常用控件(二.2) : RecycleView 的使用

1结合SwipeRefreshLayout 实现下拉刷新。

2实现上拉刷新

3更新列表中的数据

4设置条目点击事件

首先看RecycleView的布局文件配置：

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/refreshlayout_left"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        >

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerview_left"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layoutAnimation="@anim/list_anim_layout"
            android:cacheColorHint="@null"
            android:scrollbars="vertical" />
    </android.support.v4.widget.SwipeRefreshLayout>

</LinearLayout>

list_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:delay="0.4"
   android:animationOrder="normal"
   android:animation="@anim/list_anim"/>

list_anim_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
   android:interpolator="@android:anim/accelerate_interpolator"
   android:shareInterpolator="true">
   <alpha
      android:fromAlpha="0.0"
      android:toAlpha="1.0"
      android:duration="500"/>
<translate
      android:fromYDelta="-10%p"
      android:toYDelta="0%p"
      android:duration="500" />
</set>

初始化 RecycleView 控件 和 下拉控件

init{

// 设置下拉 控件属性
leftPullRefresh.setColorSchemeResources(R.color.color_037AFF, R.color.color_success,
        R.color.text_color_ff3747, R.color.text_color_acacac);//设置加载圈圈的颜色
leftPullRefresh.setDistanceToTriggerSync(300);//设置手指下滑距离
rightPullRefresh.setColorSchemeResources(R.color.color_037AFF, R.color.color_success,
        R.color.text_color_ff3747, R.color.text_color_acacac);//设置加载圈圈的颜色
rightPullRefresh.setDistanceToTriggerSync(300);//设置手指下滑距离

initLeftList();

}

// RecycleView 空间的 适配器 adapter 和 下拉刷新标记

GiftMoneyAdapter leftListAdapter = null;

private int astVisibleItemLeft = 0;

private void initLeftList() {
    linearManagerLeft = new LinearLayoutManager(this);//设置布局管理器
    linearManagerLeft.setOrientation(LinearLayoutManager.VERTICAL);
    leftList.setLayoutManager(linearManagerLeft);
    leftList.setItemAnimator(new DefaultItemAnimator());//设置Item增加、移除动画

    leftPullRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            //下拉刷新 业务方法
            
        }
    });

    leftListAdapter = new GiftMoneyAdapter(this);
    leftListAdapter.setOnItemClickLitener(new GiftMoneyAdapter.OnItemClickLitener() {
        @Override
        public void onItemClick(View view, int position, Button btn) {
            // 条目点击事件处理
           
        }
    });
    leftList.setAdapter(leftListAdapter);
    leftList.setOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(RecyclerView recyclerView,
                                         int newState) {
            super.onScrollStateChanged(recyclerView, newState);
            if (newState == RecyclerView.SCROLL_STATE_IDLE && astVisibleItemLeft + 1 == leftListAdapter.getItemCount()) {

                //上拉刷新业务方法
            }
		if (/*newState == RecyclerView.SCROLL_STATE_DRAGGING &&*/ astVisibleItemLeft + 1 == adapter.getItemCount()) {
   		 Log.i("SCROLL_STATE_DRAGGING", "手滑到底部了");
		}
		if (astVisibleItemtop == 0) {
 		   Log.i("SCROLL_STATE_DRAGGING", "手滑到顶部了");
		}
            if (newState == RecyclerView.SCROLL_STATE_DRAGGING) {
                Log.i("SCROLL_STATE_DRAGGING", "手滑动：SCROLL_STATE_DRAGGING");
            } else if (newState == RecyclerView.SCROLL_STATE_SETTLING) {
                Log.i("SCROLL_STATE_SETTLING", "松开惯性滑动：SCROLL_STATE_SETTLING");
            } else if (newState == RecyclerView.SCROLL_STATE_IDLE) {
                Log.i("SCROLL_STATE_IDLE", "手松开：SCROLL_STATE_IDLE");
            }
        }       

 	@Override      

 	 public void onScrolled(RecyclerView recyclerView, int dx, int dy) {            super.onScrolled(recyclerView, dx, dy);
		if (dy < 0) {
    		   Log.i("-----", "手指向下划" + dy);
		} else {
     		   Log.i("-----", "手指向上划" + dy);
		}
            astVisibleItemtop  = linearManagerLeft.findFirstVisibleItemPosition();  
            astVisibleItemLeft = linearManagerLeft.findLastVisibleItemPosition();        }    });}

Adapter 类的编写。。

package com.hanya.financing.main.game.more;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

import com.hanya.financing.R;
import com.hanya.financing.global.domain.ActiveCenterMoreCardEntity;
import com.hanya.financing.global.domain.ActiveCenterMoreGiftMoneyEntity;

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


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

    private static final int TYPE_ITEM = 0;
    private static final int TYPE_HEADER = 1;

