Question

I am working in an application in which I Am getting data from web service in json format for each and every page and also sending data to remote data base.In this process my application is getting slow .Until the data is fetched from web service the next view is not loaded.It is consuming a lot of time, is there any way to fetch data and show view simultaneously.I heard about thread programing but I Am not familiar with it .Please suggest me which technique I should adopt to make my application faster.any help will be appreciated.

Answer 1

For your purposes, it would be easiest to just use the standard NSURLConnection. It is asynchronous out of the box. In the completion handler you can e.g. update your UI, or notify it to update itself.

NSURLRequest *request = [NSURLRequest requestWithURL:
   [NSURL URLWithString:urlString]];
[NSURLConnection sendAsynchronousRequest:request
   queue:self.queue
   completionHandler:^(NSURLResponse *response, NSData *data, NSError *error){
       // do something with data or handle error
   }];