Objective-C : Requesting and handling a response #objective-c #api #request #handling

request_handling.m

-(void) request{
  NSString *targetUrlString = @"url";
  NSURL *targetUrl = [NSURL URLWithString:targetUrlString];
  NSData *data     = [NSData dataWithContentsOfURL:targetUrl];
  [self performSelectorInBackground:@selector(callback:) withObject:data];  
}

-(void) callBack:(NSData*)respondedData{
  NSError *error;
  NSDictionary *dataDic  = [NSJSONSerialization
                            JSONObjectWithData:respondedData
                            options:kNilOptions 
                            error:&error];
  NSNumber *returnedCode = [dataDic objectForKey:@"StatusCode"];

  if([@"200" isEqualToString:[returnedCode stringValue]]){
    // do something
  }
}