你可以创建addHeaderView并使用

adapter.addHeaderView(视图)。

这段代码为多个头文件构建addHeaderView。 头文件应该有:

android: layout_height = " wrap_content "

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private static final int TYPE_ITEM = -1;
    public class MyViewSHolder extends RecyclerView.ViewHolder {
        public MyViewSHolder (View view) {
            super(view);
        }
        // put you code. for example:
        View mView;
        ...
    }

    public class ViewHeader extends RecyclerView.ViewHolder {
        public ViewHeader(View view) {
            super(view);
        }
    }

    private List<View> mHeaderViews = new ArrayList<>();
    public void addHeaderView(View headerView) {
        mHeaderViews.add(headerView);
    }

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

    @Override
    public int getItemViewType(int position) {
        if (mHeaderViews.size() > position) {
            return position;
        }

        return TYPE_ITEM;
    }
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType != TYPE_ITEM) {
            //inflate your layout and pass it to view holder
            return new ViewHeader(mHeaderViews.get(viewType));
        }
        ...
    }
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int basePosition1) {
        if (holder instanceof ViewHeader) {
            return;
        }
        int basePosition = basePosition1 -  mHeaderViews.size();
        ...
    }
}

First - extends RecyclerView.Adapter<RecyclerView.ViewHolder>

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

重载getItemViewTpe方法后 * * *更重要

@Override
public int getItemViewType(int position) {
    return position;
}

方法onCreateViewHolder

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.menu_item, parent, false);
    View header = LayoutInflater.from(parent.getContext()).inflate(R.layout.menu_header_item, parent, false);
    Log.d("onCreateViewHolder", String.valueOf(viewType));

    if (viewType == 0) {
        return new MenuLeftHeaderViewHolder(header, onClickListener);
    } else {
        return new MenuLeftViewHolder(view, onClickListener);
    }
}

方法onBindViewHolder

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
    if (position == 0) {
        MenuHeaderViewHolder menuHeaderViewHolder = (MenuHeaderViewHolder) holder;
        menuHeaderViewHolder.mTitle.setText(sMenuTitles[position]);
        menuHeaderViewHolder.mImage.setImageResource(sMenuImages[position]);
    } else {
        MenuViewHolder menuLeftViewHolder = (MenuLeftViewHolder) holder;
        menuViewHolder.mTitle.setText(sMenuTitles[position]);
        menuViewHolder.mImage.setImageResource(sMenuImages[position]);
    }
}

在finish中实现了ViewHolders类静态

public static class MenuViewHolder extends RecyclerView.ViewHolder 

public static class MenuLeftHeaderViewHolder extends RecyclerView.ViewHolder 

我知道这是一个老问题，但我还是想提供一个答案。

这里有一个ConcatAdapter(文档)可以为您解决这个问题。 你所要做的就是定义你的头视图布局，并用一个项目创建一个虚拟适配器 在Kotlin中，它只需要几行

class HeaderAdapter(private val inflater: LayoutInflater) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
    
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = object : RecyclerView.ViewHolder(inflater.inflate(yourViewLayoutId, parent, false)) {}

    override fun onBindViewHolder(viewHolder: RecyclerView.ViewHolder, position: Int) {}

    override fun getItemCount() = 1
}

在此之后，您所要做的就是将头适配器和原始适配器添加到ConcatAdapter

recyclerView.adapter = ConcatAdapter(headerAdapter, adapter)

有关更多详细信息和高级案例，请参阅文档。

还有一个解决方案涵盖了上述所有用例:CompoundAdapter: https://github.com/negusoft/CompoundAdapter-android

您可以创建一个AdapterGroup来保存您的适配器，以及一个带有单个项的适配器，以表示头部。代码简单易读:

AdapterGroup adapterGroup = new AdapterGroup();
adapterGroup.addAdapter(SingleAdapter.create(R.layout.header));
adapterGroup.addAdapter(new CommentAdapter(...));

recyclerView.setAdapter(adapterGroup);

