Recyclerview在项目中由浅到深的使用

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最简单的Recyclerview

Recyclerview跟ListView一样，也需要写适配器，只是，它的适配器跟ListView有点差别：

public class SimpleAdapter extends RecyclerView.Adapter<SimpleAdapter.ViewHolder> {    private Context context;    private List<DataBean.ResultBean.FutureBean> list = new ArrayList<>();    public SimpleAdapter(Context context, List<DataBean.ResultBean.FutureBean> list) {        this.context = context;        this.list = list;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(context).inflate(R.layout.item_rv_simple, parent, false);        ViewHolder viewHolder = new ViewHolder(view);        return viewHolder;    }    @Override    public void onBindViewHolder(ViewHolder holder, int position) {        DataBean.ResultBean.FutureBean futureBean = list.get(position);        holder.tvTime.setText(futureBean.getDate() + "   " + futureBean.getWeek());        holder.tvWind.setText("风力：" + futureBean.getWind());        holder.tvTemperature.setText("温度：" + futureBean.getTemperature());        holder.tvWeather.setText("天气："+futureBean.getWeather());    }    @Override    public int getItemCount() {        return list.size();    }    static class ViewHolder extends RecyclerView.ViewHolder {        @Bind(R.id.tv_time)        TextView tvTime;        @Bind(R.id.tv_weather)        TextView tvWeather;        @Bind(R.id.tv_wind)        TextView tvWind;        @Bind(R.id.tv_temperature)        TextView tvTemperature;        ViewHolder(View view) {            super(view);            ButterKnife.bind(this, view);        }    }}

Recyclerview的显示方式，是通过布局管理器LayoutManager来控制的，LinearLayoutManager能让Recyclerview像ListView般显示，通过控制LayoutManager的方向可以实现，垂直的列表或者水平滚动的列表；而GridLayoutManager能让Recyclerview像Gridview般显示,一行显示几个也可以控制；

GridLayoutManager gridLayoutManager = new GridLayoutManager(this, 2);

给Recyclerview设置Adapter之前必须要先设置好LayoutManager，然后就可以设置Adapter了：

  DataBean dataBean = (DataBean) T;                List<DataBean.ResultBean.FutureBean> list = dataBean.getResult().getFuture();                mList.addAll(list);                if (adapter == null) {                    adapter = new SimpleAdapter(this, mList);                    rvSimple.setAdapter(adapter);                } else {                    adapter.notifyDataSetChanged();                }

Recyclerview的点击事件

Recyclerview整个item的点击事件

Recyclerview并不像Listview一样可以直接添加子项点击事件；Recyclerview官方没有提供OnItemClickListener接口，所以Recyclerview想要实现点击事件，就得自己重写点击事件。
首先，写一个公共的接口，供所有的Recyclerview调用实现点击事件；

public interface MyItemClickListener {void onItemClick(View view, int postion);}

然后在Recyclerview的Adapter里面的ViewHolder添加view的点击事件：

static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {@Bind(R.id.tv_time)    TextView tvTime;@Bind(R.id.tv_weather)    TextView tvWeather;@Bind(R.id.tv_wind)    TextView tvWind;@Bind(R.id.tv_temperature)    TextView tvTemperature;MyItemClickListener listener;ViewHolder(View view, MyItemClickListener listener) {super(view);ButterKnife.bind(this, view);this.listener = listener;view.setOnClickListener(this);}@Overridepublic void onClick(View v) {listener.onItemClick(v, getAdapterPosition());}}public void setListener(MyItemClickListener listener) {this.listener = listener;}

在Activity中，先实现点击事件接口里面的方法，然后在创建Adapter之后，实现Adapter中的方法；就可以实现Recyclerview子项的点击事件了；

adapter.setListener(this);@Overridepublic void onItemClick(View view, int postion) {    Toast.makeText(context, "我是第" + postion + "项", Toast.LENGTH_SHORT).show();}

2.Recyclerview Item中某个控件的点击事件

项目中偶尔会遇到，一个列表，不仅Item可以点击，Item里面的某个控件也可以点击；这时候，需要同时实现Recyclerview的多个点击事件，方法与前面类似，只不过在接口中添加多一个参数；
效果图如下：
这里写图片描述

