iOS geocoding data from google parsing json - ios

Question

I'm pulling some data from google maps but I can't seem to do anything with it. Here's my code:
- (void)connectionDidFinishLoading:(NSURLConnection *)theConnection {
//do something with the data!
NSError *e = nil;
//parse the json data
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData: receivedData options: NSJSONReadingMutableContainers error: &e];
//get the lat and long and put it into an array
locationData = [[NSMutableArray alloc] init];
NSLog(#"%#", [jsonArray objectAtIndex:0]);
}
if I log jsonArray.count I get 2, which seems right since google will return results and status at the top level. But if I try to get object 0 it crashes. If I try to do something like this it also crashes:
- (void)connectionDidFinishLoading:(NSURLConnection *)theConnection {
//do something with the data!
NSError *e = nil;
//parse the json data
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData: receivedData options: NSJSONReadingMutableContainers error: &e];
//get the lat and long and put it into an array
locationData = [[NSMutableArray alloc] init];
for(NSDictionary* thisLocationDict in jsonArray) {
NSString* location = [thisLocationDict objectForKey:#"results"];
[locationData addObject:location];
}
}
I use this code to get data from Twitter with no problems. The error I get in the console is I am trying to get an object of a string:
-[__NSCFString objectForKey:]: unrecognized selector sent to instance 0x798a270
Here's the json google is sending me:
results = (
{
"address_components" = (
{
"long_name" = 2900;
"short_name" = 2900;
types = (
"street_number"
);
},
{
"long_name" = "Horizon Dr";
"short_name" = "Horizon Dr";
types = (
route
);
},
{
"long_name" = "King of Prussia";
"short_name" = "King of Prussia";
types = (
locality,
political
);
},
{
"long_name" = "Upper Merion";
"short_name" = "Upper Merion";
types = (
"administrative_area_level_3",
political
);
},
{
"long_name" = Montgomery;
"short_name" = Montgomery;
types = (
"administrative_area_level_2",
political
);
},
{
"long_name" = Pennsylvania;
"short_name" = PA;
types = (
"administrative_area_level_1",
political
);
},
{
"long_name" = "United States";
"short_name" = US;
types = (
country,
political
);
},
{
"long_name" = 19406;
"short_name" = 19406;
types = (
"postal_code"
);
}
);
"formatted_address" = "2900 Horizon Dr, King of Prussia, PA 19406, USA";
geometry = {
location = {
lat = "40.0896985";
lng = "-75.341717";
};
"location_type" = ROOFTOP;
viewport = {
northeast = {
lat = "40.09104748029149";
lng = "-75.34036801970849";
};
southwest = {
lat = "40.0883495197085";
lng = "-75.34306598029151";
};
};
};
types = (
"street_address"
);
}
);
status = OK;
}
and the url I am passing:
http://maps.googleapis.com/maps/api/geocode/json?address=2900+Horizon+Drive+King+of+Prussia+,+PA&sensor=false
any idea what I am doing wrong?

Answer 1

The difference from the data that you get from google is that it comes separate by keys, such as results, geometry, formatted_address...
You should do something like this:
NSError *error;
NSString *lookUpString = [NSString stringWithFormat:#"http://maps.googleapis.com/maps/api/geocode/json?address=%#&components=country:AU&sensor=false", self.searchBar.text];
lookUpString = [lookUpString stringByReplacingOccurrencesOfString:#" " withString:#"+"];
NSData *jsonResponse = [NSData dataWithContentsOfURL:[NSURL URLWithString:lookUpString]];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:jsonResponse options:kNilOptions error:&error];
self.locationArray = [[jsonDict valueForKey:#"results"] valueForKey:#"formatted_address"];
int total = self.locationArray.count;
NSLog(#"locationArray count: %d", self.locationArray.count);
for (int i = 0; i < total; i++)
{
NSString *statusString = [jsonDict valueForKey:#"status"];
NSLog(#"JSON Response Status:%#", statusString);
NSLog(#"Address: %#", [self.locationArray objectAtIndex:i]);
}