Question

I’m searching Twitter for tweets with this code:

- (void)fetchTweets
{

NSURL *url = [NSURL URLWithString:@"http://search.twitter.com/search.json"];
NSDictionary *params = [NSDictionary dictionaryWithObject:@"#winning" forKey:@"q"];

TWRequest *request = [[TWRequest alloc] initWithURL:url 
                                         parameters:params 
                                      requestMethod:TWRequestMethodGET];

[request performRequestWithHandler:
 ^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {

     if (responseData) {
         NSError *jsonError;
         tweets = 
         [NSJSONSerialization JSONObjectWithData:responseData 
                                         options:kNilOptions
                                           error:&jsonError];


         if (tweets) {
            // NSLog(@"%@", tweets);
         } 

         else { 
             NSLog(@"%@", jsonError);
         }

     }

     [[self delegate] receivedTweets];

 }];

[self performSelector:@selector(fetchTweets) withObject:nil afterDelay:30];

The tweets variable is a NSArray and I am trying to put it into a NSDictionary with this code:

NSDictionary *tweet = [[TwitterHandler sharedInstance].tweets objectAtIndex:indexPath.row];

I am definitely getting the JSON text for the tweets but when trying to add them to the dictionary so I can eventually put them into a table I get the “unrecognized selector sent to instance” error.

I am not sure why I am getting this and any help would be appreciated.

Answer 1

[NSJSONSerialization JSONObjectWithData:responseData 
                                options:kNilOptions
                                  error:&jsonError];

This returns an NSDictionary object of the tweets. The Twitter search results from that URL can be filtered out by looking for the content in the key results.

AKA:

NSDictionary *jsonTweet = [NSJSONSerialization JSONObjectWithData:responseData 
                                                          options:kNilOptions
                                                          error:&jsonError];

NSArray *tweet = [jsonTweet objectForKey:@"results"];

Then the tweets can be iterated through since they are in an NSArray.