全局的接口有所改变；

public interface MyItemClickTypeListener {    void onItemClick(View view, int type , int postion);}

Adapter中的ViewHolder的写法；

 static class ViewHolder extends RecyclerView.ViewHolder {        @Bind(R.id.iv_head)        CircleImageView ivHead;        @Bind(R.id.tv_name)        TextView tvName;        @Bind(R.id.tv_myag_two)        TextView tvMyagTwo;        @Bind(R.id.tv_myag_three)        TextView tvMyagThree;        @Bind(R.id.ll_edit)        LinearLayout llEdit;        @Bind(R.id.ll_delete)        LinearLayout llDelete;        private MyItemClickTypeListener listener;        ViewHolder(View view, MyItemClickTypeListener listener) {            super(view);            ButterKnife.bind(this, view);            this.listener = listener;            llEdit.setOnClickListener(new myClick(1));            view.setOnClickListener(new myClick(2));            llDelete.setOnClickListener(new myClick(3));        }        class myClick implements View.OnClickListener {            int index = 0;            public myClick(int i) {                this.index = i;            }            @Override            public void onClick(View v) {                 listener.onItemClick(v, index , getAdapterPosition());                  }            }        }    }    public void setListener(MyItemClickTypeListener listener) {        this.listener = listener;    }

在Activity中实现接口的方法：

@Override    public void onItemClick(View view, int type, int postion) {        Intent intent = new Intent();        MyAGBean.ResultsBean.ListBean myAGBean = mList.get(postion - 1);        switch (type) {            case 1:               new ExitDialog(MyAGActivity.this, "确认删除求货？", postion - 1, this);                break;            case 2:               new ExitDialog(MyAGActivity.this, "确认删除求货？", postion - 1, this);                break;            case 3:                new ExitDialog(MyAGActivity.this, "确认删除求货？", postion - 1, this);                break;        }    }

用Recyclerview实现二级列表

项目之中可能会遇到二级列表的情况，简单来说，就是，一个列表的子项包含着一个列表；如图：

这里写图片描述

这里我的实现方式是用Recyclerview嵌套Recyclerview的方式，首先，列表Item里面的Recyclerview，它的Item的布局只是个简单的图片+文字；Adapter也是简单的Recyclerview的Adapter的写法，没什么特别；而一级列表的Item则是由一些控件加上一个Recyclerview构成；

xml布局代码：

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_marginBottom="@dimen/margin_20"    android:foreground="?android:attr/selectableItemBackground"    android:orientation="vertical">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="vertical">        <RelativeLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:background="@color/white">            <com.android.volley.toolbox.NetworkImageView                android:id="@+id/iv_xrv_market_shop"                android:layout_width="@dimen/margin_60"                android:layout_height="@dimen/margin_60"                android:layout_margin="@dimen/margin_10"                android:background="@mipmap/ic_user_loading"                android:scaleType="fitCenter" />            <TextView                android:id="@+id/tv_xrv_market_shop_title"                style="@style/text_black_16"                android:layout_alignTop="@+id/iv_xrv_market_shop"                android:layout_margin="@dimen/margin_5"                android:layout_toRightOf="@+id/iv_xrv_market_shop"                android:text="我是标题" />            <TextView                android:id="@+id/tv_xrv_market_shop_info"                style="@style/text_gray_16"                android:layout_width="match_parent"                android:layout_alignLeft="@+id/tv_xrv_market_shop_title"                android:layout_below="@+id/tv_xrv_market_shop_title"                android:layout_marginBottom="@dimen/margin_10"                android:layout_toLeftOf="@+id/ll_fans"                android:text="我是内容"                android:textColor="@color/color_two_text"                android:textSize="@dimen/text_size_14" />            <LinearLayout                android:id="@+id/ll_fans"                android:layout_width="wrap_content"                android:layout_height="@dimen/margin_43"                android:layout_alignParentRight="true"                android:layout_marginRight="@dimen/margin_18"                android:background="@drawable/btn_bg"                android:layout_alignTop="@+id/tv_xrv_market_shop_title"                android:layout_marginTop="@dimen/margin_4"                android:orientation="vertical">                <TextView                    android:layout_width="match_parent"                    android:layout_height="@dimen/margin_0"                    android:layout_weight="1"                    android:drawableLeft="@mipmap/ic_market_fans"                    android:gravity="center"                    android:text="粉丝"                    android:textColor="@color/white"                    android:textSize="@dimen/text_size_12" />                <TextView                    android:id="@+id/tv_xrv_market_shop_fans"                    android:layout_width="match_parent"                    android:layout_height="@dimen/margin_0"                    android:layout_weight="1"                    android:gravity="center"                    android:paddingTop="@dimen/margin_2"                    android:text="100人"                    android:textColor="@color/white"                    android:textSize="@dimen/text_size_12"                    />            </LinearLayout>            <ImageView                android:id="@+id/iv_xrv_market_shop_like"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                />        </RelativeLayout>        <android.support.v7.widget.RecyclerView            android:id="@+id/gv_xrv_market_shop"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_marginLeft="@dimen/margin_5"            android:background="@color/white" />        <View            android:layout_width="match_parent"            android:layout_height="@dimen/margin_0.5"            android:background="@color/color_view" />        <TextView            android:id="@+id/tv_xrv_market_shop_in"            android:layout_width="match_parent"            android:layout_height="@dimen/margin_50"            android:background="@color/white"            android:gravity="center"            android:text="进入店铺"            android:textColor="@color/colorPrimary"            android:textSize="@dimen/text_size_16" />    </LinearLayout></android.support.v7.widget.CardView>

