[]对象池的使用

private function creatRen(lei):void
{
var url:String
switch(lei){
case 1:
url = "tu/白.png"
break;

case 2:
url = "tu/花旦.png"
break;

case 3:
url = "tu/zhadan.png"
break;
}
var nan:Image = Pool.getItemByClass("nam", Image);
nan.skin = url;
nan.x = Math.random() * 600 + 80;
nan.y =-60;
this.addChild(nan);

}


private function delRen():void
{
if(arr.length){
for (var i:uint = 0; i < arr.length; i++ ){
if (arr[i].y > 800){
Pool.recover("nan", Image);

}
}arr[i].visible = false ;


};
}