我的代碼有問題，我在一個 recyclerview 中創建了兩個適配器。我把它們都放在一個類中，我需要這個適配器根據某些情況返回一個 Viewholder。這是我的適配器代碼：public class CurrentUserTaskListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {public List<Task> taskList;private static final int ITEM_TYPE_PUBLISHED_TASK = 1;private static final int ITEM_TYPE_ASSIGNED_TASK = 2;public CurrentUserTaskListAdapter(List<Task> taskList) {    this.taskList = taskList;}public class AssignedTaskViewHolder extends RecyclerView.ViewHolder {    View mView;    public TextView tvTagAndDate;    public TextView tvStatus;    public AssignedTaskViewHolder(View itemView) {        super(itemView);        mView = itemView;        tvTagAndDate = itemView.findViewById(R.id.tvTagAndDate);        tvStatus = itemView.findViewById(R.id.tvStatus);    }}public class PublishedTaskViewHolder extends RecyclerView.ViewHolder {    View mView;    public TextView tvTagAndDate;    public TextView tvStatus;    public PublishedTaskViewHolder(View itemView) {        super(itemView);        mView = itemView;        tvTagAndDate = itemView.findViewById(R.id.tvTagAndDate);        tvStatus = itemView.findViewById(R.id.tvStatus);    }}    @Override    public int getItemViewType(int position) {        if (taskList.get(position).getAssignedTo() == null)            return ITEM_TYPE_PUBLISHED_TASK;        else            return ITEM_TYPE_ASSIGNED_TASK;    }@NonNull@Overridepublic RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {    LayoutInflater layoutInflater = LayoutInflater.from(viewGroup.getContext());    if(i == ITEM_TYPE_ASSIGNED_TASK){        layoutInflater.inflate(R.layout.layout_curent_user_assigned_tasks_item, viewGroup, false);        return new AssignedTaskViewHolder(viewGroup);    }    else if (i == ITEM_TYPE_PUBLISHED_TASK){        layoutInflater.inflate(R.layout.layout_current_user_pending_tasks, viewGroup, false);        return new PublishedTaskViewHolder(viewGroup);    }    return null;}在 getItemViewType 方法中，我驗證列表中的對象是哪個類型。