二级列表还有一个需要注意的点，就是第二级列表子项的点击事件，跟之前的点击事件有点区别；首先需要在二级列表的Adapter写一个接口可供一级列表的Adapter调用，并实现点击事件：

public class MarketShopGvAdapter extends RecyclerView.Adapter<MarketShopGvAdapter.ViewHolder> {    private Context context;    private TwoListener twoListener;    private ImageLoader imageLoader;    private List<MarketShopBean.ResultsBean.DataBean.ListBean> list = new ArrayList<>();    public MarketShopGvAdapter(Context context, List<MarketShopBean.ResultsBean.DataBean.ListBean> list) {        this.context = context;        this.list = list;        RequestQueue queue = Volley.newRequestQueue(context);        imageLoader = new ImageLoader(queue, new BitmapCache());    }    //供一级列表调用的接口    interface TwoListener {        void setTwoListener(View view, int two);    }    public void setTwoListener(TwoListener twoListener) {        this.twoListener = twoListener;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(context).inflate(R.layout.item_gv_title_img, parent, false);        ViewHolder viewHolder = new ViewHolder(view,twoListener);        return viewHolder;    }    @Override    public void onBindViewHolder(ViewHolder holder, int position) {        holder.ivGv.setErrorImageResId(R.mipmap.ic_erro_download_small);        holder.ivGv.setDefaultImageResId(R.mipmap.ic_download_small);        //根据屏幕分辨率设置图片宽高        holder.ivGv.setImageUrl(list.get(position).getImg() + "/" + BaseMethod.getSwidth((Activity) context) / 3 + "/" + BaseMethod.getSwidth((Activity) context) / 4.8, imageLoader);        holder.tvGvTitle.setText(list.get(position).getShow());    }    @Override    public int getItemCount() {        return list.size();    }    static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {        @Bind(R.id.iv_gv)        NetworkImageView ivGv;        @Bind(R.id.tv_gv_title)        TextView tvGvTitle;        TwoListener twoListener;        ViewHolder(View view, TwoListener twoListener) {            super(view);            ButterKnife.bind(this, view);            this.twoListener = twoListener;            //实现点击事件            view.setOnClickListener(this);        }        @Override        public void onClick(View v) {            twoListener.setTwoListener(v, getAdapterPosition());        }    }}

