如何在后台加载图像时快速加载内容? [英] How to load content fast with images loading in background?

问题描述

我想在后台加载图像，然后先加载内容.我尝试下面的代码，但没有工作.怎么了?帮帮我
预先谢谢你.

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];
   }
}

推荐答案

首先获取所有图像的内容(所需)和url，显示所有内容，然后开始在后台下载所有图像.

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.

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