Flex学习笔记（二）——数组的操作（Array）

最新推荐文章于 2023-03-16 19:40:15 发布

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本文通过实例演示了在Flex中如何使用不同的方法来操作数组，包括添加、删除元素，排序及反转等。并展示了如何对包含对象的数组进行排序。

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对数组的操作：

<?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/mx"
			   minWidth="955" minHeight="600" backgroundColor="#4A3E3E" creationComplete="init()">
	<fx:Declarations>
		<!-- Place non-visual elements (e.g., services, value objects) here -->
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			internal function init():void{
				var tempArr:Array = new Array();
				//插入一个I
				tempArr.push("I");
				//表头插入一个love
				tempArr.unshift("Love");
				//
				tempArr.splice(1,0,"you");
				list1.dataProvider = tempArr;
				
				var books:Array = new Array("IBM","APPLE","SUN","ADOBE");
				
				books.pop();
				books.shift();
				books.splice(0,1,"MICROSOFT","ORACLE");
				list2.dataProvider = books
					
				var sortArray:Array = new Array(1,25,35,2,10);
				sortArray.sort(Array.NUMERIC | Array.DESCENDING);
				var reverseArray:Array = new Array();
				for(var i:int = 0; i <sortArray.length;i++){
					reverseArray.push(sortArray[i]);
				}
				list3.dataProvider = reverseArray;
				sortArray.reverse();
				list4.dataProvider = sortArray;
				
				var students:Array = new Array();
				students.push({name:"Jack",age:20});
				students.push({name:"Tom",age:17});
				students.push({name:"Ricky",age:19});
				
				students.sortOn("age",Array.NUMERIC);
				var data:Array = new Array();
				for(var j:int = 0;j<students.length;j++){
					data.push(students[j].name+":"+students[j].age)
				}
				list5.dataProvider = data;
				
			}
		]]>
	</fx:Script>
	<mx:List id="list1" x="10" y="0" width="100" height="192"/>
	<mx:List id="list2" x="114" y="0" width="100" height="192"/>
	<mx:List id="list3" x="222" y="0" width="100" height="192"/>
	<mx:List id="list4" x="330" y="0" width="100" height="192"/>
	<mx:List id="list5" x="438" y="0" width="100" height="192"/>
</s:Application>

运行结果如下：