ArrayList<ItemBottomSheetFolderList> array, Context context, RecyclerViewClickListener listener) {
    this.array = array;
    this.context =context;
    this.listener = listener;
}

@NonNull
@Override
public AdapterPinBottomSheet.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.item_folderlist_bottomsheet,parent,false);
    return new AdapterPinBottomSheet.ViewHolder(view);
}

@SuppressLint("ResourceAsColor")
@Override
public void onBindViewHolder(@NonNull AdapterPinBottomSheet.ViewHolder holder, int position) {
    final ItemBottomSheetFolderList itemBottomSheetFolderList = array.get(position);
    holder.listFolderName.setText(array.get(position).getFolderName());
    holder.listFolderPinNum.setText(String.valueOf(array.get(position).getFolderPinNum()));
    holder.cbPinFolder.setOnCheckedChangeListener(null);

    holder.cbPinFolder.setChecked(itemBottomSheetFolderList.isSelected());

    holder.cbPinFolder.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            itemBottomSheetFolderList.setSelected(isChecked);
        }
    });

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

public interface RecyclerViewClickListener{
    void onClick(View v, int position);
}

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    TextView listFolderName;
    TextView listFolderPinNum;
    CheckBox cbPinFolder;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        listFolderName =itemView.findViewById(R.id.listFolderName);
        listFolderPinNum =itemView.findViewById(R.id.listFolderPinNum);
        cbPinFolder =itemView.findViewById(R.id.cbPinFolder);
        itemView.setOnClickListener(this);

    }

    @Override
    public void onClick(View v) {
        listener.onClick(itemView, getAdapterPosition());
        cbPinFolder.performClick();
    }
}

}

为了便于理解，我添加了我的UI

---

您可以在适配器中创建一个方法，单击“完成”可调用该方法以获取选定的数据列表。像下面这样

 public ArrayList<ItemBottomSheetFolderList> getSelectedArray() {
        ArrayList<ItemBottomSheetFolderList> selectedArray = new ArrayList<>();
        for (ItemBottomSheetFolderList folderList : array) {
            if (folderList.isSelected()) {
                selectedArray.add(folderList);
            }
        }
        return selectedArray;
    }

public ArrayList getSelectedArray（）{
ArrayList selectedArray=新建ArrayList（）；
对于（ItemBottomSheetFolderList folderList:array）{
if（folderList.isSelected（））{
选择Array.add（文件夹列表）；
}
}
返回所选阵列；
}

谢谢您的回答。我是初学者，所以我需要更多的建议。。！在adapter ViewHolder类中添加代码是否正确？我怎么能把这个叫做底部纸呢？我试过像（（AdapterInBottomSheet）folderRecyclerView.getAdapter（）.getSelectedArray（））；但是我找不到那种方法。谢谢你，先生！！！我解决了。我打错球了。By（（AdapterInBottomSheet）folderRecyclerView.getAdapter（））.getSelectedArray（）；这是我解决的！

 public ArrayList<ItemBottomSheetFolderList> getSelectedArray() {
        ArrayList<ItemBottomSheetFolderList> selectedArray = new ArrayList<>();
        for (ItemBottomSheetFolderList folderList : array) {
            if (folderList.isSelected()) {
                selectedArray.add(folderList);
            }
        }
        return selectedArray;
    }