Get image from web to UIImageView don't works - iphone

Question

I have a big problem with very simple code.
I need to get a picture from a Facebook URL and put it on a UIImageView.
I don't know but don't works.
I have tried different links also (no Facebook links also don't works).
-(IBAction)setUserPhoto:(id)sender{
NSURL *url = [url initWithString:#"http://graph.facebook.com/100000769380612/picture?type=large"];
NSData *imageData = [NSData dataWithContentsOfURL:url];
UIImage *image = [UIImage imageWithData:imageData];
if(image){
NSLog(#"Image OK");
} else if (!image) {
NSLog(#"Error");
}
[userPhoto setImage:image];
}
Thank you.

Answer 1

The string has a substitution variable in it, that hasn't been substituted:
http://graph.facebook.com/%#/picture?type=large
You are missing the alias (thats the error i get if i put this url into safari)
Use
NSString *urlString = [NSString stringWithFormat:#"http://graph.facebook.com/%#/picture?type=large", replacement]; //where replacement is the string that is supposed to go there
NSUrl *url = [NSUrl URLWithString:urlString];
Try the url in the web browser first, to ensure it exists.

Answer 2

You are missing something in url..it contain %# , please replace it with proper string
for eg :
https://graph.facebook.com/DoloresPark/picture?type=large
you URL should be some thing like the above one
-(IBAction)setUserPhoto:(id)sender{
NSString *user = #"DoloresPark";
NSString *urlString = [NSString
stringWithFormat:
#"http://graph.facebook.com/%#/picture?type=large",user];
NSURL *url = [NSURL URLWithString:urlString];
NSData *imageData = [NSData dataWithContentsOfURL:url];
UIImage *image = [UIImage imageWithData:imageData];
if(image){
NSLog(#"Image OK");
} else if (!image) {
NSLog(#"Error");
}
[userPhoto setImage:image];
}

Answer 3

have you tried dataWithContentsOfURL:options:error: and reading the &error for any pointers?

Answer 4

The problem is that you are not making a connection to the URL.Use the following -
NSURLRequest *request = [[NSURLRequest alloc]initWithURL:[NSURL URLWithString:#"Your URL"]];
NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
your class should implement the NSURLConnectionDelegate -
Use the following delegate methods to get the data -
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;
- (void)connectionDidFinishLoading:(NSURLConnection *)connection;
Hope it helps!