Problem regarding webservices image cant displayed in the out put - iphone

Question

NSURL *url=[NSURL URLWithString:elementurl];
NSLog(#"url %#", url);
NSData *data = [NSData dataWithContentsOfURL:url];
NSLog(#"data = %#, length = %i", data, [data length]);
UIImage *image = [[UIImage alloc] initWithData:data];
[data release];
iam not getting the data can any one suggest another method

Answer 1

pragma mark --------------------------
pragma mark Load UserImage
-(void)loadUserImage{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSString *frameImagePath = [profileInfoDict objectForKey:#"photo"];
imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:frameImagePath]];
if([imageData length] == 0){
/*NSString *imagePath = [[NSString alloc] initWithFormat:#"%#/%#",[[NSBundle mainBundle] resourcePath],#"no_image.png"];
UIImage image = [[UIImage alloc] initWithContentsOfFile:imagePath];
[item setObject:image forKey:#"itemImage"];
[imagePath release];
[image release];/
}
else {
[self performSelectorOnMainThread:#selector(imageget:) withObject:imageData waitUntilDone:NO];
}
[pool release];
}
-(void)imageget:(NSData *)data
{
UIImage *image = [[UIImage alloc] initWithData:data];
userImageImageView.contentMode = UIViewContentModeScaleAspectFit;
userImage=image;
userImageImageView.image = image;
[[mAppDelegate.userInfoArray objectAtIndex:1] setValue:image forKey:#"Image"];
}

Answer 2

The method you have used is good for small images. If you are trying to download big images it will not do it properly.
You can use the below code
NSURLRequest* request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60];
connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
To establish connection
(void)connection:(NSURLConnection *)theConnection didReceiveData:(NSData *)incrementalData
(void)connectionDidFinishLoading:(NSURLConnection*)theConnection
(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
and above method is used to receive data, error handling etc...
Now apply your own logic by using this methods.