Somebody emailed me recently about this topic, so I came up with a quick and dirty solution. Not sure if there’s a better way, but thought that somebody out there may find this useful, so here it is:
1. Drag a ScrollPane component onto your Stage and give it an instance name of my_scrollPane.
2. Add the following ActionScript to frame 1 of the main timeline. (Watch for wrapping lines!)
my_scrollPane.addEventListener(“complete”, myLoaderCompleteListener);
function myLoaderCompleteListener(eventObj:Object):Void {
if (eventObj.target.getBytesTotal() == -1) {
eventObj.target.visible = false;
var t:TextField = eventObj.target._parent.createTextField(“error_txt”, 10, eventObj.target.x, eventObj.target.y, 100, 20);
t.autoSize = “left”;
t.text = “unable to load file”;
return;
}
// continue setting up.
}
my_scrollPane.contentPath = “http://www.deseloper.com/thisImageFileDoesntExist.jpg”;
3. Save and test.
Because the image file doesn’t exist, the complete event is dispatched to the ScrollPane instance and getBytesTotal() returns -1. The complete listener checks that the image was successfully loaded. If not, the ScrollPane instance is hidden and a text field is created and displays an error message.
Voila.
Comments
Nice Jen. Much cleaner than using setInterval().
Excellent coding Jen. this probably rude of me, since this is off the scrollpane topic, where can I email you regarding a problem that I have ( it is perhaps a good tutorial subject for you. Thois has to do loading icons to a list component thru xmlconnector.
hi jen, jerome here… tried your tutorials for newbies like me. so nice to have these available online. i keep myself updated with your articles. have already tried a few projects myself, and learning more… a roar from the islands of the philippines. thanks, mate!
is there any possibility that i can do this with datagrid also?i mean progress bar to run while a datagrid is being populated with data
**Error** Scene=Scene 1, layer=Layer 1, frame=1:Line 1: Statement block must be terminated by ‘}’my_scrollPane.addEventListener(“complete”, myLoaderCompleteListener); function myLoaderCompleteListener(eventObj:Object):Void { if (eventObj.target.getBytesTotal() == -1) { eventObj.target.visible = false; var t:TextField = eventObj.target._parent.createTextField(“error_txt”, 10, eventObj.target.x, eventObj.target.y, 100, 20); t.autoSize = “left”; t.text = “unable to load file”; return; } // continue setting up. } my_scrollPane.contentPath = “http://www.deseloper.com/thisImageFileDoesntExist.jpg“;Total ActionScript Errors: 1 Reported Errors: 1
hello Jen. im currently exploring the scroll pane component and i just read your topic. any idea why is it when i load several loadClip component within scroll pane, i cannot see the other loadclip component even if the vScrollPolicy is set to “true”.
I’m having a hard time accessing a movieClip inside my scrollPane. I’ve made a function that loads different mc’s using contentPath, but when I try to access buttons on the mc used in the scrollpane like this:var filmstrip = my_sp.spContentHolder;filmstrip.x_mc.x_btn.onRelease = function()etc.it works great the first time, but once I load another mc dynamically, it doesn’t recognize “filmstrip” as the spContentHolder.I know this is a little off topic from the tutorial, but I always find your explanations really great, so I thought I’d give it a try.Thanks!Wendy