{"id":1193,"date":"2016-02-04T20:44:30","date_gmt":"2016-02-04T12:44:30","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=1193"},"modified":"2026-08-18T12:58:47","modified_gmt":"2026-08-18T04:58:47","slug":"1193","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=1193","title":{"rendered":"\u4e3aRecyclerView\u6dfb\u52a0header"},"content":{"rendered":"
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ListView \u6709\u73b0\u6210\u7684 addHeaderView\uff0cRecyclerView \u548c\u5404 LayoutManager \u90fd\u6ca1\u6709\u3002\u8fd9\u7bc7\u89e3\u51b3\u56db\u4ef6\u4e8b\uff1a\u600e\u4e48\u52a0 Header\u3001\u600e\u4e48\u9002\u914d Linear\/Grid\/Staggered\u3001\u6709 Header \u65f6\u5206\u5272\u7ebf\u600e\u4e48\u753b\u3001\u600e\u4e48\u5c01\u88c5\u5f97\u5c11\u5199\u6837\u677f\u3002<\/p>\n

\u770b\u5b8c Header\uff0cFooter \u662f\u540c\u4e00\u5957 viewType \u601d\u8def\u3002\u622a\u56fe\u548c\u5b8c\u6574 Adapter \u4ee3\u7801\u90fd\u6309\u539f\u6587\u4fdd\u7559\u3002<\/p>\n<\/blockquote>\n

<\/p>\n\n\n\n\n\n\n\n\n\n
\u573a\u666f<\/th>\n\u505a\u6cd5<\/th>\n<\/tr>\n<\/thead>\n
LinearLayoutManager<\/td>\nAdapter \u589e\u52a0 Header viewType\uff0cposition 0 \u8fd4\u56de Header<\/td>\n<\/tr>\n
GridLayoutManager<\/td>\nSpanSizeLookup\uff1aHeader \u7684 spanSize = spanCount<\/td>\n<\/tr>\n
StaggeredGridLayoutManager<\/td>\nLayoutParams.setFullSpan(true)<\/td>\n<\/tr>\n
\u5206\u5272\u7ebf<\/td>\nItemDecoration \u91cc\u8df3\u8fc7 Header \u4f4d\u7f6e<\/td>\n<\/tr>\n
\u5c01\u88c5<\/td>\nHeaderWrapperAdapter \u5305\u4f4f\u4e1a\u52a1 Adapter<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u8bdd\u8bf4\u5728\u8fd9\u4e48\u591a\u65b0\u63a7\u4ef6\u4e2d\u4e3a\u4f55RecyclerView\u5907\u53d7\u5f00\u53d1\u8005\u7684\u559c\u7231\uff1f\u8fd9\u8fd8\u662f\u56e0\u4e3a\u5728Android\u53d1\u5c55\u5230\u4eca\u5929\u57fa\u672c\u4e0a\u8fd8\u6ca1\u6709\u50cfRecyclerView\u8fd9\u4e48\u7075\u6d3b\u7684\u4e00\u4e2a\u73a9\u610f\uff0c\u9274\u4e8e\u4ed6\u7684\u7075\u6d3b\u4ee5\u53ca\u5f3a\u5927\uff0c\u5f88\u591a\u4eba(\u5305\u62ec\u6211)\u5df2\u7ecf\u5f00\u59cb\u629b\u5f03ListView\u548cGridView\u8f6c\u4e3aRecyclerView\u4e86\uff0c\u518d\u4f7f\u7528\u8fc7RecyclerView\u548c\u88ab\u5584\u53d8\u7684\u9700\u6c42\u6298\u78e8\u540e\uff0c\u6211\u76f8\u4fe1\u4f1a\u6709\u8d8a\u6765\u8d8a\u591a\u7684\u4eba\u8f6c\u5230RecyclerView\u7684\u4f7f\u7528\u4e0a\u3002<\/p>\n

\n

\u95ee\u9898<\/span><\/h2>\n

\u597d\u4e86\uff0c\u5e9f\u8bdd\u4e0d\u591a\u8bf4\u4e86\uff0c\u8fd9\u7bc7\u535a\u5ba2\u6211\u4eec\u8981\u89e3\u51b3\u7684\u95ee\u9898\u6709\uff1a<\/p>\n

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    \n
  1. \n
    \u5982\u4f55\u4e3aRecyclerView\u6dfb\u52a0Header<\/section>\n<\/li>\n
  2. \n
    \u5982\u4f55\u8ba9Header\u9002\u914d\u5404\u79cdLayoutManager<\/section>\n<\/li>\n
  3. \n
    \u5728\u6709Header\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u7684\u5206\u5272\u7ebf\u8be5\u600e\u4e48\u753b<\/section>\n<\/li>\n
  4. \n
    \u4f5c\u4e3a\u4e00\u4e2a\u61d2\u60f0\u7684\u7a0b\u5e8f\u5458\uff0c\u5982\u4f55\u5c06\u8fd9\u4e9b\u505a\u5230\u6700\u7b80\u4fbf<\/section>\n<\/li>\n<\/ol>\n<\/blockquote>\n
    \n

    \u5982\u679c\u4e3aRecyclerView\u6dfb\u52a0Header<\/span><\/h2>\n

