Getting a 0 when converting text to a number. need help.

Hello world

I am in 2nd year CS design my 1st app for blackberry. I use the code provided by RIM as my starting base.

My problem is that when I convert a text in a number input using parseInt (foo.text) or (foo.text) Number I have a 0 instead of the number entered by the user. Here is the code I wrote for user input:

var myInput:TextField = new TextField();
addChild (myInput);

myInput.type = "input";
myInput.border = true;
myInput.x = 140;
myInput.y = 40;
myInput.width = 125;
myInput.height = 20;

var n: Number = Number (myInput.text);

var ntring = String (myInput.text);

var firstnum = Number (n);
trace (n);

the trace function returns a 0. I also tried this:

var firstnum:TextInput = new TextInput();
newUfirstnum.width = 200;
newfirstnum.x = 140;
newUfirstnum.y = 65;
newfirstnum. Height = 20;
addChild (firstnum);

var input: int = parseInt (firstnum.text);

trace (Input);

Does anyone know why I get a 0 and what I can do about it? Any advice would be helpful.

Thank you.

Hey,.

just a follow-up in case you're having trouble, here is a working application that uses the same variables as you did. It is an object TextInput (QNX) and a tag button that click you on to see what the variable text in the TextInput object. When you click on it will trace the value in the debugger:

package
{
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.events.MouseEvent;

    import qnx.ui.buttons.LabelButton;
    import qnx.ui.text.TextInput;

    [SWF(width="1024",height="600",backgroundColor="#CCCCCC",frameRate="30")]
    public class TextInputTest extends Sprite
    {
        /**
         *
         * Place your variables outside of the constructor
         * it makes it easier to work with when using
         * other functions like listener functions
         *
         */
        private var firstnum:TextInput;
        private var myBtn:LabelButton;

        public function TextInputTest()
        {
            super();

            // support autoOrients
            stage.align = StageAlign.TOP_LEFT;
            stage.scaleMode = StageScaleMode.NO_SCALE;

            /**
             * Create your TextInput object just as you did
             * before, only this time we wont try to trace
             * the data in it right away
             */

            firstnum = new TextInput();

            firstnum.width = 200;
            firstnum.x = 140;
            firstnum.y = 65;
            firstnum.height = 52;

            addChild(firstnum);

            /**
             * We are going to create a label button
             * that allows us to listen for a MouseEvent.CLICK
             * (mouse click) that will tell the application
             * to trace out our data
             *
             */

            myBtn = new LabelButton();
            myBtn.label = "Trace!";
            myBtn.setSize(150,52);
            myBtn.setPosition(375, 65);

            /**
             * This is the important line, to add a listener. We
             * tell the application to add a mouse click event
             * listener and we will run the onClick function when
             * there is a click
             *
             */

            myBtn.addEventListener(MouseEvent.CLICK, onClick);

            addChild(myBtn);
        }

        private function onClick(e:MouseEvent):void
        {
            /**
             *
             * here is where we will do our conversion and
             * output via the trace function
             *
             */

            var input:int = parseInt(firstnum.text);

            trace(input);
        }

    }
}

I've inserted comments to help you along the way. also, I want that you notice that ActionScript (Adobe AIR) is all based event. Therefore, use events and listeners to get things moving. hope that helps a little more. Good luck!

Tags: BlackBerry Developers

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