How to load content fast with images loading in background?

Question

I want to make image load in background and let content load first. I tried below code but didnt work. What is wrong? Help me.
Thank you in advance.

- (void)viewDidLoad
{
   [super viewDidLoad];

   NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"site.com/json.php"]];
   [[NSURLConnection alloc] initWithRequest:request delegate:self];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
   NSError *myError = nil;
   NSDictionary *res = [NSJSONSerialization JSONObjectWithData:self.responseData options:NSJSONReadingMutableLeaves error:&myError];

   self.recipes = [[NSMutableArray alloc] init]; 
   for(NSDictionary *dic in res){
       Recipe *recipe = [[Recipe alloc] init];
       recipe.name = [dic objectForKey:@"title"];

        recipe.imageName = [NSString stringWithFormat:@"site.com/iphone_images/%@",[dic objectForKey:@"imageName"]];


       [recipes addObject:recipe];

       [myTableView reloadData];
   }
}

Your question is not clear. First get content (which you need) and url of all the images , show all the content and then start downloading of all image in the background — Dinesh Kaushik, Mar 01 '14 at 17:53
I think your solution is not working because you are lack of essential knowledge about working with multiple threads. first you should read this: https://developer.apple.com/library/ios/documentation/General/Conceptual/ConcurrencyProgrammingGuide/Introduction/Introduction.html, if you are still stuck, present your solution for discussion. — holex, Mar 01 '14 at 19:11
@holex, i will go through it. The way i have done is mentioned bellow. Thank you. — Santosh, Mar 02 '14 at 05:15

score 1 · Answer 1 · answered Mar 02 '14 at 13:01

1

First get content (which you need) and url of all the images , show all the content and then start downloading of all image in background.

answered Mar 02 '14 at 13:01

Dinesh Kaushik

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score 0 · Answer 2 · answered Mar 01 '14 at 18:43

0

Please use AFNetworking to download the contents,also to download the images in the background ,AFNetworking comes with the UIImageView category which would be very much helpful.

answered Mar 01 '14 at 18:43

Nassif

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score 0 · Answer 3 · answered Mar 01 '14 at 18:48

Here's code that is part of a complete downloadable example showing how to put up a UITableView, download the related images in the background, and add them to the table when they arrive:

https://github.com/mattneub/Programming-iOS-Book-Examples/blob/master/bk2ch24p842downloader/ch37p1099downloader/MyTableViewController.m

How to load content fast with images loading in background?

3 Answers3

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