    \u5927\u5bb6\u5728\u4f7f\u7528ListView<\/code>\u7684\u65f6\u5019\u53ef\u4ee5\u5f88\u8f7b\u677e\u7684\u6dfb\u52a0headers\uff0c \u4f46\u662f\u4e0d\u77e5\u9053\u5927\u5bb6\u53d1\u73b0\u6ca1\u6709\uff0cRecyclerView<\/code>\u548c\u5404\u79cdLayoutManager<\/code>\u90fd\u6ca1\u6709\u54ea\u4e2a\u65b9\u6cd5\u662f\u4e3a\u6dfb\u52a0header\u800c\u8bbe\u7acb\u7684\uff0c\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u5c31\u5f00\u59cb\u601d\u8003\u5982\u4f55\u4e3aRecyclerView<\/code>\u6dfb\u52a0header\u4e86\u3002 \u8fd9\u91cc\u6211\u4eec\u7684\u89e3\u51b3\u65b9\u6848\u548c\u7f51\u4e0a\u4f60\u80fd\u641c\u5230\u7684\u5927\u591a\u6570\u65b9\u6848\u4e00\u6837\uff0c\u662f\u901a\u8fc7\u63a7\u5236Adapter<\/code>\u7684itemType<\/code>\u6765\u8bbe\u7f6e\u7684\uff0c\u601d\u8def\u5c31\u662f\u6839\u636e\u4e0d\u540c\u7684itemType\u53bb\u52a0\u8f7d\u4e0d\u540c\u7684\u5e03\u5c40<\/strong>\u3002<\/p>\n

    \/**\n * Created by qibin on 2015\/11\/5.\n *\/<\/span>\npublic<\/span> class<\/span> MyAdapter<\/span> extends<\/span> RecyclerView<\/span>.Adapter<\/span><RecyclerView<\/span>.ViewHolder<\/span>> {<\/span>\n\n    public<\/span> static<\/span> final<\/span> int<\/span> TYPE_HEADER = 0<\/span>;\n    public<\/span> static<\/span> final<\/span> int<\/span> TYPE_NORMAL = 1<\/span>;\n\n    private<\/span> ArrayList<String> mDatas = new<\/span> ArrayList<>();\n\n    private<\/span> View mHeaderView;\n\n    private<\/span> OnItemClickListener mListener;\n\n    public<\/span> void<\/span> setOnItemClickListener<\/span>(OnItemClickListener li) {\n        mListener = li;\n    }\n\n    public<\/span> void<\/span> setHeaderView<\/span>(View headerView) {\n        mHeaderView = headerView;\n        notifyItemInserted(0<\/span>);\n    }\n\n    public<\/span> View getHeaderView<\/span>() {\n        return<\/span> mHeaderView;\n    }\n\n    public<\/span> void<\/span> addDatas<\/span>(ArrayList<String> datas) {\n        mDatas.addAll(datas);\n        notifyDataSetChanged();\n    }\n\n    @Override<\/span>\n    public<\/span> int<\/span> getItemViewType<\/span>(int<\/span> position) {\n        if<\/span>(mHeaderView == null<\/span>) return<\/span> TYPE_NORMAL;\n        if<\/span>(position == 0<\/span>) return<\/span> TYPE_HEADER;\n        return<\/span> TYPE_NORMAL;\n    }\n\n    @Override<\/span>\n    public<\/span> RecyclerView.ViewHolder onCreateViewHolder<\/span>(ViewGroup parent, int<\/span> viewType) {\n        if<\/span>(mHeaderView != null<\/span> && viewType == TYPE_HEADER) return<\/span> new<\/span> Holder(mHeaderView);\n        View layout = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false<\/span>);\n        return<\/span> new<\/span> Holder(layout);\n    }\n\n    @Override<\/span>\n    public<\/span> void<\/span> onBindViewHolder<\/span>(RecyclerView.ViewHolder viewHolder, int<\/span> position) {\n        if<\/span>(getItemViewType(position) == TYPE_HEADER) return<\/span>;\n\n        final<\/span> int<\/span> pos = getRealPosition(viewHolder);\n        final<\/span> String data = mDatas.get(pos);\n        if<\/span>(viewHolder instanceof<\/span> Holder) {\n            ((Holder) viewHolder).text.setText(data);\n            if<\/span>(mListener == null<\/span>) return<\/span>;\n            viewHolder.itemView.setOnClickListener(new<\/span> View.OnClickListener() {\n                @Override<\/span>\n                public<\/span> void<\/span> onClick<\/span>(View v) {\n                    mListener.onItemClick(pos, data);\n                }\n            });\n        }\n    }\n\n    public<\/span> int<\/span> getRealPosition<\/span>(RecyclerView.ViewHolder holder) {\n        int<\/span> position = holder.getLayoutPosition();\n        return<\/span> mHeaderView == null<\/span> ? position : position - 1<\/span>;\n    }\n\n    @Override<\/span>\n    public<\/span> int<\/span> getItemCount<\/span>() {\n        return<\/span> mHeaderView == null<\/span> ? mDatas.size() : mDatas.size() + 1<\/span>;\n    }\n\n    class Holder extends RecyclerView.ViewHolder {\n\n        TextView text;\n\n        public<\/span> Holder<\/span>(View itemView) {\n            super<\/span>(itemView);\n            if<\/span>(itemView == mHeaderView) return<\/span>;\n            text = (TextView) itemView.findViewById(R.id.text);\n        }\n    }\n\n    interface OnItemClickListener {\n        void<\/span> onItemClick(int<\/span> position, String data);\n    }\n}<\/code><\/pre>\n