AdapterGroup也允许嵌套，因此对于带有节的适配器，您可以为每个节创建一个AdapterGroup。然后将所有部分放在根适配器组中。

也许将header和recyclerview包装成一个coordinatorlayout:

<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:elevation="0dp">

    <View
        android:id="@+id/header"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_scrollFlags="scroll" />

</android.support.design.widget.AppBarLayout>

<android.support.v7.widget.RecyclerView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />

出于个人目的，我在@hister的基础上做了一个实现，但使用了继承。

我在抽象超类HeadingableRecycleAdapter中隐藏了实现细节机制(如向itemCount中添加1，从position中减去1)，通过 实现所需的方法从适配器像onBindViewHolder, getItemViewType和getItemCount，使该方法最终，并提供新的方法与隐藏的逻辑客户端:

onAddViewHolder (RecyclerView。ViewHolder holder, int position)， onCreateViewHolder (ViewGroup父), itemCount ()

这里是HeadingableRecycleAdapter类和一个客户端。我留下的标题布局有点硬编码，因为它符合我的需要。

public abstract class HeadingableRecycleAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private static final int HEADER_VIEW_TYPE = 0;

    @LayoutRes
    private int headerLayoutResource;
    private String headerTitle;
    private Context context;

    public HeadingableRecycleAdapter(@LayoutRes int headerLayoutResourceId, String headerTitle, Context context) {
        this.headerLayoutResource = headerLayoutResourceId;
        this.headerTitle = headerTitle;
        this.context = context;
    }

    public Context context() {
        return context;
    }

    @Override
    public final RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType == HEADER_VIEW_TYPE) {
            return new HeaderViewHolder(LayoutInflater.from(context).inflate(headerLayoutResource, parent, false));
        }
        return onCreateViewHolder(parent);
    }

    @Override
    public final void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        int viewType = getItemViewType(position);
        if (viewType == HEADER_VIEW_TYPE) {
            HeaderViewHolder vh = (HeaderViewHolder) holder;
            vh.bind(headerTitle);
        } else {
            onAddViewHolder(holder, position - 1);
        }
    }

    @Override
    public final int getItemViewType(int position) {
        return position == 0 ? 0 : 1;
    }

    @Override
    public final int getItemCount() {
        return itemCount() + 1;
    }

    public abstract int itemCount();

    public abstract RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent);

    public abstract void onAddViewHolder(RecyclerView.ViewHolder holder, int position);

}



@PerActivity
public class IngredientsAdapter extends HeadingableRecycleAdapter {
    public static final String TITLE = "Ingredients";
    private List<Ingredient> itemList;


    @Inject
    public IngredientsAdapter(Context context) {
        super(R.layout.layout_generic_recyclerview_cardified_header, TITLE, context);
    }

    public void setItemList(List<Ingredient> itemList) {
        this.itemList = itemList;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent) {
        return new ViewHolder(LayoutInflater.from(context()).inflate(R.layout.item_ingredient, parent, false));
    }

    @Override
    public void onAddViewHolder(RecyclerView.ViewHolder holder, int position) {
        ViewHolder vh = (ViewHolder) holder;
        vh.bind(itemList.get(position));
    }

    @Override
    public int itemCount() {
        return itemList == null ? 0 : itemList.size();
    }

    private String getQuantityFormated(double quantity, String measure) {
        if (quantity == (long) quantity) {
            return String.format(Locale.US, "%s %s", String.valueOf(quantity), measure);
        } else {
            return String.format(Locale.US, "%.1f %s", quantity, measure);
        }
    }


    class ViewHolder extends RecyclerView.ViewHolder {
        @BindView(R.id.text_ingredient)
        TextView txtIngredient;

        ViewHolder(View itemView) {
            super(itemView);
            ButterKnife.bind(this, itemView);
        }

        void bind(Ingredient ingredient) {
            String ingredientText = ingredient.getIngredient();
            txtIngredient.setText(String.format(Locale.US, "%s %s ", getQuantityFormated(ingredient.getQuantity(),
                    ingredient.getMeasure()), Character.toUpperCase(ingredientText.charAt(0)) +
                    ingredientText
                            .substring(1)));
        }
    }
}