java - recycleview 设置适配器中支持 v4 view.NestedScrollingChild2 时出错

Question

我想创建一个水平回收 View ，我编写了以下代码:

在主要 Activity xml 中

 <RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="10dp" >
    <android.support.v7.widget.RecyclerView
    android:id="@+id/my_recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>
</RelativeLayout>

这是适配器类

public class AdapterNote extends ArrayAdapter<StructCategory> {

public AdapterNote(ArrayList<StructCategory> array) {
    super(G.context, R.layout.adapter_category, array);
}
private static class ViewHolder {

    public TextView txtTitle;


    public ViewHolder(View view) {
        txtTitle = (TextView) view.findViewById(R.id.cat_txt);

    }
    public void fill(final ArrayAdapter<StructCategory> adapter, final StructCategory item, final int position) {
        txtTitle.setText(item.title);
    }
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;

    StructCategory item = getItem(position);
    if (convertView == null) {
        convertView = G.inflater.inflate(R.layout.adapter_category, parent, false);
        holder = new ViewHolder(convertView);
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.fill(this, item, position);
    return convertView;
}}

在MainClass设置适配器中setadapter 函数有错误:无法解析类型 android.support.v4.view.NestedScrollingChild2。它是从所需的.class文件间接引用的

我导入了支持 v4 api 20 和 v7compat v20 和 v7 recycleview api 20但不工作我的代码

LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);

    RecyclerView myList = (RecyclerView) findViewById(R.id.my_recycler_view);
    myList.setLayoutManager(layoutManager);
    adapter = new AdapterNote(G.tasksCategory);
    myList.setAdapter(adapter);

我为适配器类创建 xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" android:padding="8dip" android:gravity="right">
<TextView
    android:id="@+id/cat_txt"
    android:layout_width="80dp"
    android:layout_height="80dp"
    android:background="@drawable/category_txt"
    android:gravity="center_vertical|center"
    android:text="TextView"
    android:textColor="#000" />
    </LinearLayout>

请帮我解决这个问题

Answer 1

当您使用 RecyclerView 时，请通过 RecyclerView.Adapter<> 扩展您的适配器类。

请引用:https://www.google.com/amp/s/www.androidhive.info/2016/01/android-working-with-recycler-view/amp/