how to use sendAsynchronousRequest:queue:completionHandler:

Question

Two part question

Part one: I am trying to create an ASynchronous request to my database. I am currently doing it Synchronously however I want to le

Answer 1

Since sendAsynchronousRequest:urlRequest queue:queue completionHandler: has been deprecated in iOS 9, and it will suggest to use NSURLSession's -dataTaskWithRequest:completionHandler: instead. It is available since iOS 7 and later.

Original:

 NSURL *URL = [NSURL URLWithString:@"http://example.com"];
 NSURLRequest *request = [NSURLRequest requestWithURL:URL];

 [NSURLConnection sendAsynchronousRequest:request
                                    queue:[NSOperationQueue mainQueue]
                        completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
     // ...
 }];

By NSURLSession:

 NSURL *URL = [NSURL URLWithString:@"http://example.com"];
 NSURLRequest *request = [NSURLRequest requestWithURL:URL];

 NSURLSession *session = [NSURLSession sharedSession];
 NSURLSessionDataTask *task = [session dataTaskWithRequest:request
                                         completionHandler:
     ^(NSData *data, NSURLResponse *response, NSError *error) {
         // ...
     }];

 [task resume];