Recycler View显示项目列表但不滚动，两个项目都不可点击

Question

该应用程序包含两个回收站视图，每个视图都有自己的布局XML文件。当数据提供给与回收器视图关联的适配器时，它会呈现项目，但视图不可滚动，并且视图中的项目都不可单击。

片段类

public class OrderListFragment extends Fragment {

private RecyclerView orderListRecyclerView;
private TextView orderListEmptyTextView;
private RecyclerView.Adapter adapter;

protected OrderList orderList;

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        orderList = (OrderList) 
         getArguments().getSerializable(ORDER_LIST_SERIALIZED);
    }
}

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup 
container,
                         @Nullable Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment_order_list, container, false);
}

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle 
savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    initializeViews(view);
    initAdapter();
}

private void initializeViews(View view) {
    orderListRecyclerView = view.findViewById(R.id.order_list_recycler_view);
    orderListRecyclerView.setHasFixedSize(true);
    orderListRecyclerView.setLayoutManager(new 
     LinearLayoutManager(getActivity()));
    orderListEmptyTextView = view.findViewById(R.id.order_list_text_view);
    if (orderList != null) {
        orderListRecyclerView.setVisibility(VISIBLE);
        orderListEmptyTextView.setVisibility(GONE);
    }
}

private void initAdapter() {
    if (orderList != null) {
        adapter = new OrderListAdapter(getActivity(), 
        orderList.getOrderDetails(), ORDER_LIST_FLAG);
        orderListRecyclerView.setAdapter(adapter);
        }
    }
}

它的布局xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.v7.widget.RecyclerView
    android:id="@+id/order_list_recycler_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="5dp"
    android:visibility="gone"/>

<TextView
    android:id="@+id/order_list_text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:gravity="center_horizontal"
    android:text="@string/no_order" />
</RelativeLayout>

你们可以看看并建议应该采取什么措施让它发挥作用？

修改

OrderListAdapter

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

    private Context context;
    private List<Order> orderList;
    private String orderFlag;

    public OrderListAdapter(Context context, List<Order> orderList, String orderFlag) {
        this.context = context;
        this.orderList = orderList;
        this.orderFlag = orderFlag;
    }

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

    @Override
    public void onBindViewHolder(@NonNull OrderListAdapter.ViewHolder holder, int position) {
        final Order order = orderList.get(position);
        if (order != null) {
            if (!TextUtils.isEmpty(order.getName())) {
                holder.getOrderName().setText(order.getName());
            }

            if (!TextUtils.isEmpty(order.getStatus())) {
                holder.getOrderStatus().setText(order.getStatus());
            }

            if (orderFlag.equals(ORDER_LIST_FLAG)) {
                holder.getViewOrder().setVisibility(View.VISIBLE);
                holder.getViewOrder().setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        new AlertDialogFragment().createSingleChoiceDialog(context,
                                context.getString(R.string.order_detail),
                                order.getName(),
                                R.string.yes_button, new DialogInterface.OnClickListener() {
                                    @Override
                                    public void onClick(DialogInterface dialogInterface, int i) {

                                    }
                                }).show();
                    }
                });
            }
        }
    }

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

    public class ViewHolder extends RecyclerView.ViewHolder {

        private TextView orderName;
        private TextView orderStatus;
        private TextView viewOrder;

        public ViewHolder(View itemView) {
            super(itemView);
            orderName = itemView.findViewById(R.id.tv_order_name);
            orderStatus = itemView.findViewById(R.id.tv_order_status);
            viewOrder = itemView.findViewById(R.id.tv_view_order);
        }

        public TextView getOrderName() {
            return orderName;
        }

        public TextView getOrderStatus() {
            return orderStatus;
        }

        public TextView getViewOrder() {
            return viewOrder;
        }
    }
}

Item_row.XML

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <android.support.v7.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:elevation="3dp"
        tools:targetApi="lollipop">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="horizontal">

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_margin="5dp"
                android:orientation="vertical">

                <TextView
                    android:id="@+id/tv_order_name"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="5dp"
                    android:textStyle="bold"
                    tools:text="Name of order" />

                <TextView
                    android:id="@+id/tv_order_status"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="5dp"
                    tools:text="Order Status" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_centerVertical="true"
                android:layout_gravity="center"
                android:layout_margin="5dp">

                <TextView
                    android:id="@+id/tv_view_order"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="5dp"
                    android:textStyle="bold"
                    android:text="@string/view"
                    android:visibility="gone"
                    android:textColor="@color/text_view_button"/>
            </LinearLayout>

        </RelativeLayout>
    </android.support.v7.widget.CardView>
</RelativeLayout>