然后在一级列表的Adapter里面要实现两个方法供Activity调用：

public class MarketShopAdapter extends RecyclerView.Adapter<MarketShopAdapter.ViewHolder> {    private Context context;    private ImageLoader imageLoader;    private OneListener oneListener;    private MyItemClickListener listener;    private List<MarketShopBean.ResultsBean.DataBean> list = new ArrayList<>();    public MarketShopAdapter(Context context, List<MarketShopBean.ResultsBean.DataBean> list) {        this.context = context;        this.list = list;        RequestQueue queue = Volley.newRequestQueue(context);        imageLoader = new ImageLoader(queue, new BitmapCache());    }    //实现二级列表点击事件的接口，供Activity调用    public interface OneListener {        void setOneListener(View view, int one, int two);    }    public void setOneListener(OneListener oneListener) {        this.oneListener = oneListener;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(context).inflate(R.layout.item_xrv_market_shop, parent, false);        ViewHolder viewHolder = new ViewHolder(view, listener);        return viewHolder;    }    @Override    public void onBindViewHolder(ViewHolder holder, int position) {        final int k = position;        MarketShopBean.ResultsBean.DataBean dataBean = list.get(position);        holder.ivXrvMarketShop.setErrorImageResId(R.mipmap.ic_user_loading);        holder.ivXrvMarketShop.setDefaultImageResId(R.mipmap.ic_user_loading);        holder.ivXrvMarketShop.setImageUrl(dataBean.getImg(), imageLoader);        holder.tvXrvMarketShopTitle.setText(dataBean.getShop());        if (dataBean.getInfo().isEmpty()) {            holder.tvXrvMarketShopInfo.setText("这个人很懒，什么都没留下~");        } else {            holder.tvXrvMarketShopInfo.setText(dataBean.getInfo());        }        if (dataBean.getFans().isEmpty()) {            holder.llFans.setVisibility(View.GONE);        } else {            holder.tvXrvMarketShopFans.setText(dataBean.getFans() + "人");        }        GridLayoutManager manager = new GridLayoutManager(context, 3);        holder.gvXrvMarketShop.setLayoutManager(manager);        MarketShopGvAdapter adapter = new MarketShopGvAdapter(context, list.get(position).getList());        holder.gvXrvMarketShop.setAdapter(adapter);        //实现回调        MarketShopGvAdapter.TwoListener twoListener = new MarketShopGvAdapter.TwoListener() {            @Override            public void setTwoListener(View view, int two) {                oneListener.setOneListener(view, k, two);            }        };        adapter.setTwoListener(twoListener);    }    @Override    public int getItemCount() {        return list.size();    }    static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {        @Bind(R.id.ll_fans)        LinearLayout llFans;        @Bind(R.id.iv_xrv_market_shop)        NetworkImageView ivXrvMarketShop;        @Bind(R.id.tv_xrv_market_shop_title)        TextView tvXrvMarketShopTitle;        @Bind(R.id.tv_xrv_market_shop_info)        TextView tvXrvMarketShopInfo;        @Bind(R.id.tv_xrv_market_shop_fans)        TextView tvXrvMarketShopFans;        @Bind(R.id.iv_xrv_market_shop_like)        ImageView ivXrvMarketShopLike;        @Bind(R.id.gv_xrv_market_shop)        RecyclerView gvXrvMarketShop;        @Bind(R.id.tv_xrv_market_shop_in)        TextView tvXrvMarketShopIn;        MyItemClickListener listener;        ViewHolder(View view, MyItemClickListener listener) {            super(view);            ButterKnife.bind(this, view);            this.listener = listener;            //一级列表的点击事件            view.setOnClickListener(this);        }        @Override        public void onClick(View v) {            listener.onItemClick(v, getAdapterPosition());        }    }    public void setListener(MyItemClickListener listener) {        this.listener = listener;    }}

在Activity或Fragment中实现方法：

public class MarketShopFragment extends Fragment implements MarketShopAdapter.OneListener@Override    public void setOneListener(View view, int one, int two) {        Intent intent = new Intent();        intent.putExtra("img", mList.get(one).getList().get(two).getImg() + "");        intent.putExtra("gid", mList.get(one).getList().get(two).getGid() + "");        intent.putExtra("shopid", mList.get(one).getList().get(two).getShopid() + "");        intent.setClass(getActivity(), GoodsDetailActivity.class);        startActivity(intent);    }

