How to get the Current city in iOS - ios

Question

I want to send the city name to the server. I am getting latitude longitude using CLLocationManager. Then I use this link to do reverse geocoding.
https://maps.googleapis.com/maps/api/geocode/json?latlng=lati,longi&key=myApiKey
My problem is for different locations the number of address components are different. As an example, I am getting this array of address componeents for my current location.
"results": [
{
"address_components": [
{
"long_name": "ABC Rd",
"short_name": "ABC Rd",
"types": [
"route"
]
},
{
"long_name": "My City",
"short_name": "My City",
"types": [
"administrative_area_level_2",
"political"
]
},
{
"long_name": "My Province",
"short_name": "AB",
"types": [
"administrative_area_level_1",
"political"
]
},
{
"long_name": "My Country",
"short_name": "MC",
"types": [
"country",
"political"
]
}
],
For my client's location im getting this
results": [
{
"address_components": [
{
"long_name": "4",
"short_name": "4",
"types": [
"street_number"
]
},
{
"long_name": "some name",
"short_name": "some name",
"types": [
"route"
]
},
{
"long_name": "some name",
"short_name": "Some name",
"types": [
"political",
"sublocality",
"sublocality_level_2"
]
},
{
"long_name": "some name",
"short_name": "some name",
"types": [
"political",
"sublocality",
"sublocality_level_1"
]
},
{
"long_name": "city",
"short_name": "city",
"types": [
"locality",
"political"
]
},
{
"long_name": "some name",
"short_name": "Some name",
"types": [
"administrative_area_level_1",
"political"
]
},
{
"long_name": "Client country",
"short_name": "CC",
"types": [
"country",
"political"
]
},
{
"long_name": "12345",
"short_name": "12345",
"types": [
"postal_code"
]
}
],
How can I get the exact city name for different locations when the address components are different. First I tried to get it my component index number but since number of components are different I cant do that. Whats the correct way to do that? Please help me.
Thanks
UPDATE
[geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error) {
NSLog(#"Found placemarks: %#, error: %#", placemarks, error);
if (error == nil && [placemarks count] > 0) {
placemark = [placemarks objectAtIndex:0];
NSString *address = [NSString stringWithFormat:#"%# %#\n%# %#\n%#\n%#",
placemark.subThoroughfare, placemark.thoroughfare,
placemark.postalCode, placemark.subLocality,
placemark.subAdministrativeArea,
placemark.country];
// NSString *address=[self.placemark];
NSDictionary *dictAddress = [NSDictionary dictionaryWithDictionary:placemark.addressDictionary];
NSMutableDictionary *dictTxtData = [NSMutableDictionary dictionary];
NSLog(#"----LOCATION NAME----%#",[placemark.addressDictionary valueForKey:#"Name"]);
NSLog(#"-----STREET ADDRESS---%#",[placemark.addressDictionary valueForKey:#"Thoroughfare"]);
NSLog(#"-----CITY-----%#",[placemark.addressDictionary valueForKey:#"City"]);
strCountry=placemark.country;
NSLog(#"Address------%#",address);
} else {
NSLog(#"%#", error.debugDescription);
}
} ];
Results I get
----LOCATION NAME----My Rd
-----STREET ADDRESS---My Rd
-----CITY-----(null)
Address------(null) My Rd
(null) (null)
(null)
My Country
This is how I call to location update
-(void)GetLocationData
{
if (self.locationManager == nil)
{
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
}
else
{
nil;
}
if ([self.locationManager respondsToSelector:#selector(requestWhenInUseAuthorization)])
{
[self.locationManager requestWhenInUseAuthorization];
}
else
{
nil;
}
self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;//kCLLocationAccuracyBest;
[self.locationManager startUpdatingLocation];
}

Answer 1

The json responses from Google API can contain different place marks depending upon the location. Using index is not the correct approach. You can find the city name in json components where type is locality. Below is the code snippet
NSDictionary *locationData = [[json objectForKey:#"results"] objectAtIndex:0];
NSArray* addressComponents= [locationData objectForKey:#"address_components"];
//Iterate each result of address components - find locality and country
NSString *cityName;
for (NSDictionary* address in addressComponents)
{
NSArray* addressType = [address objectForKey:#"types"];
NSString* firstType = [addressType objectAtIndex:0];
if([firstType isEqualToString:#"locality"])
cityName = [address objectForKey:#"long_name"];
}
or you can also use CLGeocoder API in iOS.
CLGeocoder *ceo = [[CLGeocoder alloc]init];
CLLocation *loc = [[CLLocation alloc]initWithLatitude:lat longitude:long];
[ceo reverseGeocodeLocation: loc completionHandler:
^(NSArray *placemarks, NSError *error) {
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSLog(#"placemark %#",placemark.locality); // Get the city name
}];

Answer 2

call setLocation() in viewdidload method
func setLocation()
{
// self.view.backgroundColor = UIColor.whiteColor()
self.edgesForExtendedLayout = .None
// Set bounds to inner-west Sydney Australia.
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestWhenInUseAuthorization()
locationManager.startUpdatingLocation()
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
// print("dofo \(manager.location?.coordinate.latitude)")
// print(manager.location?.coordinate.longitude)
currentlat = (manager.location?.coordinate.latitude)!
cuurentlong = (manager.location?.coordinate.longitude)!
let geoCoder = CLGeocoder()
let location = CLLocation(latitude: currentlat,
longitude: cuurentlong)
geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in
// Place details
var placeMark: CLPlacemark!
placeMark = placemarks?[0]
// Address dictionary
print(placeMark.addressDictionary)
// Location name
if let locationName = placeMark.addressDictionary!["Name"] as? NSString {
print(locationName)
}
// Street address
if let street = placeMark.addressDictionary!["Thoroughfare"] as? NSString {
print(street)
}
// City
if let city = placeMark.addressDictionary!["City"] as? NSString {
print(city)
}
// Zip code
if let zip = placeMark.addressDictionary!["ZIP"] as? NSString {
print(zip)
}
// Country
if let country = placeMark.addressDictionary!["Country"] as? NSString {
print(country)
}
})
}