    \u8fd9\u91cc\u6211\u4eec\u91cd\u5199\u4e86getItemViewType<\/code>\u65b9\u6cd5\uff0c\u5e76\u6839\u636e\u4f4d\u7f6e\u6765\u8fd4\u56de\u4e0d\u540c\u7684type\uff0c\u8fd9\u4e2atype\u662f\u6211\u4eec\u9884\u5148\u5546\u5b9a\u597d\u7684\u5e38\u91cf\uff0c\u63a5\u5728onCreateViewHolder<\/code>\u65b9\u6cd5\u4e2d\u6765\u5224\u65aditemType\uff0c\u5982\u679c\u662fheader\uff0c\u5219\u8fd4\u56de\u6211\u4eec\u8bbe\u7f6e\u7684headerView\uff0c\u5426\u5219\u6b63\u5e38\u52a0\u8f7ditem\u5e03\u5c40\uff0c\u76f8\u4fe1\u5927\u5bb6\u5bf9\u4e8e\u4e0a\u9762\u7684\u4ee3\u7801\u4e0d\u4f1a\u6709\u4efb\u4f55\u7591\u95ee\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u5c31\u5728Activity\u4e2d\u7528\u4e00\u4e0b\u8bd5\u8bd5\u770b\uff0c<\/p>\n
    @Override<\/span>\nprotected<\/span> void<\/span> onCreate<\/span>(Bundle savedInstanceState) {\n    super<\/span>.onCreate(savedInstanceState);\n    setContentView(R.layout.activity_main);\n\n    mRecyclerView = (RecyclerView) findViewById(R.id.list);\n    mLayoutManager = new<\/span> LinearLayoutManager(this<\/span>, LinearLayoutManager.VERTICAL, false<\/span>);\n    mRecyclerView.setLayoutManager(mLayoutManager);\n    mRecyclerView.setItemAnimator(new<\/span> DefaultItemAnimator());\n\n    mAdapter = new<\/span> MyAdapter();\n    mRecyclerView.setAdapter(mAdapter);\n    mAdapter.addDatas(generateData());\n    setHeader(mRecyclerView);\n    mAdapter.setOnItemClickListener(new<\/span> MyAdapter.OnItemClickListener() {\n        @Override<\/span>\n        public<\/span> void<\/span> onItemClick<\/span>(int<\/span> position, String data) {\n            Toast.makeText(MainActivity.this<\/span>, data, Toast.LENGTH_SHORT).show();\n        }\n    });\n}\n\nprivate<\/span> void<\/span> setHeader<\/span>(RecyclerView view) {\n    View header = LayoutInflater.from(this<\/span>).inflate(R.layout.header, view, false<\/span>);\n    mAdapter.setHeaderView(header);\n}<\/code><\/pre>\n
    \u8fd9\u91ccLayoutManager<\/code>\u6211\u4eec\u4f7f\u7528\u4e86LinearLayoutManager<\/code>\uff0c\u5e76\u4e14\u7ed9Adapter<\/code>\u8bbe\u7f6e\u4e86\u4e00\u4e2aheader\uff0c\u8fd0\u884c\u4e00\u4e0b \u770b\u770b\u6548\u679c\uff1a<\/p>\n
    \"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200331114905\"<\/a><\/p>\n
    \u6069\uff0c\u8fd8\u4e0d\u9519\uff0citem\u7684\u70b9\u51fb\u4e8b\u4ef6\u4e5f\u5f88\u5b8c\u7f8e\uff0c\u90a3\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06LayoutManager<\/code>\u6362\u6210GridLayoutManager<\/code>\u770b\u770b\u548b\u6837\u3002<\/p>\n
    \n
    \u4e3aGridLayoutManager\u6dfb\u52a0header<\/span><\/h2>\n
    \/\/  mLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);<\/span>\nmLayoutManager = new<\/span> GridLayoutManager(this<\/span>, 2<\/span>);<\/code><\/pre>\n
    \u54ce\u54df\uff0c\u6211\u7684\u5c0f\u5fc3\u810f\u554a\uff0c\u5feb\u53d7\u4e0d\u4e86\u4e86\uff0c\u8fd9\u662f\u4ec0\u4e48\u73a9\u610f\uff0c\u6211\u4eec\u7684header\u7adf\u7136\u4f5c\u4e3a\u4e00\u4e2acell\u51fa\u73b0\u5728\u4e86\u754c\u9762\u4e0a\uff0c\u8fd9\u5b8c\u5168\u4e0d\u662f\u6211\u4eec\u60f3\u8981\u7684\u6548\u679c\u554a\uff01 \u51b7\u9759\u4e0b\u6765\u60f3\u60f3\uff0c\u80af\u5b9a\u4f1a\u6709\u89e3\u51b3\u65b9\u6cd5\u7684\u5427\u3002\u8fd9\u65f6\u5019\u6211\u4eec\u5c31\u8be5\u5f15\u5165\u4e00\u4e2a\u4e0d\u592a\u5e38\u7528\u7684\u65b9\u6cd5\u4e86\uff1a<\/p>\n