多种Item的Recyclerview

当一个界面内容超过了手机屏幕，我们会选择用ScrollView,可滚动的布局，但是用过Scrollview的人都知道，Scrollview与Listview、GirdView、Recyclerview同时使用的时候，总会遇到各种各样的问题，谷歌官方也是不推荐我们将这几个控件与Scrollview同时使用。但是项目中，肯定会出现这些应用场景的，像我项目中遇到的一个界面，顶部是标题栏，然后就是viewpager切换的广告图，然后就是一个横屏滚动的列表，最下面的一个竖屏的列表，而且最下方的列表还需要做分页加载；像这样的一个界面，有几个解决办法：

外层加Scrollview;
界面布局只有最底层一个列表，其他布局均作为列表的Header；
利用getItemViewType为列表设置不同的item；

第一种的应用肯定会遇到各种各样的冲突，解决办法只有遇到一个解决一个；

第二种也比较简单，代码如下：

    View header = LayoutInflater.from(getActivity()).inflate(R.layout.list_article_viewpager, null);    ViewPager view_pager = (ViewPager) header.findViewById(R.id.main_opearte_viewpager);    LinearLayout ll_dian = (LinearLayout) header.findViewById(R.id.ll_dian);    TextView tvTextview = (TextView) header.findViewById(R.id.tv_article_vp_title);    //给viewpager设置adapter、布局设置属性等等    listView.addHeaderView(header);

第三种，getItemViewType也有两个使用方式；

上面提到的一个界面有viewpager，横屏列表，竖屏列表，等等几个模块；
一个列表里面有几种不同的item；
先以第一种为例，项目效果图如下：

从图中可以看出，中间部分的这个界面由一个Recyclerview实现，而这个Recyclerview分成三种不同的布局，也就是说这个Recyclerview只有三个Item，因为是三种布局，所以在写Recyclerview的Adapter的时候，需要写三个ViewHolder；

首先，先定义一个数组，这个Recyclerview有几种布局，数组长度就为多少；

private int[] ids = {1, 2, 3}; @Override    public int getItemCount() {        return ids.length;    }    @Override    public int getItemViewType(int position) {        return ids[position];    }

  @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        RecyclerView.ViewHolder viewHolder = null;        View view;        switch (viewType) {            case 1:                view = LayoutInflater.from(context).inflate(R.layout.item_xrv_user_detail_one, parent, false);                OneViewHolder oneViewHolder = new OneViewHolder(view);                viewHolder = oneViewHolder;                break;            case 2:                view = LayoutInflater.from(context).inflate(R.layout.item_xrv_user_detail_two, parent, false);                TwoViewHolder twoViewHolder = new TwoViewHolder(view,listener);                viewHolder = twoViewHolder;                break;            case 3:                view = LayoutInflater.from(context).inflate(R.layout.item_rv_ud_ag, parent, false);                ThreeViewHolder threeViewHolder = new ThreeViewHolder(view);                viewHolder = threeViewHolder;                break;        }        return viewHolder;    }    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        switch (getItemViewType(position)) {            case 1:                OneViewHolder oneViewHolder = (OneViewHolder) holder;                if (infoResultsBean != null) {                    oneViewHolder.tvUdName.setText(infoResultsBean.getName());                }                break;            case 2:                TwoViewHolder twoViewHolder = (TwoViewHolder) holder;                if (resultsBean == null) {                    twoViewHolder.rlShop.setVisibility(View.GONE);                } else {                    twoViewHolder.tvTitle.setText(resultsBean.getShop());                                  }                break;            case 3:                ThreeViewHolder threeViewHolder = (ThreeViewHolder) holder;                LinearLayoutManager manager = new LinearLayoutManager(context);                manager.setOrientation(LinearLayoutManager.VERTICAL);                threeViewHolder.rvItem.setLayoutManager(manager);                if (adapter == null) {                    adapter = new UserAGAdapter(context, mList);                    threeViewHolder.rvItem.setAdapter(adapter);                } else {                    adapter.notifyDataSetChanged();                }                adapter.setListener(listener);                break;        }    }

