Android SwipeRefreshLayout下拉刷新源码解析

本文实例为大家分享了swiperefreshlayout下拉刷新源码，供大家参考，具体内容如下

1.swiperefreshlayout是google在support v4 19.1版本的library更新的一个下拉刷新组件，实现刷新效果更方便。

弊端:只有下拉

//设置刷新控件圈圈的颜色
swipe_refresh_layout.setcolorschemeresources(android.r.color.holo_blue_light, android.r.color.holo_orange_light, android.r.color.holo_red_light, android.r.color.holo_green_light);
//设置刷新控件背景色
swipe_refresh_layout.setprogressbackgroundcolorschemecolor(getresources().getcolor(android.r.color.white));
//设置滑动距离
swipe_refresh_layout.setdistancetotriggersync(100);
//设置大小模式
swipe_refresh_layout.setsize(swiperefreshlayout.default);
//设置下拉刷新控件状态隐藏
swipe_refresh_layout.setrefreshing(false);　　

2.在xml文件中引用android.support.v4.widget.swiperefreshlayout控件，在里面可以放置任何一个控件，例如listview，gridview等。

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" > 
 
 <android.support.v4.widget.swiperefreshlayout 
  android:id="@+id/id_swipe_ly" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" > 
 
  <listview 
   android:id="@+id/id_listview" 
   android:layout_width="match_parent" 
   android:layout_height="match_parent" > 
  </listview> 
 </android.support.v4.widget.swiperefreshlayout> 
 
</relativelayout> 

3.java代码

public class mainactivity extends activity implements swiperefreshlayout.onrefreshlistener {
 
 private swiperefreshlayout swipelayout;
 private listview listview;
 private listviewadapter adapter;
 private list<iteminfo> infolist;
  
 @override
 protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_main);
 
  swipelayout = (swiperefreshlayout) this.findviewbyid(r.id.swipe_refresh);
  swipelayout.setonrefreshlistener(this);
   
  // 顶部刷新的样式
  swipelayout.setcolorscheme(android.r.color.holo_red_light, android.r.color.holo_green_light,
    android.r.color.holo_blue_bright, android.r.color.holo_orange_light);
 
  infolist = new arraylist<iteminfo>();
  iteminfo info = new iteminfo();
  info.setname("coin");
  infolist.add(info);
  listview = (listview) this.findviewbyid(r.id.listview);
  adapter = new listviewadapter(this, infolist);
  listview.setadapter(adapter);
 }
 
 public void onrefresh() {
  new handler().postdelayed(new runnable() {
   public void run() {
    swipelayout.setrefreshing(false);
    iteminfo info = new iteminfo();
    info.setname("coin-refresh");
    infolist.add(info);
    adapter.notifydatasetchanged();
   }
  }, 500);
 }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。