Adobe Flex迷你教程 — Super easy实现Mac系统下滑式Alert窗口

这段code是参考kevin先生的，我简单做了修改。

package comalert
{
    import flash.display.DisplayObject;
    import flash.display.Sprite;
    
    import mx.controls.Alert;
    import mx.core.Application;
    import mx.core.FlexGlobals;
    import mx.effects.Move;
    import mx.effects.Parallel;
    import mx.effects.WipeDown;
    import mx.effects.WipeUp;
    import mx.managers.PopUpManager;

    public class KAlert
    {
        public function KAlert()
        {
        }
        public static function show(text:String,modal:Boolean = false):void{
            var alert:Alert = new Alert();
        
            //setAppleStyle(alert);
            setOpenEffect(alert);
            
            alert.text = text;
            var parent:Sprite = Sprite(FlexGlobals.topLevelApplication);
            alert.x = FlexGlobals.topLevelApplication.width/2-100;
        
            PopUpManager.addPopUp(alert, parent, modal);
            
            alert.setActualSize(alert.getExplicitOrMeasuredWidth(), alert.getExplicitOrMeasuredHeight());
            
        }
        private static function setOpenEffect(alert:Alert):void{
            var wipeUp:WipeUp = new WipeUp(); //Wipe效果，方向向上
            var move:Move = new Move(); //移定效果
            var parallel:Parallel = new Parallel(); //加入其中的效果会被并发执行
            parallel.addChild(move);
            parallel.addChild(wipeUp);
            
            //设置弹出框在正中央
            move.xFrom = FlexGlobals.topLevelApplication.width/2-100;
            move.xTo = FlexGlobals.topLevelApplication.width/2-100;
            
            //弹出时从－100移动到100，同时wipeUp
            move.yFrom = 100;
            move.yTo = 200;
            //动画执行时间为300毫秒
            wipeUp.duration = 1000;
            move.duration=1000;
            //在当前控件被加入舞台时执行
            alert.setStyle("addedEffect",parallel)
        }
    }
}

下面为主应用程序的代码

<?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">
    
    <fx:Script>
        <![CDATA[
            import comalert.KAlert;
            protected function button1_clickHandler(event:MouseEvent):void
            {
                // TODO Auto-generated method stub
                KAlert.show("Test Slide Effect");
            }
        ]]>
    </fx:Script>
    
    <fx:Declarations>
        <!-- 将非可视元素（例如服务、值对象）放在此处 -->
    </fx:Declarations>
    <s:Button id="SlideAlert" click="button1_clickHandler(event)"/>
        

</s:Application>