Comments on: Flash Actionscript 101, The First ActionScript I Ever Learned

By: John

John — Wed, 04 Mar 2009 05:44:18 +0000

Hi,
WOW! Thanks so much, this took a while for me to figure out, but I got it`-`
First I think that I got a index out of bounds error, as when I was clicking on 3 there was no reference, as the array only goes to 2, since it starts at zero. I was using imgBtn.id = int(arrCnt); instead of what it should be imgBtn.id = int(p); as we are only using the new variable arrCnt has the display number and not the variable p which holds the items in the array? Not sure if I say that right, but below is the whole loop, and how I got it working:

var arrCnt:int = 1; // set the starting number

for(var p:String in imageArr){

// create new ImageButton
var imgBtn:ImageButton = new ImageButton();

// add a button label
imgBtn.labelText.text = “Image ” + int(arrCnt);

// give the button a id from “p” which references the index
// of the current item in the array.
imgBtn.id = int(p);

// set the y property using the buffHeight variable.
imgBtn.y = buffHeight;
imgBtn.x = 20;

// add the eventListener to capture the button clicks
imgBtn.addEventListener(MouseEvent.CLICK,clickHandler);

//add the button to the stage.
addChild(imgBtn);

//update the variable with the height of this button, so the next button’s y position will be below it.
buffHeight += imgBtn.height + 5;
arrCnt++
}

Thanks so much for your help`-`
Johnny

By: taterboy

taterboy — Tue, 03 Mar 2009 13:37:31 +0000

p is declared as a string, it is the only variable type the “in” for loop will except. We can parse p into an number or integer in most cases like this.

int(p) or Number(p).

int(p) + 1; should give you a number sequence starting with 1.

If that does not work, then you can always add a new variable to count up for you. Before the for loop declare a new variable like this.

var arrCnt:int = 1; // set the starting number
for(var p:String in imageArr){
// use the arrCnt variable to make id an integer starting at 1.
imgBtn.id = arrCnt;
// increase arrCnt every cycle of the array; 1,2,3,4,5,6
arrCnt ++;
}

By: John

John — Tue, 03 Mar 2009 05:25:26 +0000

Yeah I know what you mean, typos are so easy to make. I am glad I caught it too`-`
Can I ask–> how would I change the numbering to not include the first array item as 0? That is to have 1,2,3 instead of 0,1,2?

I see in the As code that there is :
// add a button label
imgBtn.labelText.text = “Image ” + p;

// give the button a id from “p” which references the index
// of the current item in the array.
imgBtn.id = int(p);

I tried using “p+1″ in step up one number but no luck.

Thanks so much for showing these examples on your blog`-“
Johnny

By: taterboy

taterboy — Mon, 02 Mar 2009 14:08:03 +0000

Thanks for catching that, I really need a good editor. Typos, are one of the biggest bug creators.

By: John

John — Sun, 01 Mar 2009 10:30:26 +0000

WOW! Great post, especially for a newbie like me`-`
I found a typo, or at least I could not get it working until I changed fruit to fruitArr in the for() Loop: section.

Thanks so much for making this post, I feel thank to you that I am actually understanding As 3`-`

Next I have to learn how to make such a cool interface too`-`

Thanks,
Johnny