Re: Displaying jpeg images
Re: Displaying jpeg images
- Subject: Re: Displaying jpeg images
- From: "Michael P. Rogers" <email@hidden>
- Date: Sat, 9 Jun 2001 21:24:26 -0500
At 2:11 PM -0400 6/9/01, email@hidden wrote:
- (IBAction)refreshImage:(id)sender
{
NSImage *img;
NSURL *url = [NSURL URLWithString: @"http://www.somesite.com/cgi-
bin/image.pl"];
NSLog(@"url = %@", url);
img = [[NSImage alloc] initWithContentsOfURL: url];
NSLog(@"img = %@", img);
[MyImage setImage: img];
[img release];
}
Did you ever get an answer as to why this doesn't work? Here's what
I know (which, to quote Michael Feldman, is not much ;-).
1. Your problem isn't with jpegs per se, those work fine.
2. As a test, a file in my local web site
(/Users/me/Sites/images/Cone.jpeg) displayed via the file: scheme,
but not the http: scheme. Could this mean that NSURL is only going
to load local files? That would seem to be a *highly* limiting
factor. But a quick "Yes" or "No" from somebody who knows at this
point would be helpful.
NSURL conforms to NSURLHandleClient, which means it implements this method:
- (void) URLHandle:(NSURLHandle *)sender
resourceDidFailLoadingWithReason:(NSString *)reason
The description says that this is *sent* when the URL fails to load,
but, um, not to whom. If I could get a handle (so to speak) on
reason (which I am rapidly losing trying to figure this out :-) I
would print it out. Hopefully that would provide some enlightenment.
Sorry I can't be of more help. One last interesting note. Through this code,
NSURL * earl = [NSURL URLWithString:@"
http://localhost/me/images/cone.jpeg";];
id handyEarl = [NSURLHandle URLHandleClassForURL:earl];
I discovered that NSURLs are handled by NSHTTPURLHandle, but
unfortunately I can find no documentation. I had hoped that it was a
type of NSURLHandle (I mean, it certainly sounds like it), but it
didn't respond to the failureReason method.
Good luck.
Michael
--
---------------------------------
Dr. Michael Rogers
e-mail: email@hidden
Phone: 217-424-6327
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