I've tripped on all of those at one time or another, so I'm happy to oblige
with an answer as best I can:
1. It threw me a bit at first, but it makes sense once you look at the types
returned by XML class. If an element of the XML has "complex" content (i.e.
its not just straight text, but rather has additional XML elements or
structure), then referring to that XML element will always return an
XMLList. Thus, when you say "for each (var s:XML in data.lastResult.Tipos)"
the XML class is returning an XMLList for all elements named "Tipos", which
in your sample data there is only one. If you want to iterate for each of a
certain element, you specify that element in the for each like this: "for
each (var s:XML in data.lastResult.Tipos.Tipo)". And to access them directly
with an index, you'd use "var s:XML = data.lastResult.Tipos.Tipo[0];".
2. To dynamically create UI components just new them ("var txt:TextInput =
new TextInput();") and then add them to the container ("addChild(txt);").
For dynamically creating forms the Form and FormItem components are a
lifesaver as they'll save you from having to do any formating work. Your
code will end up looking something like this:
var form:Form = new Form();
var formItem:FormItem = new FormItem();
formItem.label = "Some Field:";
var txtField:TextInput = new TextInput();
formItem.addChild(txtField);
form.addChild(formItem);
addChild(form);
3. You can load data from a ByteArray into things like the image component.
Assuming you've already got the binary data pulled from the database, and
assuming its in a format that Flash understands directly (SWF, PNG, JPG,
GIF, etc.), you can use the "loadBytes()" method of the
flash.display.Loaderclass. This will give you a DisplayObject that you
can then use elsewhere as
you would traditionally use a dynamically loaded image.
Troy.
On 2/22/07, Daniel Fernandes Credidio <[EMAIL PROTECTED]> wrote:
Hi,
I'm quite new to Flex and I need help with Three things.
I have an file thats sending me an XML based on data i got from the DB,
I have to loop trough the XML and i saw in another thread that we can
do it by using the code:
//the XML
<Tipos>
<Tipo>
<Situa>0</Situa>
<Imagem Conteudo=''/>
<Qtd>Computador: 11</Qtd>
</Tipo>
<Tipo>
<Situa>0</Situa>
<Imagem Conteudo=''/>
<Qtd>Monitor: 9</Qtd>
</Tipo>
<Tipo>
<Situa>0</Situa>
<Imagem Conteudo=''/>
<Qtd>No break: 3</Qtd>
</Tipo>
<Tipo>
<Situa>0</Situa>
<Imagem Conteudo=''/>
<Qtd>Notebook: 3</Qtd>
</Tipo>
</Tipos>
for each (var s:XML in data.lastResult.Tipos){
//some code here
}
the first problem is that it only loops once even tough there are 3.
the second is that i need to add components(TextArea, Image, Label,
etc.)on a Panel, but i must do it Using AS3 since its going to be
created based on the XML(i searched livedocs AND flex help but didn't
find it).
the third one is the most tricky of the three, I an getting the image
from the DB and its binary i need to send it into flex and use it as a
kind of source to the Image component
PS: its not an URL its the data itself.
i know it can be rather confusing but please answer me even if its to
say its impossible to do this.
Gratefull for your help,
Daniel Fernandes Credidio
