Question

When i press keyboard down button the textfield is added to sprite but not through timer event call. Why is that ?

package
{

    import flash.display.Sprite;
    import flash.events.KeyboardEvent;
    import flash.text.TextField;
    import flash.utils.Timer;
    import flash.events.TimerEvent;

    public class Test extends Sprite
    {

        public function Test()
        {
            var timer:Timer = new Timer(3);

            stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
            timer.addEventListener(TimerEvent.TIMER, onTime);
            timer.start();

        }

        function onKeyDown(event:KeyboardEvent):void {

            //          graphics.lineStyle(10,Math.random() * 10000, 10);
            //          graphics.drawCircle(100, 100, 80);  

            var txtFld:TextField = new TextField();

            txtFld.x = 200;
            txtFld.y = 200;
            txtFld.width = 25;
            txtFld.height = 15;
            txtFld.text = "90";         

            addChild(txtFld);
        }



        function onTime(event:Timer):void {


            var txtFld:TextField = new TextField();

            txtFld.x = 100;
            txtFld.y = 100;
            txtFld.width = 25;
            txtFld.height = 15;
            txtFld.text = "80";     

            addChild(txtFld);
        }

    }

}

Answer 1

In the timer event handler, you’ve cast the incoming event object as Timer, not TimerEvent. This causes Flash player to throw an error.

Also, this code will continue to add TextFields because the Timer is looping and calling this function on every loop.

function onTime(event:TimerEvent):void {
    //stop the timer
    evt.target.stop();

    var txtFld:TextField = new TextField();

    txtFld.x = 100;
    txtFld.y = 100;
    txtFld.width = 25;
    txtFld.height = 15;
    txtFld.text = "80";     

    addChild(txtFld);
}