    @Override//我理解是灵活设置item的显示类型，可以显示多种不同item
    public int getItemViewType(int position) {

        if (position == 0) {
            return TYPE_HEADER;
        } else {
            return TYPE_ITEM;
        }
    }
    String nextInvestMoney;
    String investMoney;
    public void setHeaderData(String nextInvestMoney,String investMoney){
        this.nextInvestMoney = nextInvestMoney;
        this.investMoney = investMoney;
    }

    public List<ActiveCenterMoreGiftMoneyEntity.GiftInfo> getData() {
        return this.data;
    }

    /**
     * 设置数据
     * @param newData  list上的数据
     * @param isAddMore  true：如果是下拉刷新，则加载最新数据， false：否则 （上拉刷新）追加数据
     */
    public void setData(List<ActiveCenterMoreGiftMoneyEntity.GiftInfo> newData,boolean isAddMore) {
        if(isAddMore){
            this.data.clear();
            this.data.addAll(newData);
        }else{
            this.data.addAll(newData);
        }

    }

    List<ActiveCenterMoreGiftMoneyEntity.GiftInfo> data;
    Context context;
    public GiftMoneyAdapter(Context context){
        this.context = context;
        this.data = data;
        data = new ArrayList<ActiveCenterMoreGiftMoneyEntity.GiftInfo>();
    }

    /**
     * 初始化view
     * @param parent
     * @param viewType
     * @return
     */
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType == TYPE_ITEM) {
            View itemView = LayoutInflater.from(context).inflate(R.layout.item_activitycenter_more_giftmoney, null);
            ItemViewHolder itemViewHolder = new ItemViewHolder(itemView);
            return itemViewHolder;
        }else if(viewType==TYPE_HEADER){
            View header = LayoutInflater.from(context).inflate(R.layout.item_activitycenter_more_giftmoney_header, null);
            header.findViewById(R.id.line_to_hide).setVisibility(View.GONE);
            header.findViewById(R.id.btn_use).setVisibility(View.GONE);
            ItemViewHolder headerHolder = new ItemViewHolder(header);
            return headerHolder;
        }
        return null;
    }

    /**
     * 绑定数据
     * @param holder
     * @param position
     */
    @Override
    public void onBindViewHolder( RecyclerView.ViewHolder holder, final int position) {
            final ItemViewHolder h = (ItemViewHolder) holder;
            if(h.getItemViewType()==TYPE_HEADER){
                h.控件 set value
            }else if(h.getItemViewType()==TYPE_ITEM){
                ActiveCenterMoreGiftMoneyEntity.GiftInfo itemdata = data.get(position);

                String value= itemdata.getValue();
                h.控件 .setValue(value);
               

                h.btn_use.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mOnItemClickLitener.onItemClick(h.itemView, position, h.btn_use);
                    }
                });
            }

    }


    //自定义的ViewHolder，持有每个Item的的所有界面元素
    class ItemViewHolder extends RecyclerView.ViewHolder {
        View line_to_hide;
        TextView tv_giftmoney;
        TextView tv_giftmoney_amount;
        Button btn_use;

        public ItemViewHolder(View view) {
            super(view);
            tv_giftmoney = (TextView) view.findViewById(R.id.tv_giftmoney);
            tv_giftmoney_amount = (TextView) view.findViewById(R.id.tv_giftmoney_amount);
            btn_use = (Button) view.findViewById(R.id.btn_use);
            line_to_hide = view.findViewById(R.id.line_to_hide);
        }

    }

    @Override
    public int getItemCount() {
        return this.data.size() ;
    }

    /**
     * 自定义ItemClick的回调接口
     */
    private OnItemClickLitener mOnItemClickLitener;

    public interface OnItemClickLitener {
        void onItemClick(View view, int position, Button btn_usercard);

    }

    public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener) {
        this.mOnItemClickLitener = mOnItemClickLitener;
    }
}

设置数据。。

     ActiveCenterMoreCardEntity entity = new ActiveCenterMoreCardEntity(ActiveCenterMoreCardEntity.CARD_INDEX_INFO);
        boolean isPullRefresh = rightPullRefresh.isRefreshing();
        if(isPullRefresh){
            rightPullRefresh.setRefreshing(false);
        }
        try {
            entity.unPackData(data);
            this.currentCardentity = entity;
            showCardPageData(entity,isPullRefresh);
        } catch (Exception e) {
            e.printStackTrace();
        }


showCardPageData(bean,boolean isAddMore){
 //更新列表
        List<ActiveCenterMoreCardEntity.CardInfo> d = entity.getCardList();
        if (d != null && d.size() > 0) {
          //  boolean isAddMore = (entity.getOffset() < entity.getPagesize()) ? false : true;
            rightListAdapter.setData(d, isAddMore);
            rightListAdapter.notifyDataSetChanged();
            // 偏移量 成倍加10
            currentOffsetRight = currentOffsetRight + entity.getPagesize();
        }

}