    gridManager.setSpanSizeLookup(new<\/span> GridLayoutManager.SpanSizeLookup() {\n    @Override<\/span>\n    public<\/span> int<\/span> getSpanSize<\/span>(int<\/span> position) {\n        return<\/span> getItemViewType(position) == TYPE_HEADER\n                ? gridManager.getSpanCount() : 1<\/span>;\n    }\n});<\/code><\/pre>\n
    \u6211\u4eec\u89e3\u91ca\u4e00\u4e0b\u8fd9\u6bb5\u4ee3\u7801\uff0c\u9996\u5148\u6211\u4eec\u8bbe\u7f6e\u4e86\u4e00\u4e2aSpanSizeLookup<\/code>\uff0c\u8fd9\u4e2a\u7c7b\u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff0c\u800c\u4e14\u4ec5\u6709\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5getSpanSize<\/code>\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u51b3\u5b9a\u4e86\u6211\u4eec\u6bcf\u4e2aposition\u4e0a\u7684item\u5360\u636e\u7684\u5355\u5143\u683c\u4e2a\u6570\uff0c\u800c\u6211\u4eec\u8fd9\u6bb5\u4ee3\u7801\u7efc\u5408\u4e0a\u9762\u4e3aGridLayoutManager<\/code>\u8bbe\u7f6e\u7684\u6bcf\u884c\u7684\u4e2a\u6570\u6765\u89e3\u91ca\u7684\u8bdd\uff0c \u5c31\u662f\u5f53\u524d\u4f4d\u7f6e\u662fheader\u7684\u4f4d\u7f6e\uff0c\u90a3\u4e48\u8be5item\u5360\u636e2\u4e2a\u5355\u5143\u683c\uff0c\u6b63\u5e38\u60c5\u51b5\u4e0b\u5360\u636e1\u4e2a\u5355\u5143\u683c<\/strong>\u3002\u90a3\u8fd9\u6bb5\u4ee3\u7801\u653e\u54ea\u5462\uff1f \u4e3a\u4e86\u4ee5\u540e\u7684\u5c01\u88c5\uff0c\u6211\u4eec\u8fd8\u662f\u5728Adapter<\/code>\u4e2d\u627e\u65b9\u6cd5\u653e\u5427\u3002 \u6211\u4eec\u5728Adapter<\/code>\u4e2d\u518d\u91cd\u5199\u4e00\u4e2a\u65b9\u6cd5onAttachedToRecyclerView<\/code>\uff0c<\/p>\n
    @Override<\/span>\npublic<\/span> void<\/span> onAttachedToRecyclerView<\/span>(RecyclerView recyclerView) {\n    super<\/span>.onAttachedToRecyclerView(recyclerView);\n    RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();\n    if<\/span>(manager instanceof<\/span> GridLayoutManager) {\n        final<\/span> GridLayoutManager gridManager = ((GridLayoutManager) manager);\n        gridManager.setSpanSizeLookup(new<\/span> GridLayoutManager.SpanSizeLookup() {\n            @Override<\/span>\n            public<\/span> int<\/span> getSpanSize<\/span>(int<\/span> position) {\n                return<\/span> getItemViewType(position) == TYPE_HEADER\n                        ? gridManager.getSpanCount() : 1<\/span>;\n            }\n        });\n    }\n}<\/code><\/pre>\n
    \u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u518d\u6765\u770b\u4e00\u4e0b\u6548\u679c\uff0c<\/p>\n
    \"\"<\/p>\n
    \u6069\uff0c\u8fd9\u6b21\u8fbe\u5230\u6211\u4eec\u7684\u8981\u6c42\u4e86\uff0c\u4e0d\u8fc7\u5bf9\u4e8eStaggeredGridLayoutManager<\/code>\u6211\u4eec\u8fd8\u6ca1\u505a\u5904\u7406\uff0c\u800c\u4e14\u6211\u4eec\u8fd8\u53d1\u73b0StaggeredGridLayoutManager<\/code>\u4e2d\u5e76\u6ca1\u6709\u50cfGridLayoutManager<\/code>\u4e2d\u8fd9\u6837\u7684\u65b9\u6cd5\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5355\u72ec\u4e3aStaggeredGridLayoutManager<\/code>\u5355\u72ec\u5904\u7406\u4e00\u4e0b\u3002<\/p>\n
    \n
    \u4e3aStaggeredGridLayoutManager\u6dfb\u52a0header<\/span><\/h2>\n
    \u6211\u4eec\u7ee7\u7eed\u91cd\u5199Adapter<\/code>\u4e2d\u53e6\u5916\u4e00\u4e2a\u65b9\u6cd5\u3002<\/p>\n
