Multiple Data Sources In Single Table View - ios

Question

I am making two separate requests to obtain JSON from external sources, I have so far implemented the display of the data from the first request into my table view. My problem is, I need to combine both sets of data into a single table view and sort the data by a common key, which in this case is created_time. I understand I can use some form of array, but how would I go about doing this?
The first:
NSURL *url = [NSURL URLWithString:myURL];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFJSONRequestOperation *operation = [AFJSONRequestOperation
JSONRequestOperationWithRequest:request
success:^(NSURLRequest *request, NSHTTPURLResponse *response, id json) {
self.results = [json valueForKeyPath:#"data"];
[self.tableView reloadData];
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
}];
[operation start];
The second:
NSURL *url = [NSURL URLWithString:#"https://api.twitter.com/1.1/search/tweets.json"];
NSDictionary *parameters = #{#"count" : RESULTS_PERPAGE,
#"q" : encodedQuery};
SLRequest *slRequest = [SLRequest requestForServiceType:SLServiceTypeTwitter
requestMethod:SLRequestMethodGET
URL:url
parameters:parameters];
NSArray *accounts = [self.accountStore accountsWithAccountType:accountType];
slRequest.account = [accounts lastObject];
NSURLRequest *request = [slRequest preparedURLRequest];
dispatch_async(dispatch_get_main_queue(), ^{
self.connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
});

Answer 1

To combine the data from your external sources, you'll want to do the following for each response you get back.
Also, for the sake of the example, I'm assuming the objects you'll be dealing with are all dictionaries. If they aren't, you'll want to add some logic in the comparison block to get at the created_time value depending upon the type of object each one is.
NSArray *data = [json valueForKeyPath: #"data"]; // This is the data from your first example. You'll have to do the same for your second example.
NSMutableArray *allResults = [NSMutableArray arrayWithArray: self.results];
[allResults addObjectsFromArray: data];
[allResults sortUsingComparator: ^NSComparisonResult(id obj1, id obj2) {
NSDictionary *dict1 = obj1;
NSDictionary *dict2 = obj2;
return [[dict1 objectForKey: #"created_time"] compare: [dict2 objectForKey: #"created_time"]];
}];
[self setResults: allResults];
[self.tableView reloadData];