package {    import flash.display.Sprite;    import flash.text.TextField;    import flash.text.TextFieldType;    import flash.text.TextFieldAutoSize;    import flash.utils.Timer;    import flash.events.TimerEvent;    import flash.events.Event;    public class Timer_constructorExample extends Sprite {            private var statusTextField:TextField = new TextField();                    private var inputTextField:TextField = new TextField();            private var delay:uint = 30000;            private var repeat:uint = 3;            private var myTimer:Timer = new Timer(delay, repeat);                    public function Timer_constructorExample() {            inputTextField.x = 10;            inputTextField.y = 10;            inputTextField.border = true;            inputTextField.background = true;            inputTextField.height = 200;            inputTextField.width = 200;            inputTextField.multiline = true;            inputTextField.wordWrap = true;            inputTextField.type = TextFieldType.INPUT;            statusTextField.x = 10;            statusTextField.y = 220;            statusTextField.background = true;            statusTextField.autoSize = TextFieldAutoSize.LEFT;               myTimer.start();             statusTextField.text = "You have " + ((delay * repeat) / 1000)                                  + " seconds to write your response.";            myTimer.addEventListener(TimerEvent.TIMER, timerHandler);            myTimer.addEventListener(TimerEvent.TIMER_COMPLETE, completeHandler);            addChild(inputTextField);            addChild(statusTextField);        }        private function timerHandler(e:TimerEvent):void{            repeat--;            statusTextField.text = ((delay * repeat) / 1000) + " seconds left.";        }        private function completeHandler(e:TimerEvent):void {            statusTextField.text = "Times Up.";            inputTextField.type = TextFieldType.DYNAMIC;            }    }}方法详细信息