Flex 創建自動關閉Alert

方法1：

private function showAndHide():void 

{
var alertText:String = "哈哈";
var alertTitle:String = "Timed Alert";
alert = Alert.show(alertText, alertTitle);
setTimeout(hideAlert, 1000);

}
private function hideAlert():void 

{PopUpManager.removePopUp(alert);}

方法2：

 private var alert:Alert;
 private var alrtTimer:Timer;

 private function init():void 

{
alrtTimer = new Timer(5000, 1);
alrtTimer.addEventListener(TimerEvent.TIMER_COMPLETE, removeAlert);
}

private function showAndHide():void 

{
var alertText:String = "哈哈";
var alertTitle:String = "Timed Alert";
alert = Alert.show(alertText, alertTitle);
alrtTimer.reset();
alrtTimer.start();

}
private function removeAlert(evt:TimerEvent):void

{
PopUpManager.removePopUp(alert);
}