Question

I am having issues getting the json format by a specific “”. I can see that it is a dictionary so am I turning the dictionary into an array wrong? I am trying to pull the records that “isReserevble=true” and then display the “begin” with just the time in the table view cells based on the user selection from a UIDatepicker.
The json is coming through with NSlog but I am not able to figure this out. Thanks

It looks like I hae an array of dictionaries. Would I still use the same methods?

here is my code.

- (void)viewDidLoad
{
    [super viewDidLoad];
    dispatch_async(kBgQueue, ^{
        NSData* data = [NSData dataWithContentsOfURL: 
                        kLatestKivaLoansURL];
        [self performSelectorOnMainThread:@selector(fetchedData:) 
                               withObject:data waitUntilDone:YES];

    });

}
- (void)fetchedData:(NSData *)responseData {
//parse out the json data

NSError* error;

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

NSArray* myslots =[json objectForKey:@"slots"];
NSLog(@"allslots: %@", myslots);


  NSMutableArray *datesArray = [[NSMutableArray alloc] init];
for (NSDictionary *slots in json){
    NSLog(@"isReservable = %@",[myslots objectForKey:@"isReservable"]);
    if ([[myslots objectForKey:@"isReservable"]isEqualToString:@"1"]) 
    {
        NSLog(@"begin = %@",[myslots objectForKey:@"begin"]);
        [datesArray addObject:[myslots objectForKey:@"begin"]];
        NSLog(@"slots array count = %d",[datesArray count]);
    }

}
NSLog(@"This is the begin: %@", datesArray);

}

Here is my result of NSLog all slots:

2012-08-29 11:54:26.531 GBSB[1137:15b03] allslots: {
    "2012-08-29 00:00:00 America/Los_Angeles" =     (
                {
            begin = "2012-08-29 00:00:00 America/Los_Angeles";
            end = "2012-08-29 08:00:00 America/Los_Angeles";
            isPending = 0;
            isReservable = 0;
            isReserved = 0;
            label = " ";
            span = 1;
        },
                {
            begin = "2012-08-29 08:00:00 America/Los_Angeles";
            end = "2012-08-29 08:15:00 America/Los_Angeles";
            isPending = 0;
            isReservable = 1;
            isReserved = 0;
            label = " ";
            span = 1;
        }
    );
}

Ok: Here is now what I am getting

2012-08-30 09:28:30.812 GBSB[835:15b03] its a dictionary
2012-08-30 09:28:30.812 GBSB[835:15b03] isReservable = (null)
2012-08-30 09:28:30.812 GBSB[835:15b03] isReservable = (null)
2012-08-30 09:28:30.812 GBSB[835:15b03] isReservable = (null)
2012-08-30 09:28:30.813 GBSB[835:15b03] This is the begin: (
)

Answer 1

The error message is – again – helpful. Try to interpret it:

-[__NSCFString objectForKey:]: unrecognized selector sent to instance 0x81e1c80

That means, you sent the objectForKey: message to the JSON string object instead of the parsed NSDictionary object, that’s what’s wrong.