    @Override<\/span>\npublic<\/span> void<\/span> onViewAttachedToWindow<\/span>(RecyclerView.ViewHolder holder) {\n    super<\/span>.onViewAttachedToWindow(holder);\n    ViewGroup.LayoutParams lp = holder.itemView.getLayoutParams();\n    if<\/span>(lp != null<\/span>\n            && lp instanceof<\/span> StaggeredGridLayoutManager.LayoutParams) {\n            StaggeredGridLayoutManager.LayoutParams p = (StaggeredGridLayoutManager.LayoutParams) lp;\n            p.setFullSpan(holder.getLayoutPosition() == 0<\/span>);\n    }\n}<\/code><\/pre>\n
    \u8fd9\u91cc\u7684\u5904\u7406\u65b9\u5f0f\u662f\u7528\u901a\u8fc7LayoutParams<\/code>\uff0c\u800c\u4e14\u8fd9\u91cc\u66f4\u7b80\u5355\uff0cStaggeredGridLayoutManager.LayoutParams<\/code>\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u4e00\u4e2asetFullSpan<\/code>\u65b9\u6cd5\u6765\u8bbe\u7f6e\u5360\u9886\u5168\u90e8\u7a7a\u95f4\uff0c\u597d\u5f00\u5fc3\uff0c\u770b\u4e00\u4e0bStaggeredGridLayoutManager<\/code>\u7684\u6548\u679c\uff0c<\/p>\n
    \"\"<\/p>\n
    \u554a\uff0c \u600e\u4e48\u548c\u4e0a\u9762\u7684\u6548\u679c\u4e00\u6837\uff1f \u5f88\u7b80\u5355\u561b\uff0c\u6211\u4eec\u7684item\u90fd\u662f\u7b49\u9ad8\u7684\u3002<\/p>\n
    \n
    \u5904\u7406\u5206\u9694\u7b26<\/span><\/h2>\n
    \u8fd9\u662f\u6211\u4eec\u5f00\u5f00\u5fc3\u5fc3\u7684\u7ee7\u7eed\u5199\u4ee3\u7801\uff0c\u5e76\u4e14\u4e3a\u6211\u4eec\u7684item\u6dfb\u52a0\u4e86\u5206\u9694\u7b26\uff0c\u5206\u9694\u7b26\u6211\u8fd8\u662f\u7528\u7684\u7fd4\u54e5\u5199\u7684\u90a3\u4e2a\uff0c\u6bd5\u7adf\u7fd4\u54e5\u5199\u7684\u592a\u597d\u4e86\uff0c\u800c\u4e14\u6211\u4eec\u6ca1\u6709\u5fc5\u8981\u91cd\u590d\u9020\u8f6e\u5b50\uff0c\u4e0d\u8fc7\u8fd9\u65f6\u5019\u95ee\u9898\u51fa\u73b0\u4e86\uff0c\u76f8\u4fe1\u4f60\u4e5f\u80af\u5b9a\u80fd\u731c\u5230\u5e94\u8be5\u4f1a\u51fa\u73b0\u95ee\u9898\u4e86\uff0c\u56e0\u4e3a\u4e0d\u7ba1\u6211\u4eec\u600e\u4e48\u5904\u7406\uff0cheader\u5bf9\u4e8eRecyclerView<\/code>\u6765\u8bf4\u8fd8\u662f\u4e00\u4e2a\u666e\u666e\u901a\u901a\u7684item\uff0c\u8fd9\u65f6\u5019\u6211\u4eec\u6dfb\u52a0\u5206\u5272\u7ebf\uff0c\u80af\u5b9a\u4e5f\u4f1a\u5bf9header\u4ea7\u751f\u5f71\u54cd\uff0c\u90a3\u4e0b\u9762\uff0c\u6211\u4eec\u518d\u6765\u5bf9\u7fd4\u54e5\u7684\u5206\u5272\u7ebf\u6539\u9020\u4e00\u4e0b\u5427\u3002<\/p>\n
    public<\/span> class<\/span> GridItemDecoration<\/span> extends<\/span> RecyclerView<\/span>.ItemDecoration<\/span> {<\/span>\n    private<\/span> static<\/span> final<\/span> int<\/span>[] ATTRS = new<\/span> int<\/span>[]{android.R.attr.listDivider};\n    private<\/span> Drawable mDivider;\n    private<\/span> boolean<\/span> hasHeader;\n\n    public<\/span> GridItemDecoration<\/span>(Context context) {\n        final<\/span> TypedArray a = context.obtainStyledAttributes(ATTRS);\n        mDivider = a.getDrawable(0<\/span>);\n        a.recycle();\n    }\n\n    public<\/span> GridItemDecoration<\/span>(Context context, boolean<\/span> header) {\n        this<\/span>(context);\n        hasHeader = header;\n    }\n\n    ...\n\n    @Override<\/span>\n    public<\/span> void<\/span> getItemOffsets<\/span>(Rect outRect, View view,\n                               RecyclerView parent, RecyclerView.State state) {\n        int<\/span> position = parent.getChildAdapterPosition(view);\n        int<\/span> spanCount = getSpanCount(parent);\n        int<\/span> childCount = parent.getAdapter().getItemCount();\n        int<\/span> pos = position;\n\n        if<\/span>(hasHeader) {\n            if<\/span>(position == 0<\/span>) {\n                outRect.set(0<\/span>, 0<\/span>, 0<\/span>, mDivider.getIntrinsicHeight());\n                return<\/span>;\n            } else<\/span> {\n                pos = position - 1<\/span>;\n            }\n        }\n\n        if<\/span> (isLastColum(parent, pos, spanCount, childCount)) {\n            outRect.set(0<\/span>, 0<\/span>, mDivider.getIntrinsicWidth(), mDivider.getIntrinsicHeight());\n        } else<\/span> {\n            outRect.set(0<\/span>, 0<\/span>, mDivider.getIntrinsicWidth(),\n                    mDivider.getIntrinsicHeight());\n        }\n    }\n}<\/code><\/pre>\n
