Loading image from byte array stream in UITableViewCell

Question

I am implementing a UITableView with custom UITableViewCell. There is UIImageView there for displaying some image. But the api I am given , does not contain the download links of the images that I'll have to show in each UITableViewCell. For getting the images , I'll need to call another GET request that returns byte array stream of the image to be shown on the corresponding Cell.

I know , I can make an Image from NSData coming from the api. But I am not sure how much efficient idea that would be , I am worrying about memory and performance issue. And I want to do asynchronous loading in UITableViewCell and image cacheing also so that It take less time in later calls. So , what can be a efficient approach here ? And also some suggestion about any good library that can help me doing this would be great.

Answer 1

This is how I have solved it. I haven't used caching yet , but this is enough to show them properly in UITableViewCell. Here's the method I have used.

+ (void)downloadImageWithURL:(NSMutableURLRequest *)request completionBlock:(void (^)(BOOL succeeded, UIImage *image))completionBlock
{
    [NSURLConnection sendAsynchronousRequest:request
                                       queue:[NSOperationQueue mainQueue]
                           completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {

                               NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
                               int statusCode = httpResponse.statusCode ;
                               NSLog(@"Status Code Imageloading : %d" , statusCode);

                               if(statusCode == 200){
                                   UIImage *image = [[UIImage alloc] initWithData:data];
                                   NSLog(@"Success");
                                   completionBlock(YES,image);
                               } else {
                                   NSLog(@"Failure");
                                   completionBlock(NO,nil);
                               }
    }];
}