PullToRefreshRecyclerView——带上拉刷新下拉加载功能的RecyclerView

2019-11-09 15:47:25

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来源：转载

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现在ListView和GridView逐渐被RecyclerView替代，之前基于ListView和GridView的刷新加载框架也已经过时，这里介绍基于RecyclerView的刷新加载框架——PullToRefreshRecyclerView，先看效果。

这里写图片描述

1. 在Module下的build.gradle中添加依赖

compile 'com.androidkun:pulltorefreshrecyclerview:1.0.4'

2. 在布局文件中添加PullToRefreshRecyclerView控件

<com.androidkun.PullToRefreshRecyclerView android:id="@+id/pullToRefreshRV" android:layout_width="match_parent" android:layout_height="match_parent"/>

3. 初始化PullToRefreshRecyclerView并设置属性和回调

pullToRefreshRV = (PullToRefreshRecyclerView) findViewById(R.id.pullToRefreshRV); LinearLayoutManager layoutManager = new LinearLayoutManager(this); layoutManager.setOrientation(LinearLayoutManager.VERTICAL); pullToRefreshRV.setLayoutManager(layoutManager); adapter = new ModeAdapter(this, R.layout.item_mode,data); pullToRefreshRV.setAdapter(adapter); //设置是否显示上次刷新的时间 pullToRefreshRV.displayLastRefreshTime(true); //设置刷新回调 pullToRefreshRV.setPullToRefreshListener(this); //主动触发下拉刷新操作 //pullToRefreshRV.onRefresh();

如果想使用网格列表，则相应设置布局管理者为网格布局管理者就行了

GridLayoutManager gridLayoutManager = new GridLayoutManager(this,2); recyclerView.setLayoutManager(gridLayoutManager);

此外也可以通过 setRefreshingResource（int resId）和setLoadMoreResource（int resId）自定义刷新箭头和加载的图标。

4.处理刷新加载逻辑

@Override public void onRefresh() { pullToRefreshRV.postDelayed(new Runnable() { @Override public void run() { pullToRefreshRV.setRefreshComplete(); //模拟没有数据的情况 data.clear(); adapter.notifyDataSetChanged(); } }, 3000); } @Override public void onLoadMore() { pullToRefreshRV.postDelayed(new Runnable() { @Override public void run() { pullToRefreshRV.setLoadMoreComplete(); //模拟加载数据的情况 int size = data.size(); for (int i = size; i < size + 4; i++) { data.add("" + i + i + i + i); } adapter.notifyDataSetChanged(); } }, 3000); }

框架中提供封装好的BaseAdapter，减少编写相同的代码，提高开发效率，Demo中的ModeAdapter就是继承了BaseAdapter，代码如下：

public class ModeAdapter extends BaseAdapter { public ModeAdapter(Context context, int layoutId, List datas) { super(context, layoutId, datas); } @Override public void convert(ViewHolder holder, Object o) { holder.setText(R.id.textView, (String) o); }}

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