RecyclerView-Head and Body

import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.fusquare.henji.philips.R;
import com.fusquare.henji.philips.bean.BacknetWeatherbean;
import com.fusquare.henji.philips.data.HenderData;

import org.androidannotations.annotations.ItemClick;
import org.androidannotations.annotations.ViewById;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by huanzw on 2018/3/29.
 */

public class KwrAdapter extends RecyclerView.Adapter {
    //先定义两个ItemViewType，0代表头，1代表表格中间的部分
    private static final int ITEM_VIEW_TYPE_HEADER = 0;
    private static final int ITEM_VIEW_TYPE_ITEM = 1;
    //数据源
    private List<BacknetWeatherbean.ResultBean> dataLists;

    //构造函数
    public KwrAdapter(List<BacknetWeatherbean.ResultBean> dataList) {
        this.dataLists = dataList;
    }

    /**
     * 判断当前position是否处于第一个
     * @param position
     * @return
     */
    public boolean isHeader(int position) {
        return position == 0;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
        //在onCreateViewHolder方法中，我们要根据不同的ViewType来返回不同的ViewHolder
        if (viewType == ITEM_VIEW_TYPE_HEADER) {
            //对于Header，我们应该返回填充有Header对应布局文件的ViewHolder（再次我们返回的都是一个布局文件，请根据不同的需求做相应的改动）
            return new HeaderViewHolder(LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_head_weath, null));
        } else {
            //对于Body中的item，我们也返回所对应的ViewHolder
            return new BodyViewHolder(LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_kwr, null));
        }
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, final int position) {
        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (itemClickListener != null) {
                    itemClickListener.itemClick(position);
                }
            }
        });
        if (isHeader(position)) {
            ((HeaderViewHolder)viewHolder).getTextView().setText(""+Math.round(Float.parseFloat(dataLists.get(0).getValue().get(0).getValue().toString()))+"℃ ");
            String icon = HenderData.getkwrIcon();
        }else {
            //其他条目中的逻辑在此
            ((BodyViewHolder) viewHolder).getValue().setText(""+(double)Math.round(
                    Double.parseDouble(dataLists.get(position - 1).getValue().get(position - 1).getValue().toString())*100)/100);
            ((BodyViewHolder) viewHolder).getName().setText(""+dataLists.get(position - 1).getDevice().getSensor());
            String icon = dataLists.get(position - 1).getDevice().getSensor() ;
           
        }
    }

    /**
     * 总条目数量是数据源数量+1，因为我们有个Header
     * @return
     */
    @Override
    public int getItemCount() {
        return dataLists.size() + 1;
    }

    /**
     *
     * 复用getItemViewType方法，根据位置返回相应的ViewType
     * @param position
     * @return
     */
    @Override
    public int getItemViewType(int position) {
        //如果是0，就是头，否则则是其他的item
        return isHeader(position) ? ITEM_VIEW_TYPE_HEADER : ITEM_VIEW_TYPE_ITEM;
    }

    /**
     * 给头部专用的ViewHolder，大家根据需求自行修改
     */
    public class HeaderViewHolder extends RecyclerView.ViewHolder {
        private TextView textView;
        private ImageView kwr_icon ;
        public HeaderViewHolder(View itemView) {
            super(itemView);
            kwr_icon = (ImageView) itemView.findViewById(R.id.kwr_icon);
            textView = (TextView) itemView.findViewById(R.id.kwr_degrees);

        }
        public TextView getTextView() {
            return textView;
        }
        public ImageView getImageView(){
            return kwr_icon ;
        }
    }

    /**
     * 给GridView中的条目用的ViewHolder，里面只有一个TextView
     */
    public class BodyViewHolder extends RecyclerView.ViewHolder {
        private TextView kwr_name;
        private ImageView kwr_img ;
        private TextView kwr_value ;
        private LinearLayout kwr_linear;
        public BodyViewHolder(View itemView) {
            super(itemView);
            kwr_name = (TextView) itemView.findViewById(R.id.kwr_name);
            kwr_img = (ImageView) itemView.findViewById(R.id.kwr_img);
            kwr_value = (TextView) itemView.findViewById(R.id.kwr_value);
            kwr_linear = (LinearLayout)itemView.findViewById(R.id.kwr_linear);
        }
        public TextView getName() {
            return kwr_name;
        }
        public TextView getValue(){
            return kwr_value ;
        }
        public ImageView getImg(){
            return kwr_img ;
        }
        public LinearLayout getKwr_linear(){return kwr_linear;}
    }
    public interface ItemClickListener {
        void itemClick(int position);
    }
    ItemClickListener itemClickListener;
    public void setItemClickListener(ItemClickListener itemClickListener) {
        this.itemClickListener = itemClickListener;
    }
    //自定义删除item方法
    public void itemRemove(int position) {
        dataLists.remove(position);
        notifyItemRemoved(position);
    }
}