Question

I am searching through my DisplayContainer for text fields to change them but i have a problem with changing the reference:

    for (var i:uint = 0, n:uint = rootContainer.numChildren; i < n; ++i) {
        var item:DisplayObject = rootContainer.getChildAt(i);
        if (item is DisplayObjectContainer) {
            updateFields(DisplayObjectContainer(item));
        } else if (item is TextField) {
            item.text  = "hej";
        }
    }

The item.text throws:

1119: Access of possibly undefined property text through a reference with static type flash.display:DisplayObject.

How do i convert it so i can use it?

Answer 1

You need to type it as a TextField before you can call a TextField method on it:

for (var i:uint = 0, n:uint = rootContainer.numChildren; i < n; ++i) {
    var item:DisplayObject = rootContainer.getChildAt(i);
    if (item is DisplayObjectContainer) {
        updateFields(DisplayObjectContainer(item));
    } else if (item is TextField) {
        var textField:TextField = item as TextField;
        textField.text  = "hej";
    }
}