can't download image from web - objective-c

Question

So I have this method to download an image from imgur.com as shown below:
- (void)getImageForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSURL *url=[NSURL URLWithString:[NSString stringWithFormat:#"i.imgur.com/%#.jpg",
[self.IDArray objectAtIndex:indexPath.row]]];
NSData * imageData = [[NSData alloc] initWithContentsOfURL:url];
self.imageTest = [UIImage imageWithData: imageData];
}
and then log the size of the data with this:
NSLog(#"%lx", (unsigned long)imageData.length);
but the size of the image in the log says
0
previously I use this asynchronous method:
- (void)getImageForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSURL *url=[NSURL URLWithString:[NSString stringWithFormat:#"i.imgur.com/%#.jpg",
[self.IDArray objectAtIndex:indexPath.row]]];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:urlRequest
queue:[NSOperationQueue currentQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
UIImage *imageMain = [UIImage imageWithData:data];
self.imageTest = [[UIImage alloc] init];
self.imageTest = [self imageWithImage:imageMain forRowAtIndexPath:indexPath];
}];
self.imageTest = [UIImage imageWithData: imageData];
}
but the log also says 0
yes the url exist. I have log it in another another method it is: i.imgur.com/EXtwoxT you can see for yourself
What did I do wrong? how do I check that the image has been downloaded properly?
EDIT :
for those who says it's the URL you can see my actual log below. you can copy&paste the URL in your browser to see if it exist (it does)
- (void)getImageForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSURL *url=[NSURL URLWithString:[NSString stringWithFormat:#"i.imgur.com/%#.jpg",
[self.IDArray objectAtIndex:indexPath.row]]];
NSLog(#"i.imgur.com/%#.jpg", [self.IDArray objectAtIndex:indexPath.row]);
//Asynchronous handler
// NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
// [NSURLConnection sendAsynchronousRequest:urlRequest
// queue:[NSOperationQueue currentQueue]
// completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
// UIImage *imageMain = [UIImage imageWithData:data];
// self.imageTest = [[UIImage alloc] init];
// self.imageTest = [self imageWithImage:imageMain forRowAtIndexPath:indexPath];
// NSLog(#"%lx", (unsigned long)imageData.length);
// }];
//Synchronous handler
NSData * imageData = [[NSData alloc] initWithContentsOfURL:url];
self.imageTest = [UIImage imageWithData: imageData];
NSLog(#"%lx", (unsigned long)imageData.length);
}
2015-01-06 07:44:26.564 Huckleberry[12733:361944] i.imgur.com/EXtwoxT.jpg
2015-01-06 07:44:26.600 Huckleberry[12733:361944] 0

Answer 1

First off, your code is missing a protocol for the URL -- NSURL can handle different protocols and doesn't just default to http. Prefix http:// to your URL and see if that gets you some data.
Secondly, that URL isn't actually the URL of the image -- I believe that URL will return the whole HTML imgur page, which is most likely not what you want (since you're trying to create a UIImage with the data).
Instead, try looking into the Imgur API (https://api.imgur.com) -- there's even a link on that page to an example Obj-C library (https://github.com/geoffmacd/ImgurSession)