Android 为RecyclerView添加HeaderView和FooterView

最新推荐文章于 2025-05-17 15:44:43 发布

合抱之木，生于毫末,九层之台，起于累土

最新推荐文章于 2025-05-17 15:44:43 发布

阅读量1.6k

点赞数

CC 4.0 BY-SA版权

分类专栏： AndroidView 文章标签： RecyclerView添加headview&amp;footerv

本文链接：https://blog.youkuaiyun.com/u014133119/article/details/80655543

AndroidView 专栏收录该内容

4 篇文章

订阅专栏

本文介绍了一种在RecyclerView中添加HeaderView和FooterView的方法。通过为它们设置不同的ItemType，可以在列表的顶部和底部添加额外的视图。文章提供了完整的代码实现，并解释了如何根据不同位置返回对应的ViewHolder。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

对于添加headerView或者footerView

其实HeaderView实际上也是Item的一种，只不过显示在顶部的位置，那么我们完全可以通过为其设置ItemType来完成。

有了思路以后，接下来考虑一些细节。

适配器
public class TimeTablesAdapter extends RecyclerView.Adapter<TimeTablesAdapter.ViewHolder> { public static final int TYPE_HEADER = 0; //带有Header public static final int TYPE_FOOTER = 1; //带有Footer public static final int TYPE_NORMAL = 2; //不带有header和footer List<TimetablesBean> listData; private LayoutInflater inflater; private Context mContext; /** * HeaderView, FooterView */ private View mHeaderView; private View mFooterView; public TimeTablesAdapter(Context context) { mContext = context; this.inflater = LayoutInflater.from(mContext); } public void setListData(List<TimetablesBean> listData) { this.listData = listData; } protected View getHeaderView() { return mHeaderView; } public void setHeaderView(View headerView) { mHeaderView = headerView; } public View getFooterView() { return mFooterView; } protected void setFooterView(View footerView) { mFooterView = footerView; }

适配器

public class TimeTablesAdapter extends RecyclerView.Adapter<TimeTablesAdapter.ViewHolder> {
    public static final int TYPE_HEADER = 0; //带有Header
    public static final int TYPE_FOOTER = 1; //带有Footer
    public static final int TYPE_NORMAL = 2; //不带有header和footer


    List<TimetablesBean> listData;
    private LayoutInflater inflater;
    private Context mContext;

    /**
     * HeaderView, FooterView
     */
    private View mHeaderView;
    private View mFooterView;

    public TimeTablesAdapter(Context context) {
        mContext = context;
        this.inflater = LayoutInflater.from(mContext);
    }

    public void setListData(List<TimetablesBean> listData) {
        this.listData = listData;
    }

    protected View getHeaderView() {
        return mHeaderView;
    }

    public void setHeaderView(View headerView) {
        mHeaderView = headerView;
    }

    public View getFooterView() {
        return mFooterView;
    }

    protected void setFooterView(View footerView) {
        mFooterView = footerView;
    }

onCreateViewHolder
@Override public TimeTablesAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { // return new ViewHolder(inflater.inflate(R.layout.activity_timetables_patternc, parent, false)); if (mHeaderView != null && viewType == TYPE_HEADER) { return new ViewHolder(mHeaderView); } if (mFooterView != null && viewType == TYPE_FOOTER) { return new ViewHolder(mFooterView); } View layout = inflater.inflate(R.layout.activity_timetables_patternc, parent, false); return new ViewHolder(layout); }

onCreateViewHolder

 @Override
    public TimeTablesAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//        return new ViewHolder(inflater.inflate(R.layout.activity_timetables_patternc, parent, false));
        if (mHeaderView != null && viewType == TYPE_HEADER) {
            return new ViewHolder(mHeaderView);
        }
        if (mFooterView != null && viewType == TYPE_FOOTER) {
            return new ViewHolder(mFooterView);
        }
        View layout = inflater.inflate(R.layout.activity_timetables_patternc, parent, false);
        return new ViewHolder(layout);

    }

onBindViewHolder
@Override public void onBindViewHolder(TimeTablesAdapter.ViewHolder holder, int position) { if (getItemViewType(position) == TYPE_NORMAL) { if (holder instanceof ViewHolder) { //这里加载数据的时候要注意，是从position-1开始，因为position==0已经被header占用了 holder.mClassTitle.setText("10:30-10:30 钢琴室"); return; } return; } else if (getItemViewType(position) == TYPE_HEADER) { holder.mTotalSchedule.setText("12"); return; } else { return; } }

onBindViewHolder

@Override
public void onBindViewHolder(TimeTablesAdapter.ViewHolder holder, int position) {
    if (getItemViewType(position) == TYPE_NORMAL) {
        if (holder instanceof ViewHolder) { //这里加载数据的时候要注意，是从position-1开始，因为position==0已经被header占用了
            holder.mClassTitle.setText("10:30-10:30 钢琴室");
            return;
        }
        return;
    } else if (getItemViewType(position) == TYPE_HEADER) {
        holder.mTotalSchedule.setText("12");
        return;
    } else {
        return;
    }
}

getItemCount
@Override public int getItemCount() { if (mHeaderView == null && mFooterView == null) { return listData.size(); } else if (mHeaderView == null && mFooterView != null) { return listData.size() + 1; } else if (mHeaderView != null && mFooterView == null) { return listData.size() + 1; } else { return listData.size() + 2; } }

getItemCount

@Override
public int getItemCount() {
    if (mHeaderView == null && mFooterView == null) {
        return listData.size();
    } else if (mHeaderView == null && mFooterView != null) {
        return listData.size() + 1;
    } else if (mHeaderView != null && mFooterView == null) {
        return listData.size() + 1;
    } else {
        return listData.size() + 2;
    }
}

ViewHolder
class ViewHolder extends RecyclerView.ViewHolder { private TextView mClassTitle, mTturriculum, mTClassroom, mTStudying, mTotalSchedule; public ViewHolder(View view) { super(view); if (itemView == mHeaderView) { mTotalSchedule = view.findViewById(R.id.tv_totalSchedule); return; } if (itemView == mFooterView) { return; } /** * 内容 */ mClassTitle = (TextView) view.findViewById(R.id.tv_classTitle); } }

ViewHolder

class ViewHolder extends RecyclerView.ViewHolder {
    private TextView mClassTitle, mTturriculum, mTClassroom, mTStudying, mTotalSchedule;

    public ViewHolder(View view) {
        super(view);
        if (itemView == mHeaderView) {
            mTotalSchedule = view.findViewById(R.id.tv_totalSchedule);
            return;
        }
        if (itemView == mFooterView) {
            return;
        }
        /**
         * 内容
         */
        mClassTitle = (TextView) view.findViewById(R.id.tv_classTitle);

    }
}

getItemViewType
@Override public int getItemViewType(int position) { if (mHeaderView == null && mFooterView == null) { return TYPE_NORMAL; } if (position == 0) { //第一个item应该加载Header return TYPE_HEADER; } if (position == getItemCount() - 1) { //最后一个,应该加载Footer return TYPE_FOOTER; } return TYPE_NORMAL; }

getItemViewType

@Override
public int getItemViewType(int position) {
    if (mHeaderView == null && mFooterView == null) {
        return TYPE_NORMAL;
    }
    if (position == 0) { //第一个item应该加载Header
        return TYPE_HEADER;
    }
    if (position == getItemCount() - 1) { //最后一个,应该加载Footer
        return TYPE_FOOTER;
    }
    return TYPE_NORMAL;
}

到此完成!!

可参考点击打开链接