Google Geocoding API. I have a problem with parsing json response - iphone

Question

I have a problem with parsing json response. My error is: [__NSArrayI objectForKey:]: unrecognized selector sent to instance. As I see the params should be NSDictionary. Why does the params is an NSArray?
enter code hereNSDictionary *dictionary = [[CJSONDeserializer deserializer] deserializeAsDictionary:jsonData error:&error];
NSString* requestStatus = [dictionary objectForKeyNotNull:#"status"];
if ([requestStatus isEqualToString:#"OK"])
{
NSDictionary *params = [dictionary objectForKey:#"results"];
NSString *addresses = [params objectForKey:#"formatted_address"];
}`enter code here`
My json is :
{
"status": "OK",
"results": [ {
"types": [ "street_address" ],
"formatted_address": "1600 Amphitheatre Pkwy, Mountain View, CA 94043, USA",
"address_components": [ {
"long_name": "1600",
"short_name": "1600",
"types": [ "street_number" ]
}, {
"long_name": "Amphitheatre Pkwy",
"short_name": "Amphitheatre Pkwy",
"types": [ "route" ]
}, {
"long_name": "Mountain View",
"short_name": "Mountain View",
"types": [ "locality", "political" ]
}, {
"long_name": "California",
"short_name": "CA",
"types": [ "administrative_area_level_1", "political" ]
}, {
"long_name": "United States",
"short_name": "US",
"types": [ "country", "political" ]
}, {
"long_name": "94043",
"short_name": "94043",
"types": [ "postal_code" ]
} ],
"geometry": {
"location": {
"lat": 37.4219720,
"lng": -122.0841430
},
"location_type": "ROOFTOP",
"viewport": {
"southwest": {
"lat": 37.4188244,
"lng": -122.0872906
},
"northeast": {
"lat": 37.4251196,
"lng": -122.0809954
}
}
}
} ]
}

Answer 1

For #"results" key you have an array.
So you need
NSString *addresses = [[params objectAtIndex:0] objectForKey:#"formatted_address"];