这里需要注意的是，需要在各个子Item所需要的数据都得到后才能设置Adapter，不然会残缺某一块。

然后就是，一个Recyclerview中，有着不同的item，大概情况如下图：

这里写图片描述

这种与上面的不同，它的item长度不是2，而是整个list的长度；我在数据中加入多一个参数，用来判别是哪种类型的item，数据结构如下：

这里写图片描述

整个Adapter的代码是这样的：

public class AllCircleAdapter extends RecyclerView.Adapter {    private Context context;    private ImageLoader imageLoader;    private OneListener oneListener;    private TwoListener twoListener;    private List<AllCircleBean.ResultsBean.ListBean> list = new ArrayList<>();    public AllCircleAdapter(Context context, List<AllCircleBean.ResultsBean.ListBean> list) {        this.context = context;        this.list = list;        RequestQueue queue = Volley.newRequestQueue(context);        imageLoader = new ImageLoader(queue, new BitmapCache());    }    public interface OneListener {        void OneListener(View view, int position);    }    public interface TwoListener {        void TwoListener(View view, int position);    }    public void setOneListener(OneListener oneListener) {        this.oneListener = oneListener;    }    public void setTwoListener(TwoListener twoListener) {        this.twoListener = twoListener;    }    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        RecyclerView.ViewHolder viewHolder = null;        OneViewHolder oneViewHolder;        TwoViewHolder twoViewHolder;        View view;        switch (viewType) {            case 1:                view = LayoutInflater.from(context).inflate(R.layout.item_xrv_all_circle_one, parent, false);                oneViewHolder = new OneViewHolder(view, oneListener);                viewHolder = oneViewHolder;                break;            case 2:                view = LayoutInflater.from(context).inflate(R.layout.item_xrv_all_circle_two, parent, false);                twoViewHolder = new TwoViewHolder(view, twoListener);                viewHolder = twoViewHolder;                break;        }        return viewHolder;    }    @SuppressLint("SetTextI18n")    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        AllCircleBean.ResultsBean.ListBean allCircleBean = list.get(position);        switch (getItemViewType(position)) {            case 1:                OneViewHolder oneViewHolder = (OneViewHolder) holder;                oneViewHolder.tvAllCircleTime.setText(allCircleBean.getGoods().getTime());                break;            case 2:                TwoViewHolder twoViewHolder = (TwoViewHolder) holder;                  AllCircleBean.ResultsBean.ListBean.GoodsBean goodsBean = allCircleBean.getGoods();                twoViewHolder.tvAllCircleTitle.setText(goodsBean.getShop());                break;        }    }    @Override    public int getItemCount() {        return list.size();    }    @Override    public int getItemViewType(int position) {        return list.get(position).getT();    }    class OneViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {        @Bind(R.id.iv_item_all_circle)        CircleImageView ivItemAllCircle;        @Bind(R.id.tv_all_circle_title)        TextView tvAllCircleTitle;        @Bind(R.id.tv_all_circle_info)        TextView tvAllCircleInfo;        @Bind(R.id.tv_all_circle_time)        TextView tvAllCircleTime;        private OneListener listener;        OneViewHolder(View view, OneListener listener) {            super(view);            ButterKnife.bind(this, view);            this.listener = listener;            view.setOnClickListener(this);        }        @Override        public void onClick(View v) {            listener.OneListener(v, getAdapterPosition());        }    }    static class TwoViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {        @Bind(R.id.iv_item_all_circle)        CircleImageView ivItemAllCircle;        @Bind(R.id.tv_all_circle_title)        TextView tvAllCircleTitle;        @Bind(R.id.tv_goods_name)        TextView tvGoodsName;        @Bind(R.id.tv_all_circle_info)        TextView tvAllCircleInfo;        @Bind(R.id.tv_type)        TextView tvType;        @Bind(R.id.tv_price)        TextView tvPrice;        @Bind(R.id.tv_shop)        TextView tvShop;        @Bind(R.id.gv_circle)        RecyclerView gvCircle;        @Bind(R.id.tv_all_circle_time)        TextView tvAllCircleTime;        TwoListener listener;        TwoViewHolder(View view, TwoListener listener) {            super(view);            ButterKnife.bind(this, view);            this.listener = listener;            view.setOnClickListener(this);        }        @Override        public void onClick(View v) {            listener.TwoListener(v, getAdapterPosition());        }    }}

