air mobile andriod ios 分页加载控件

近来研究用flex 写android 、ios应用，遇到了一个分页加载的问题，我们用的是flex sdk 12,air 15 没有找到类似android ListView分页组件，所以就和同事自己写了个，效果还是可以的，向上拖动刷新，向下拖动加载。如果有感兴趣的朋友可以拿走，如果你有更好的通知我一声，代码就直接帖出来吧。

<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"   xmlns:s="library://ns.adobe.com/flex/spark"   applicationComplete="init()"><fx:Declarations><s:ArrayCollection id="_ac"/><s:Fade id="_fadeIn" alphaFrom="0" alphaTo="1" duration="500"/></fx:Declarations><fx:Script><![CDATA[import mx.events.PropertyChangeEvent;private static const PADDING:uint = 15;private function init():void {updateList();_list.dataGroup.addEventListener(PropertyChangeEvent.PROPERTY_CHANGE, handleScroll);}private function handleScroll(event:PropertyChangeEvent):void {if (_busy.visible || _busy_x.visible || event.source != event.target || event.property != 'verticalScrollPosition') {return;}//下拉 加载 if (event.newValue < -3 * PADDING && event.oldValue >= -3 * PADDING) {_hintDown.visible = true;_hintUp.visible = false;_fadeIn.play([_hintDown]);} else if (event.newValue < -6 * PADDING && event.oldValue >= -6 * PADDING) {_hintDown.visible = false;_hintUp.visible = true;_fadeIn.play([_hintUp]);} else if (event.newValue >= -6 * PADDING && event.oldValue < -6 * PADDING) {_hintDown.visible = true;_hintUp.visible = false;_fadeIn.play([_hintDown]);} else if (event.newValue >= -3 * PADDING && event.oldValue < -3 * PADDING) {_hintDown.visible = false;_hintUp.visible = false;}//上拉刷新 加载 if (event.newValue < 3 * PADDING && event.oldValue >= 3 * PADDING) {_hintDown_up.visible = false;_hintUp_up.visible = false;} else if (event.newValue < 6 * PADDING && event.oldValue >= 6 * PADDING) {_hintDown_up.visible = false;_hintUp_up.visible = false;}else if (event.newValue >= 6 * PADDING && event.oldValue < 6 * PADDING) {_hintDown_up.visible = false;_hintUp_up.visible = true;_fadeIn.play([_hintUp_up]);}else if (event.newValue >= 3 * PADDING && event.oldValue < 3 * PADDING) {_hintDown_up.visible = true;_hintUp_up.visible = false;_fadeIn.play([_hintDown_up]);}}private function startLoading(event:MouseEvent):void {//下拉 加载方法if (_hintUp.visible) {_busy.includeInLayout = _busy.visible = true;if(_hintDown.visible)_busy_x.includeInLayout = _busy_x.visible = true;setTimeout(updateList, 1000);}_hintDown.visible = false;_hintUp.visible = false;//上拉 加载方法if (_hintUp_up.visible) {_busy_x.includeInLayout = _busy_x.visible = true;if(_hintDown_up.visible)_busy_x.includeInLayout = _busy_x.visible = true;setTimeout(updateList, 1000);}_hintDown_up.visible = false;_hintUp_up.visible = false;}private function updateList():void {_ac.source = new Array();for (var i:int = 0; i < 10; i++) {_ac.source.push(Math.random());}_ac.refresh();_busy.includeInLayout = _busy.visible = false;_busy_x.includeInLayout = _busy_x.visible = false;}]]></fx:Script><s:VGroup width="100%" ><s:HGroup id="_busy" visible="false" width="100%" horizontalAlign="center"  includeInLayout="false" verticalAlign="middle"><s:BusyIndicator height="30"/><s:Label text="加载数据..." fontSize="20"/></s:HGroup><s:List id="_list" width="100%" contentBackgroundColor="#FFFFFF" dataProvider="{_ac}"mouseUp="startLoading(event)"/><s:HGroup id="_busy_x" visible="false" width="100%" horizontalAlign="center"  includeInLayout="false" verticalAlign="middle"><s:BusyIndicator height="30"/><s:Label text="加载数据..." fontSize="20"/></s:HGroup></s:VGroup><s:Label id="_hintDown" visible="false" width="100%" paddingTop="{PADDING}" text="↓ 下拉刷新 ↓" fontSize="20" textAlign="center"/> <s:Label id="_hintUp" visible="false" width="100%" paddingTop="{PADDING}" text="↑ 松手刷新 ↑" fontSize="20" textAlign="center"/><s:Label id="_hintDown_up" visible="false" bottom="0" width="100%" text="↑ 上拉刷新 ↑" fontSize="20" textAlign="center"/><s:Label id="_hintUp_up" visible="false" bottom="0" width="100%" text="↓ 松手刷新 ↓" fontSize="20" textAlign="center"/></s:Application>