    \u6539\u9020\u7684\u5730\u65b9\u662f\u83b7\u53d6\u504f\u79fb\u91cf\u7684\u65b9\u6cd5\u6211\u4eec\u6362\u4e86\u4e00\u4e2a\uff0c\u56e0\u4e3a\u539f\u6765\u7684\u90a3\u4e2a\u5df2\u7ecf\u8fc7\u65f6\u4e86\uff0c\u800c\u4e14\uff0c\u8fd9\u91cc\u6211\u4eec\u8fd8\u52a0\u4e86\u4e00\u4e2aboolean\u7c7b\u578b\u7684hasHeader<\/code>\u53d8\u91cf\u6765\u8868\u793a\u662f\u4e0d\u662f\u6709header\uff0c\u5982\u679chasHeader\u5e76\u4e14position\u4e3a0\uff0c\u90a3\u4e48\u6211\u4eec\u4ec5\u4ec5\u7ed8\u5236\u5e95\u90e8\u7684\u5206\u5272\u7ebf\uff0c\u5176\u4ed6\u7684\u5730\u65b9\u4e0d\u7ed8\u5236\uff0c\u5728\u6709header\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5c06position\u51cf1\uff0c\u56e0\u4e3a\u6211\u4eec\u8ba4\u4e3a\u7684\u7b2c1\u4e2aitem\u5176\u5b9e\u662f\u7b2c2\u4e2a\u3002\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u518d\u6765\u770b\u770b\u6709\u5206\u5272\u7ebf\u7684\u6548\u679c\u3002<\/p>\n
    \"\"<\/p>\n
    \u770b\u6765\u6211\u4eec\u7684\u60f3\u6cd5\u662f\u5bf9\u7684\uff0cheader\u90e8\u5206\u9664\u4e86\u5e95\u90e8\u6709\u4e00\u4e2a\u5206\u5272\u7ebf\u5916\uff0c\u5e76\u6ca1\u6709\u5176\u4ed6\u7684\u5206\u5272\u7ebf\uff0c\u8fd9\u4e5f\u5b8c\u5168\u7b26\u5408\u6211\u4eec\u7684\u9700\u6c42\u3002<\/p>\n
    \n
    \u5c01\u88c5<\/span><\/h2>\n
    \u8fd9\u4e0b\u597d\u4e86\uff0c\u57fa\u672c\u4e0a\u5b8c\u7f8e\u7684\u5904\u7406\u597d\u4e86\uff0c\u53ef\u662f\u96be\u9053\u6211\u4eec\u5bf9\u4e8e\u4e0d\u540c\u7684Adapter<\/code>\u90fd\u9700\u8981\u5199\u90a3\u4e48\u591a\u4ee3\u7801\u5417\uff1f \u5bf9\u4e8e\u4e00\u4e2a\u61d2\u7a0b\u5e8f\u5458\u6765\u8bf4\uff0c\u8fd9\u80af\u5b9a\u662f\u4e00\u4e2a\u53ef\u6015\u7684\u4e8b\u60c5\uff0c\u6240\u4ee5\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5bf9\u6211\u4eec\u7684Adapter<\/code>\u8fdb\u884c\u5c01\u88c5\uff0c\u76ee\u7684\u5c31\u662f\u53ef\u4ee5\u8f7b\u8f7b\u677e\u677e\u7684\u5199\u4ee3\u7801\uff0c<\/p>\n
    \/**\n * Created by qibin on 2015\/11\/5.\n *\/<\/span>\npublic<\/span> abstract<\/span> class<\/span> BaseRecyclerAdapter<\/span><T<\/span>> extends<\/span> RecyclerView<\/span>.Adapter<\/span><RecyclerView<\/span>.ViewHolder<\/span>> {<\/span>\n\n    public<\/span> static<\/span> final<\/span> int<\/span> TYPE_HEADER = 0<\/span>;\n    public<\/span> static<\/span> final<\/span> int<\/span> TYPE_NORMAL = 1<\/span>;\n\n    private<\/span> ArrayList<T> mDatas = new<\/span> ArrayList<>();\n\n    private<\/span> View mHeaderView;\n\n    private<\/span> OnItemClickListener mListener;\n\n    public<\/span> void<\/span> setOnItemClickListener<\/span>(OnItemClickListener li) {\n        mListener = li;\n    }\n\n    public<\/span> void<\/span> setHeaderView<\/span>(View headerView) {\n        mHeaderView = headerView;\n        notifyItemInserted(0<\/span>);\n    }\n\n    public<\/span> View getHeaderView<\/span>() {\n        return<\/span> mHeaderView;\n    }\n\n    public<\/span> void<\/span> addDatas<\/span>(ArrayList<T> datas) {\n        mDatas.addAll(datas);\n        notifyDataSetChanged();\n    }\n\n    @Override<\/span>\n    public<\/span> int<\/span> getItemViewType<\/span>(int<\/span> position) {\n        if<\/span>(mHeaderView == null<\/span>) return<\/span> TYPE_NORMAL;\n        if<\/span>(position == 0<\/span>) return<\/span> TYPE_HEADER;\n        return<\/span> TYPE_NORMAL;\n    }\n\n    @Override<\/span>\n    public<\/span> RecyclerView.ViewHolder onCreateViewHolder<\/span>(ViewGroup parent, final<\/span> int<\/span> viewType) {\n        if<\/span>(mHeaderView != null<\/span> && viewType == TYPE_HEADER) return<\/span> new<\/span> Holder(mHeaderView);\n        return<\/span> onCreate(parent, viewType);\n    }\n\n\n    @Override<\/span>\n    public<\/span> void<\/span> onBindViewHolder<\/span>(RecyclerView.ViewHolder viewHolder, int<\/span> position) {\n        if<\/span>(getItemViewType(position) == TYPE_HEADER) return<\/span>;\n\n        final<\/span> int<\/span> pos = getRealPosition(viewHolder);\n        final<\/span> T data = mDatas.get(pos);\n        onBind(viewHolder, pos, data);\n\n        if<\/span>(mListener != null<\/span>) {\n            viewHolder.itemView.setOnClickListener(new<\/span> View.OnClickListener() {\n                @Override<\/span>\n                public<\/span> void<\/span> onClick<\/span>(View v) {\n                    mListener.onItemClick(pos, data);\n                }\n            });\n        }\n    }\n\n    @Override<\/span>\n    public<\/span> void<\/span> onAttachedToRecyclerView<\/span>(RecyclerView recyclerView) {\n        super<\/span>.onAttachedToRecyclerView(recyclerView);\n\n        RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();\n        if<\/span>(manager instanceof<\/span> GridLayoutManager) {\n            final<\/span> GridLayoutManager gridManager = ((GridLayoutManager) manager);\n            gridManager.setSpanSizeLookup(new<\/span> GridLayoutManager.SpanSizeLookup() {\n                @Override<\/span>\n                public<\/span> int<\/span> getSpanSize<\/span>(int<\/span> position) {\n                    return<\/span> getItemViewType(position) == TYPE_HEADER\n                            ? gridManager.getSpanCount() : 1<\/span>;\n                }\n            });\n        }\n    }\n\n    @Override<\/span>\n    public<\/span> void<\/span> onViewAttachedToWindow<\/span>(RecyclerView.ViewHolder holder) {\n        super<\/span>.onViewAttachedToWindow(holder);\n        ViewGroup.LayoutParams lp = holder.itemView.getLayoutParams();\n        if<\/span>(lp != null<\/span>\n                && lp instanceof<\/span> StaggeredGridLayoutManager.LayoutParams) {\n                        StaggeredGridLayoutManager.LayoutParams p = (StaggeredGridLayoutManager.LayoutParams) lp;\n            p.setFullSpan(holder.getLayoutPosition() == 0<\/span>);\n        }\n    }\n\n    public<\/span> int<\/span> getRealPosition<\/span>(RecyclerView.ViewHolder holder) {\n        int<\/span> position = holder.getLayoutPosition();\n        return<\/span> mHeaderView == null<\/span> ? position : position - 1<\/span>;\n    }\n\n    @Override<\/span>\n    public<\/span> int<\/span> getItemCount<\/span>() {\n        return<\/span> mHeaderView == null<\/span> ? mDatas.size() : mDatas.size() + 1<\/span>;\n    }\n\n    public<\/span> abstract<\/span> RecyclerView.ViewHolder onCreate<\/span>(ViewGroup parent, final<\/span> int<\/span> viewType);\n    public<\/span> abstract<\/span> void<\/span> onBind<\/span>(RecyclerView.ViewHolder viewHolder, int<\/span> RealPosition, T data);\n\n    public<\/span> class<\/span> Holder<\/span> extends<\/span> RecyclerView<\/span>.ViewHolder<\/span> {<\/span>\n        public<\/span> Holder<\/span>(View itemView) {\n            super<\/span>(itemView);\n        }\n    }\n\n    public<\/span> interface<\/span> OnItemClickListener<\/span><T<\/span>> {<\/span>\n        void<\/span> onItemClick(int<\/span> position, T data);\n    }\n}<\/code><\/pre>\n
