常用控件(二.2) : RecycleView 的使用

来源：互联网发布：淘宝宿迁店是指什么编辑：程序博客网时间：2024/05/16 08:57

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();        }}

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