?
<?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"
????? xmlns:mx="library://ns.adobe.com/flex/halo" minWidth="1024" minHeight="768">
<fx:Script>
?? <![CDATA[
???
??? import mx.collections.ArrayCollection;
???
??? //添加对象
??? public function insertCollection():void{
???? //方法1
???? //一个花括号代表一个对象
???? var selectType01:String = "东京";
???? var selectType02:String = "横滨";
???? var oneArrayCollection:ArrayCollection = new
ArrayCollection([{label:selectType01, data:1}, {label:selectType02,
data:2}]);
????
???? //方法2
???? var twoArrayCollection:ArrayCollection;
???? var array:Array = new Array();
???? for(var i:Number = 0; i < 10; i++){
????? array.unshift({city:"B" + i, data:i, size:1000 + i});
???? }
???? twoArrayCollection = new ArrayCollection(array);??? //长度为10，也就是有10个对象
????
???? //方法3
???? var threeArrayCollection:ArrayCollection = new ArrayCollection();
???? for(var j:Number = 0; j < 5; j++){??? //添加5个对象
????? threeArrayCollection.addItem({name:"C" + j, sequence:j, ok:"hello" + j});
???? }
???? trace(threeArrayCollection[2].ok);??? //hello2
????
???? //方法4，在指定的索引处添加对象
???? threeArrayCollection.addItemAt({name:"K", sequence:"A", ok:"H"},2);
???? trace(threeArrayCollection[2].ok);??? //H
????
???? //方法5，在制定的索引处添加对象
???? threeArrayCollection.setItemAt({name:"W", sequence:"X", ok:"Q"}, 5);
???? trace(threeArrayCollection[5].sequence);??? //X
??? }
???
??? //删除对象，ArrayCollection相当于数组（数组集合）
??? public function deleteCollection():void{
?????? var delCollection:ArrayCollection = new ArrayCollection();
???? for(var j:Number = 0; j < 5; j++){??? //添加5个对象
????? delCollection.addItem({name:"DEL" + j, sequence:j, ok:"hello" + j});
???? }
???? for(var value:String in delCollection){
??????? trace(delCollection[value].ok);
???? }
???? delCollection.removeItemAt(2);??? //删除第三个元素
???? for(var value2:String in delCollection){
????? trace(delCollection[value2].ok);
???? }
???? delCollection.removeAll();??? //全部删除
???? for(var value3:String in delCollection){
????? trace("=========");
????? trace(delCollection[value3].ok);
???? }
??? }
???
??? //查询对象
??? public function selectCollection():void{
???? var twoArrayCollection:ArrayCollection;
???? var array:Array = new Array();
???? for(var i:Number = 0; i < 10; i++){
????? array.unshift({city:"B" + i, data:i, size:1000 + i});
???? }
???? twoArrayCollection = new ArrayCollection(array);??? //ArrayCollection的构造方法有参数的话则一定是Array对象作为参数
???? if(twoArrayCollection.contains(array[1])){
????? var objIndex:int = twoArrayCollection.getItemIndex(array[1]);??? //返回该项目的索引
????? trace(objIndex);
???? }
//??????? trace("OK");
//???? }
??? }
???
???
?? ]]>
</fx:Script>
<mx:Button id="insertID" x="320" label="添加对象" click="insertCollection();"/>
<mx:Button id="deleteID" x="450" label="删除对象" click="deleteCollection();"/>
<mx:Button id="seleteID" x="600" label="查询对象" click="selectCollection();"/>
<fx:Declarations>
?? <!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
</s:Application>