fetch image by using url - objective-c

Question

I want image on view by fetching it from some url. I want changing in given code..
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
UIImage *image = [[UIImage imageNamed:<#(NSString *)name#>
NSString * mediaUrl = [[[self appDelegate]currentlySelectedBlogItem]mediaUrl];
[[self image]setImage:[UIImage imageNamed:#"unknown.jpg"]];
if(nil != mediaUrl){
NSData* imageData;
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
#try {
imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:mediaUrl]];
}
#catch (NSException * e) {
//Some error while downloading data
}
#finally {
UIImage * imageFromImageData = [[UIImage alloc] initWithData:imageData];
[[self image]setImage:imageFromImageData];
[imageData release];
[imageFromImageData release];
}
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
}
self.titleTextView.text = [[[self appDelegate] currentlySelectedBlogItem]title];
self.descriptionTextView.text = [[[self appDelegate] currentlySelectedBlogItem]description];
}

Answer 1

Using this will give you a solution
NSURL *url = [NSURL URLWithString:#"ENTER YOUR URL HAVING THE IMAGE"];
NSData *data = [NSData dataWithContentsOfURL:url];
UIImage *image = [UIImage imageWithData:data];

Answer 2

I have used the following:
NSString *url=[NSString stringWithFormat:#"Your URL"];
//NSLog(#"URL=%#",url);
UIImage *myImage=[[UIImage alloc] initWithData:[NSData UIImage *myImage=[[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: url]]];
NSLog(#"%d byte of data", [[NSData dataWithContentsOfURL: [NSURL URLWithString: url]] length]);
if (myImage)
{
//THIS CODE WILL STORE IMAGE DOCUMENT DIRECTORY
NSString *jpegFilePath = [NSString stringWithFormat:#"%#/%#.jpg",[self pathForDocumentDirectory],[self.idOfImagesToDownload objectAtIndex:i]];
NSData *data1 = [NSData dataWithData:UIImageJPEGRepresentation(myImage, 1.0f)];//1.0f = 100% quality
[data1 writeToFile:jpegFilePath atomically:YES];
}
NOTE:[self pathForDocumentDirectory] is method returning path of document directory.