简述
目前流行android 下拉刷新上拉加载开源框架有很多，XListView,PullToRefresh,android-Ultra-Pull-To-Refresh 等，但是能够像android-Ultra-Pull-To-Refresh那样，将上下拉处理事件分装到一个类处理，并且提供自定义上下拉显示效果的开源组件不多。所以，小编初试，封装一个兼容性不错，而且可以自定义上下拉效果的组件popularrefreshlayout，
支持gradle引用 compile 'com.awarmisland.android:popularrefreshlayout:1.0.6'
功能简述
目前，小编设置两种下拉刷新效果，一种是经典默认下拉刷新效果，一种是Material风格的，如效果图所示。经过调试，PopularRefreshLayout支持ScrollView ,ListView,WebView等。

使用方式

1. gradle.build中添加引用 compile 'com.awarmisland.android:popularrefreshlayout:1.0.4'****
2. 将需要下拉刷新的内容外面添加组件

<com.awarmisland.android.popularrefreshlayout.RefreshLayout  
       android:id="@+id/refresh"  
       android:layout_width="match_parent"  
       android:layout_height="match_parent">  
<!--刷新内容-->  
<com.awarmisland.android.popularrefreshlayout.RefreshLayout />  

3.设置下拉刷新，上拉加载监听（以默认下拉刷新效果内嵌ListView为例子）

RefreshLayout  refresh  = (RefreshLayout) findViewById(R.id.refresh);  
refresh.setAllowLoadMore(true);//设置支持上拉加载  
refresh.setRefreshListener(refreshListener);  

private RefreshListener refreshListener = new RefreshListener() {  
        @Override  
        public void onRefresh(final RefreshLayout refreshLayout) {  
            refreshLayout.postDelayed(new Runnable() {  
                @Override  
                public void run() {  
                    refreshLayout.finishRefresh();  
                    adapter.clear();  
            //刷新数据  
                       
                    adapter.notifyDataSetChanged();  
                }  
            }, 3000);  
        }  
  
        @Override  
        public void onRefreshLoadMore(final RefreshLayout refreshLayout) {  
            refreshLayout.postDelayed(new Runnable() {  
                @Override  
                public void run() {  
                    refreshLayout.finishRefreshLoadMore();  
                    //添加数据  
                }  
            }, 3000);  
        }  
    };  

4.自定义下拉上拉效果，通过自定义类继承BaseHeader 和BaseFooter，提供上下拉手势过程onBegin——>onPull ——>onRelease——>onRefreshing——>onComlete

public abstract void onComlete(RefreshLayout materialRefreshLayout);  
public abstract void onBegin(RefreshLayout materialRefreshLayout);  
public abstract void onPull(RefreshLayout materialRefreshLayout, float fraction);  
public abstract void onRelease(RefreshLayout materialRefreshLayout, float fraction);  
public abstract void onRefreshing(RefreshLayout materialRefreshLayout);  

5.以Material风格下拉刷新效果为例，添加自定义刷新效果

RefreshLayout   refresh  = (RefreshLayout) findViewById(R.id.refresh);  
MaterialHeaderView headerView = new MaterialHeaderView(this);//初始化自定义刷新头部  
refresh.setHeaderView(headerView);//添加头部  
refresh.setAllowLoadMore(true);  

Github:https://github.com/awarmisland/PopularRefreshLayout