I am trying to parse a json which looks like this:
[{"category": "anti-social-behaviour", "persistent_id": "", "location_subtype": "", "id": 23193805, "location": {"latitude": "52.6387452", "street": {"id": 883166, "name": "On or near Charnwood Street"}, "longitude": "-1.1136914"}, "context": "", "month": "2013-04", "location_type": "Force", "outcome_status": null},
{"category": "anti-social-behaviour", "persistent_id": "", "location_subtype": "", "id": 23195135, "location": {"latitude": "52.6288245", "street": {"id": 883098, "name": "On or near Roslyn Street"}, "longitude": "-1.1106710"}, "context": "", "month": "2013-04", "location_type": "Force", "outcome_status": null},'
I am trying to parse it with that way:
NSString *url = @"http://data.police.uk/api/crimes-at-location?date=2012-02&location_id=12345";
NSData *jsonDataString = [[NSString stringWithContentsOfURL:[NSURL URLWithString:url] encoding:NSUTF8StringEncoding error: nil] dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
NSDictionary *results = [NSJSONSerialization JSONObjectWithData:jsonDataString options:NSJSONReadingMutableContainers | NSJSONReadingMutableLeaves error:&error];
NSArray *myResults = [results valueForKeyPath:@""];
NSDictionary *bug = (NSDictionary *)[myResults objectAtIndex:0];
// And get its name
NSString *bugName = [bug objectForKey:@"category"];
NSLog(@"%@",bugName);
I get error: __NSArrayI objectAtIndex:]: index 0 beyond bounds for empty array'
So what I should put in valueForKeyPath?
Thanks in advance
Sigh...
NSData *jsonDataString = [[NSString stringWithContentsOfURL:[NSURL URLWithString:url] encoding:NSUTF8StringEncoding error: nil] dataUsingEncoding:NSUTF8StringEncoding];
NSError *error = nil;
NSArray* myResults = [NSJSONSerialization JSONObjectWithData:jsonDataString options:NSJSONReadingMutableContainers | NSJSONReadingMutableLeaves error:&error];
if (error != nil) {
NSLog(@"%@", error);
}
NSDictionary *bug = (NSDictionary *)[myResults objectAtIndex:0];
// And get its name
NSString *bugName = [bug objectForKey:@"category"];
NSLog(@"%@",bugName);