Question

In my view controller I have two UIScrollViews. One is to display latest news updates from server and other is to display some images from the server. So I have to parse two json feeds for these data. I am using ASIHTTPRequest for the network services.

So in my -viewWillAppear: method I’m calling two separate asynchronous instances of ASIHTTPRequest

-(void)viewWillAppear{

    call news JSON and parse
    call image JSOn and parse

    process news Data and display the data in UI
    process image Data and display
}

So which is better here to use a ASIQueue or two different instances of ASIHTTPRequest?

Answer 1

It seems all programmatic from your pseudocode for viewWillAppear:. So I’d say use an ASINetworkQueue and set the completion handlers of the requests to a function which will action the appropriate display calls:

- (void)viewWillAppear
{
    // init news ASIHTTPRequest (set completion handler to newsDownloaded:)
    // init image ASIHTTPRequest (set completion handler to imagesDownloaded:)
    // add both of the requests to [ASINetworkQueue sharedQueue]
}

- (void)newsDownloaded:(ASIHTTPRequest *)request
{
    // parse news JSON
    // process news Data and display the data in UI
}

- (void)imagesDownloaded:(ASIHTTPRequest *)request
{
    // parse image JSON
    // process image Data and display
}

Or, instead of using methods, you can write the parse and processing code in a code block and set completionBlock on the ASIHTTPRequests.