wsna132/PullToRefreshRecyclerView

An Pull To Refresh RecyclerView for Android, support pull down and pull up to refresh!

PullToRefreshRecyclerView

1. 在Module下的build.gradle中添加依赖

compile 'com.androidkun:pulltorefreshrecyclerview:1.0.9'

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);
//是否开启下拉刷新功能
pullToRefreshRV.setPullRefreshEnabled(true);
//是否开启上拉加载功能
pullToRefreshRV.setLoadingMoreEnabled(true);
//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);
    }

}