LoadVars and listener functions

Question

Hi all...I posted yesterday with some trouble getting
loadvariables to work. I have since changes the code to use the
LoadVars class instead but I am still have the same issue as
before. The request for variables from the server does not complete
and the values do not get set before the variables need to be used.
I have a simple flash movie with 1 input text box (name_txt),
1 button (Submit) and 1 dynamic text box (lblOutput).
I have a simple script on the button:
on (release) {
//loadVariables("dev.aspx?foo=" + name_txt.text, "POST");
newVars = new LoadVars();
newVars.load("dev.aspx?foo="+_level0.name_txt.text);
//This line just visually shows me that the script makes it
this far
_level0.lblOutput.text += "This is hard coded
text.<br>";
_level0.lblOutput.text += newVars.retVal;
I have a very simple asp page that returns the value:
'Format the response
Response.ContentType = "application/x-www-form-urlencoded"
'Create a string and
Dim foo As String = "&retVal=" &
Request.QueryString("foo") & " - This is from the ASP
Page.<br>"
Trace.Warn(foo.ToString)
Response.Write(foo.ToString)
Response.End()
When I load the Flash movie and type the word "test" into the
input field and click submit...I can see that Flash sends the
variable to the asp page by checking the asp trace information. The
value comes into asp just fine but, as I understand it, I need some
sort of listener function to force Flash to wait for the
transaction to complete before trying to load the use the variable
values.
Could someone please explain how I can add this listener
functionality to the script above? Many thanks!!

Answer 1

You need a stop() on the frame doing the load and onLoad.
Then in the onLoad
you move to the next frame. Other approaches include hiding
the UI and in
the onLoad, revealing the UI such as a MovieClip cover is
made invisible.
Declare the results LoadVars object on the timeline outside
of a function
and it is accessible for the entire movie at all levels.
Lon Hosford
www.lonhosford.com
May many happy bits flow your way!
"nagromme" <[email protected]> wrote in
message
news:e4fpvm$qmq$[email protected]..
I'm using LoadVars in Frame 1, and I need to use the
resulting variables in
other scripts afterwards. (But all the examples I find online
only use the
variables right in the same script.)
The problem I'm having is, the onLoad function doesn't
actually make it
wait.
It goes ahead to the next frame whether fully loaded or not.
It depends on
the
connection at the moment--if the vars haven't fully loaded,
hilarity ensues.
<b>My script in Frame 1:</b>
_root.myloadvars = new LoadVars();
_root.myloadvars.load("datapairs.txt");
_root.myloadvars.onLoad = function(success) {
if (success) {
//trace("TXT RETRIEVED");
gotoAndPlay(2);
} else {
trace("TXT NOT RETRIEVED");
gotoAndPlay(1);
<b>It's SUPPOSED to hold in Frame 1 until ready to
proceed and make use of
the
variables in Farme 2.
Things I have tried:</b>
* Moving the above to Frame 2, so the "not retrieved" loop
actually has two
frames to cycle (back to 1, then forward to 2 where the
script it).
* Adding an additional gotoAndPlay(1) BELOW the above.
But regardless, it never goes back to Frame 1, it always
goes forward. It
reports success, but half the time the variables (or some of
them) are still
Undefined.
What's the RIGHT way to wait in a frame for LoadVars, and
then let other
scripts use the variables afterwards?
<b>Many thanks for any advice!</b>
(PS, this is Flash MX--I'm waiting for Universal Binary
before I upgrade.)