android中RecycleView分页原生代码封装，无任何第三方代

概述

RecycleView分页加载封装，简单方便，功能齐全

详细

代码下载：http://www.demodashi.com/demo/13283.html

一、场景：

在项目开发中经常使用到列表集合，而目前RecycleView已经取代ListView，但是RecycleView目前没有分页功能，这就需要我们自己实现，一下是我封装分页功能的使用方法。

二、分页实现：

RecycleView分页主要测量列表滚动到底部，根据不同场景返回不同的viewHolder，每个viewHolder中有不同的itemLayout

(position) {
    (position + == getItemCount()) {
        () {
            }
        } {
        }
}

返回不同的viewHolder

RecyclerView.ViewHolder (ViewGroup parentviewType) {
    (viewType == ) {
        View view = LayoutInflater.().inflate(R.layout.)view.setLayoutParams(LinearLayout.LayoutParams(LinearLayout.LayoutParams.ScreenUtils.()))FooterViewHolder(view)} (viewType == ) {
        View view = LayoutInflater.().inflate(R.layout.)view.setLayoutParams(LinearLayout.LayoutParams(LinearLayout.LayoutParams.ScreenUtils.()))FailedViewHolder(view)} {
        View view = LayoutInflater.().inflate()BaseViewHolder holder = BaseViewHolder(view)holder}
}

在判断列表滚动到底部的时候，判断后面还有没有更多数据，如果有，调用加载更多的接口回调，如果没有将isHasMore设置成false即可。

(RecyclerView recyclerViewnewState) {
    .onScrollStateChanged(recyclerViewnewState)(newState == RecyclerView.&& ((+ ) == getItemCount())) {
        .onLoad()}
}
 
(RecyclerView recyclerViewdxdy) {
    .onScrolled(recyclerViewdxdy)= ((LinearLayoutManager) recyclerView.getLayoutManager()).findLastCompletelyVisibleItemPosition()}

三、使用分页：

1、见demo中的BaseAdapter、BaseBean、BaseViewHolder和listener、utils、widget包中代码赋值到你的项目中；

2、创建自己的bean类，继承BaseBean

public class MyBean extends BaseBean {
    private String content;
 
    public String getContent() {
        return content;
    }
 
    public void setContent(String content) {
        this.content = content;
    }
}

3、创建自己的adapter，集成BaseAdapter并实现setViewHolder方法

public class MyAdapter extends BaseAdapter {
    public MyAdapter(Context context, List<MyBean> list) {
        super(context, list);
        //设置项布局
        setItemLayout(R.layout.layout_item);
    }
 
    @Override
    public void setViewHolder(RecyclerView.ViewHolder holder, int position) {
        if (holder instanceof BaseViewHolder) {
            MyBean bean = (MyBean) list.get(position);
            BaseViewHolder baseViewHolder = (BaseViewHolder) holder;
            //获取项布局中控件设置内容
            TextView tv = baseViewHolder.itemView.findViewById(R.id.tv_item);
            tv.setText(bean.getContent());
        } else if (holder instanceof FooterViewHolder) {
            if (isHasMore) {
                ((FooterViewHolder) holder).getTvFooter().setText("正在加载中...");
                ((FooterViewHolder) holder).getProgressBar().setVisibility(View.VISIBLE);
            } else {
                ((FooterViewHolder) holder).getTvFooter().setText("没有更多了");
                ((FooterViewHolder) holder).getProgressBar().setVisibility(View.GONE);
            }
        } else {
            ((FailedViewHolder) holder).getTvFailed().setText("网络异常");
        }
    }
 
}

4、调用分页

1）初始化RecycleView

recyclerView.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
recyclerView.addItemDecoration(new MyItemDecoration(this, DividerItemDecoration.VERTICAL_LIST, true, 30));
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());

2）、设置adapter

private void initData() {
    for (int i = 0; i < 20; i++) {
        MyBean bean = new MyBean();
        bean.setContent("第" + i + "条内容");
        list.add(bean);
    }
    adapter = new MyAdapter(this, list);
    recyclerView.setAdapter(adapter);
    adapter.setOnItemClickListener(onItemClickListener);
    adapter.setView(recyclerView);
    adapter.setOnLoadMoreListener(onLoadMoreListener);
}

OnLoadMoreListener = OnLoadMoreListener() {
    () {
        (!.isHasMore()) {
            }
        (i = * i < * + i++) {
            MyBean bean = MyBean()bean.setContent(+ i + ).add(bean)}
        = + (== ) {
            .setHasMore()}
        .notifyDataSetChanged()}
}