Recyclerview的下拉刷新以及分页加载

Recyclerview的下拉刷新以及分页加载在这里推荐使用XRecyclerview，简单易用，样式多且好看；
项目地址是：https://github.com/jianghejie/XRecyclerView

使用方法，在gradle中添加：

compile 'com.jcodecraeer:xrecyclerview:1.2.7'

xml中使用xRecyclerview：

            <com.jcodecraeer.xrecyclerview.XRecyclerView                 android:layout_width="match_parent"                android:layout_height="wrap_content"                android:scrollbars="none" />

设置xRecyclerview的方式跟普通的Recyclerview一样：

LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());layoutManager.setOrientation(LinearLayoutManager.VERTICAL);mRecyclerView.setLayoutManager(layoutManager);mRecyclerView.setAdapter(mAdapter);

然后就可以设置xRecyclerview的刷新与加载更多了：

mRecyclerView.setLoadingListener(new XRecyclerView.LoadingListener() {    @Override    public void onRefresh() {       //refresh data here    }    @Override    public void onLoadMore() {       // load more data here    }});

如果刷新完成，则添加：

mRecyclerView.refreshComplete();

如果加载更多完成，则添加：

mRecyclerView.loadMoreComplete();

也可以通过代码设置下拉刷新以及上拉加载的样式：

mRecyclerView.setRefreshProgressStyle(int style);mRecyclerView.setLaodingMoreProgressStyle(int style);mRecyclerView.setArrowImageView(R.drawable.iconfont_downgrey);mRecyclerView.setRefreshProgressStyle(ProgressStyle.BallSpinFadeLoader);

当然也可以禁止下拉或者上拉：

mRecyclerView.setPullRefreshEnabled(false);

也可以自定义Header或者footer，甚至还可以添加多个Header：

View header =   LayoutInflater.from(this).inflate(R.layout.recyclerview_header, (ViewGroup)findViewById(android.R.id.content),false);View header1 =   LayoutInflater.from(this).inflate(R.layout.recyclerview_header1, (ViewGroup)findViewById(android.R.id.content),false);mRecyclerView.addHeaderView(header);mRecyclerView.addHeaderView(header1);

Recyclerview的批量删除

Recyclerview的批量删除里面，首先每个Item里面都有一个Checkbox，而且默认是隐藏的，只有点击删除按钮才会出现，效果图如下：

这里写图片描述

所以这时候需要在Adapter里面添加一个全局静态变量，在activity中，通过点击按钮改变这个变量的值从而改变Recyclerview中的Checkbox的显隐状态；

     //Aadpter中添加的变量     public static boolean isSee = false;     //Adapter中，通过变量显示或隐藏CHeckbox     if (isSee) {        holder.cbDelete.setVisibility(View.VISIBLE);        } else {        holder.cbDelete.setVisibility(View.GONE);      }    //Activity中，点击按钮改变Checkbox的状态     if (adapter != null) {        if (CollectListAdapter.isSee) {            CollectListAdapter.isSee = false;                     } else {             CollectListAdapter.isSee = true;             }             adapter.notifyDataSetChanged();       }

然后则需要在Adapter中添加多一个HashMap，来记录Recyclerview每一个Item中Checkbox的选中状态；

public static HashMap<Integer, Boolean> checked = new HashMap<>(); if (isSee) {        holder.cbDelete.setChecked(checked.get(position) != null);     }

在Activity中，同时需要一个HashMap来存放需要删除的值，比如说这个Recyclerview的item中的id等等，在Recyclerview的点击事件中，同时设置Adapter中的HashMap以及Activity中的HashMap；

        if (CollectListAdapter.checked.get(postion - 1) == null) {            CollectListAdapter.checked.put(postion - 1, true);            selectlist.put(postion - 1, mList.get(postion - 1).getFid());            } else {                CollectListAdapter.checked.remove(postion - 1);                selectlist.remove(postion - 1);            }            adapter.notifyDataSetChanged();

selectlist中的String则是我们需要删除的数据，执行删除操作的时候将这些值传给服务器即可。

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