LRecyclerView(RecyclerView)下拉刷新和上拉加载

(只有下拉刷新和上拉加载的简单小Demo:下载链接:http://download.csdn.net/download/qq_24800377/10020934)

LRecyclerView是支持addHeaderView、 addFooterView、下拉刷新、分页加载数据的RecyclerView。

它对 RecyclerView 控件进行了拓展,给RecyclerView增加HeaderView、FooterView,并且不需要对你的Adapter做任何修改。

在此感谢第三方提供者……

使用(最下方给出封装好的Adapter和例子的TestAdapter)

第一步:

       在build.gradle中,添加JitPack仓库依赖

   

	//增加JitPack仓库依赖
	repositories{
    	    maven { url "https://jitpack.io" }
	}


第二步:

      还是build.gradler中,添加LRecyclerView依赖

	//添加LRecyclerView 依赖
	compile 'com.github.jdsjlzx:LRecyclerView:1.4.3'

第三步:

      添加布局文件

         

xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.github.jdsjlzx.recyclerview.LRecyclerView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

RelativeLayout>

 

第四步(使用):


在mainAvtivity中初始化View.

//初始化view
private void initView(){
    recyclerView = (LRecyclerView) findViewById(R.id.list);
    //下拉刷新
    recyclerView.setOnRefreshListener(new OnRefreshListener() {
        @Override
        public void onRefresh() {
            Log.e(TAG,"下拉刷新……");
            getData();
            showView();
        }
    });

    //上拉加载 更多
    recyclerView.setOnLoadMoreListener(new OnLoadMoreListener() {
        @Override
        public void onLoadMore() {
            Log.e(TAG,"上拉加载更多……");
            getData();
            showView();
        }
    });
}

//展示View
private void showView(){
    TestAdapter adapter = new TestAdapter(this,getData());
    lRecyclerViewAdapter = new LRecyclerViewAdapter(adapter);
    recyclerView.setAdapter(lRecyclerViewAdapter);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
}

//获取数据方法
private List getData(){
    List strList = new ArrayList();
    for(int i=0;i<20;i++){
        strList.add("包子");
    }
    recyclerView.refreshComplete(10);//加载完成,结束动画布局,参数为一页最大数
    return strList;
}


项目中使用的TestAdapter:


/**
 * 测试adapter
 */
public class TestAdapter extends ListBaseAdapter{

   public TestAdapter(Context context,List strList){
      super(context);
      setDataList(strList);//填充数据
   }

   @Override
   public int getLayoutId() {
      return R.layout.adapter_text_item;
   }

   @Override
   public void onBindItemHolder(SuperViewHolder holder, int position) {
      String data = getDataList().get(position);
      TextView tv = holder.getView(R.id.tv);
      tv.setText("当前position:"+position+",数据:"+data);
   }
}


封装好的ListBaseAdapter


/**
 * 封装adapter(注意:仅供参考,根据需要选择使用demo中提供的封装adapter)
 * @param  数据类型
 */
public abstract class ListBaseAdapter<T> extends RecyclerView.Adapter {
    protected Context mContext;
    private LayoutInflater mInflater;

    protected List<T> mDataList = new ArrayList<>();

    public ListBaseAdapter(Context context) {
        mContext = context;
        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public SuperViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = mInflater.inflate(getLayoutId(), parent, false);
        return new SuperViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(SuperViewHolder holder, int position) {
        onBindItemHolder(holder, position);
    }

    //局部刷新关键:带payload的这个onBindViewHolder方法必须实现
    @Override
    public void onBindViewHolder(SuperViewHolder holder, int position, List payloads) {
        if (payloads.isEmpty()) {
            onBindViewHolder(holder, position);
        } else {
            onBindItemHolder(holder, position, payloads);
        }

    }

    public abstract int getLayoutId();

    public abstract void onBindItemHolder(SuperViewHolder holder, int position);

    public void onBindItemHolder(SuperViewHolder holder, int position, List payloads){

    }

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

    public List<T> getDataList() {
        return mDataList;
    }

    public void setDataList(Collection<T> list) {
        this.mDataList.clear();
        this.mDataList.addAll(list);
        notifyDataSetChanged();
    }

    public void addAll(Collection<T> list) {
        int lastIndex = this.mDataList.size();
        if (this.mDataList.addAll(list)) {
            notifyItemRangeInserted(lastIndex, list.size());
        }
    }

    public void remove(int position) {
        this.mDataList.remove(position);
        notifyItemRemoved(position);
        if(position != (getDataList().size())){ // 如果移除的是最后一个,忽略
            notifyItemRangeChanged(position,this.mDataList.size()-position);
        }
    }

    public void clear() {
        mDataList.clear();
        notifyDataSetChanged();
    }
}       
  





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