    \u6211\u4eec\u5c06BaseRecyclerAdapter<\/code>\u62bd\u8c61\u8d77\u6765\uff0c\u5e76\u4e14\u63d0\u4f9b\u4e24\u4e2a\u62bd\u8c61\u65b9\u6cd5onCreate<\/code>\u548conBind<\/code>\u7528\u6765\u521b\u5efaholder\u548c\u7ed1\u5b9a\u6570\u636e\uff0c\u800c\u5bf9\u4e8eheader\u505a\u7684\u4e00\u7cfb\u5217\u5de5\u4f5c\uff0c\u6211\u4eec\u90fd\u653e\u5230\u4e86BaseRecyclerAdapter<\/code>\u4e2d\uff0c\u800c\u7ee7\u627fBaseRecyclerAdapter<\/code>\u540e\uff0c\u6211\u4eec\u4ec5\u4ec5\u5173\u5fc3\u6211\u4eec\u7684holder\u600e\u4e48\u521b\u5efa\u548c\u6570\u636e\u600e\u4e48\u7ed1\u5b9a\u5c31ok\u3002\u4f8b\u5982\u4e0b\u9762\u4ee3\u7801\uff1a<\/p>\n
    \/**\n * Created by qibin on 2015\/11\/7.\n *\/<\/span>\npublic<\/span> class<\/span> MyAdapter<\/span> extends<\/span> BaseRecyclerAdapter<\/span><String<\/span>> {<\/span>\n\n    @Override<\/span>\n    public<\/span> RecyclerView.ViewHolder onCreate<\/span>(ViewGroup parent, int<\/span> viewType) {\n        View layout = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false<\/span>);\n        return<\/span> new<\/span> MyHolder(layout);\n    }\n\n    @Override<\/span>\n    public<\/span> void<\/span> onBind<\/span>(RecyclerView.ViewHolder viewHolder, int<\/span> RealPosition, String data) {\n        if<\/span>(viewHolder instanceof<\/span> MyHolder) {\n            ((MyHolder) viewHolder).text.setText(data);\n        }\n    }\n\n    class MyHolder extends BaseRecyclerAdapter.Holder {\n        TextView text;\n        public<\/span> MyHolder<\/span>(View itemView) {\n            super<\/span>(itemView);\n            text = (TextView) itemView.findViewById(R.id.text);\n        }\n    }\n}<\/code><\/pre>\n
    \u8fd9\u6837\u6211\u4eec\u518d\u7528\u8d77\u6765\u5c31\u7b80\u5355\u591a\u4e86\uff0c\u5bf9\u4e8e\u8fd9\u6837\u7684\u5c01\u88c5\uff0c\u6211\u4eec\u8fd8\u7b97\u6ee1\u610f\uff0c\u518d\u505a\u5b8c\u6dfb\u52a0header\u540e\uff0c\u76f8\u4fe1\u5927\u5bb6\u5bf9\u4e8efooter\u4e5f\u6709\u60f3\u6cd5\u4e86\uff0c\u6709\u60f3\u6cd5\u5c31\u5b9e\u73b0\u5b83\u5427\uff0c\u6269\u5c55\u4e00\u4e0bBaseRecyclerAdapter<\/code>\u5c31ok\u5566\u3002<\/p>\n
    \u597d\u4e86\uff0c\u8fd9\u7bc7\u535a\u5ba2\u5c31\u5230\u8fd9\u91cc\u5427\uff0c\u6700\u540e\u662f\u672c\u6587\u4ee3\u7801\u7684\u4e0b\u8f7d\u3002<\/p>\n
    \u4ee3\u7801\u4e0b\u8f7d\uff0c\u6233\u8fd9\u91cc<\/a><\/p>\n
    \u539f\u6587\u51fa\u5904:RecyclerView\u6dfb\u52a0Header\u7684\u6b63\u786e\u65b9\u5f0f<\/a><\/p>\n
    \n
    \u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u7528\u591a viewType \u628a Header \u505a\u6210 position 0\uff1bGrid \u7528 SpanSizeLookup \u5360\u6ee1\u4e00\u884c\uff0c\u7011\u5e03\u6d41 setFullSpan\uff0c\u5206\u5272\u7ebf\u8df3\u8fc7 Header\uff0c\u6700\u540e\u5305\u4e00\u5c42 HeaderWrapperAdapter\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
    ListView \u6709\u73b0\u6210\u7684 addHeaderView\uff0cRecyclerView \u548c\u5404 LayoutManag […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[75],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1193"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1193"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1193\/revisions"}],"predecessor-version":[{"id":2531,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1193\/revisions\/2531"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
    \"\u256c\u0432\u2568\u253c\u255c\u256a\u2550\u255d_20200331114941\"<\/a><\/p>\n