Eu estou fazendo JSON parsing e quero mostrar meus dados analisados ​​em umUITableView.

Para isso, estou tentando atribuir dados analisadosNSMutableDictionary paraNSArray para mostrar na exibição de tabela, mas a matriz retornanull.

Aqui minha matriz retornanull valor;

NSMutableDictionary *tempDict1;
NSArray *arr = [[tempDict1 valueForKey:@"rates"]  componentsSeparatedByString:@";"];

código

- (void)connectionDidFinishLoading:(NSURLConnection *)connection 
{
    [connection release];

    NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    self.responseData = nil;

    //    NSArray *latestrates = [[responseString JSONValue] objectForKey:@"rates"];
    [responseString release];

    values = [responseString JSONValue];
    array = [[NSMutableArray alloc] init];
    array = [values valueForKey:@"rates"];
    NSLog(@"array values:--> %@",array);


    tempDict1 = (NSMutableDictionary *)array;  
    arr = [[tempDict1 valueForKey:@"rates"]  componentsSeparatedByString:@";"];
    NSString *subStar = @"=";
    NSMutableArray *arrTitle = [[NSMutableArray alloc] init];
    NSMutableArray *arrValues = [[NSMutableArray alloc] init];
    [arrTitle removeAllObjects];
    [arrValues removeAllObjects];
    for (int i=0; i<[arr count]-1; i++)
    {
        [arrTitle addObject:[[arr objectAtIndex:i] substringToIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])-1]];
        [arrValues addObject:[[arr objectAtIndex:i] substringFromIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])]];
        NSLog(@"arrTitle is:--> %@",arrTitle);
    }

    tempDict1 = (NSMutableDictionary*)[array objectAtIndex:0];
    array = [values valueForKey:@"rates"];
    NSLog(@"tempDict--%@",tempDict1);

    [arr retain];
    [tbl_withData reloadData];

}