BM

stocks.m

NSString *textString = @"APPL";
    NSString *query = [NSString stringWithFormat:@"select * from yahoo.finance.quotes where symbol in (\"%@\")", textString];
    NSString *escapedStoreUrl = [@"store://datatables.org/alltableswithkeys" stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]];
    NSString *escapedQuery = [query stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]];
    NSString *urlString = [NSString stringWithFormat:@"http://query.yahooapis.com/v1/public/yql?q=%@&env=%@&format=json", escapedQuery, escapedStoreUrl];
    
    NSMutableURLRequest *mutableRequestGET = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:urlString]];
    [mutableRequestGET setHTTPMethod:@"GET"];
    NSData *dataResponse = [NSURLConnection sendSynchronousRequest:mutableRequestGET returningResponse:nil error:nil];
    
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        NSError *error;
        NSDictionary *json = [NSJSONSerialization JSONObjectWithData:dataResponse options:kNilOptions error:&error];
        // Enumerate through JSON
        NSDictionary *productSets = [[[json objectForKey:@"query"] objectForKey:@"results"] objectForKey:@"quote"];
        
        /* If you want to get one key independently, replace the id
         * of objectForKey with "symbol", "AverageDailyVolume", etc.
         * (and uncomment the line below.!)
         */
        //NSString *lastTradeDate = [productSets objectForKey:@"LastTradeDate"];
        
        for (NSString *sub in productSets) {
            NSLog(@"%@: %@",sub,[productSets objectForKey:sub]);
        }
        
            dispatch_async(dispatch_get_main_queue(), ^{
                // Update UI accordingly with data from above.
            });
    });