Updating an array.

[ahmednuaman]

Let's say I've got this:



<mx:ButtonBar itemClick="clickHandler(event);">
<mx:dataProvider>
<mx:Array id="ArrayToFill">
<mx:String>Bob</mx:String>
</mx:Array>
</mx:dataProvider>
</mx:ButtonBar>


And I want to update the array 'ArrayToFill' via AS once the app has loaded. How do I do that?

[amarghosh]

i haven't done much Flex'ing --- but i think this is what u want.

<mx:ButtonBar itemClick="clickHandler(event);" dataProvider="{arrayToFill}" creationComplete="onCreated()">
</mx:ButtonBar>
<mx:Script>
<![CDATA[
[Bindable]
public var arrayToFill:Array;
public function onCreated():void
{
//assign new array and fill it here.
//or if u wanna do it dynamically, u can write it in another method that can be called from outside;
}
]]>
</mx:Script>

[ahmednuaman]

I see, awesome, thanks!

[Stratification]

Actually you don't need to declare a variable for arrayToFill in your code, it's already there. MXML basically gets converted to ActionScript on compile. So just treat arrayToFill like it's already there and a public variable and go from there. Hopefully that makes sense.

[amarghosh]

Actually you don't need to declare a variable for arrayToFill in your code, it's already there. MXML basically gets converted to ActionScript on compile. So just treat arrayToFill like it's already there and a public variable and go from there. Hopefully that makes sense.

u mean we can do something like this? but its giving me "access of undefined property arrayToFill" at compile time. am using Flex Builder 3;

Also, if that was the case, and i declare arrayToFill explicitly in the code, would it hide the automatically defined variable?

<mx:ButtonBar itemClick="clickHandler(event);" dataProvider="{arrayToFill}" creationComplete="onCreated()">
</mx:ButtonBar>
<mx:Script>
<![CDATA[
public function onCreated():void
{
arrayToFill = new Array(1, 2, 3);
}
]]>
</mx:Script>

[ahmednuaman]

Is it better to use creationComplete within the <mx:Application> tag than locally with tags?

[Stratification]

You still have to declare it somewhere. Your earlier code had it in the MXML, so you could have just used it. The later example doesn't have it declared anywhere. As far as creationComplete, it depends on what you want to fire on. I usually have mine on the Application tag though.

[ahmednuaman]

Yeah seems like that's the better idea.

[amarghosh]

Okay, now i see what u r saying.