How to get current location using CLLocationManager in iOS - ios

Question

I can already find the current location using latitude and longitude, but I would also like to be able to find the current location given a zip code.
Here is what I have so far:
.h
#import <MapKit/MapKit.h>
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#interface ViewController : UIViewController<CLLocationManagerDelegate>
{
CLLocationManager *locationManager;
CLLocation *currentLocation;
IBOutlet UILabel *label1;
IBOutlet UILabel *lable2;
}
#property (weak, nonatomic) IBOutlet MKMapView *myMapview;
#property (weak, nonatomic) IBOutlet UILabel *label2;
#property (weak, nonatomic) IBOutlet UILabel *lable1;
#end
.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
locationManager = [[CLLocationManager alloc]init];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
_myMapview.showsUserLocation = YES;
[self->locationManager startUpdatingLocation];
CLLocation *location = [locationManager location];
CLLocationCoordinate2D coordinate = [location coordinate];
NSString *latitude = [NSString stringWithFormat:#"%f", coordinate.latitude];
NSString *longitude = [NSString stringWithFormat:#"%f", coordinate.longitude];
//NSLog(#”dLatitude : %#”, latitude);
//NSLog(#”dLongitude : %#”,longitude);
NSLog(#"MY HOME :%#", latitude);
NSLog(#"MY HOME: %# ", longitude);
}
#pragma mark CLLocationManager Delegate
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
currentLocation = [locations objectAtIndex:0];
[locationManager stopUpdatingLocation];
[self->locationManager stopUpdatingLocation];
NSLog(#"my latitude :%f",currentLocation.coordinate.latitude);
NSLog(#"my longitude :%f",currentLocation.coordinate.longitude);
label1.text = [NSString stringWithFormat:#"%.8f", currentLocation.coordinate.longitude];
lable2.text = [NSString stringWithFormat:#"%.8f", currentLocation.coordinate.latitude];
NSLog(#"Detected Location : %f, %f", currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
CLGeocoder *geocoder = [[CLGeocoder alloc] init] ;
[geocoder reverseGeocodeLocation:currentLocation
completionHandler:^(NSArray *placemarks, NSError *error)
{
if (error)
{
NSLog(#"Geocode failed with error: %#", error);
return;
}
NSLog(#"Monday");
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSLog(#"placemark.ISOcountryCode %#",placemark.ISOcountryCode);
}];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
NSLog(#"didUpdateToLocation: %#", newLocation);
CLLocation *currentLocation = newLocation;
if (currentLocation != nil)
{
label1.text = [NSString stringWithFormat:#"%.8f", currentLocation.coordinate.longitude];
lable2.text = [NSString stringWithFormat:#"%.8f", currentLocation.coordinate.latitude];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end

Answer 1

Step 1: Import MobileCoreServices framework in .h File
#import <MobileCoreServices/MobileCoreServices.h>
Step 2: Add delegate CLLocationManagerDelegate
#interface yourViewController : UIViewController<CLLocationManagerDelegate>
{
CLLocationManager *locationManager;
CLLocation *currentLocation;
}
Step 3: Add this code in class file
- (void)viewDidLoad
{
[super viewDidLoad];
[self CurrentLocationIdentifier]; // call this method
}
Step 4: Method to get location
//------------ Current Location Address-----
-(void)CurrentLocationIdentifier
{
//---- For getting current gps location
locationManager = [CLLocationManager new];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
//------
}
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
currentLocation = [locations objectAtIndex:0];
[locationManager stopUpdatingLocation];
CLGeocoder *geocoder = [[CLGeocoder alloc] init] ;
[geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error)
{
if (!(error))
{
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSLog(#"\nCurrent Location Detected\n");
NSLog(#"placemark %#",placemark);
NSString *locatedAt = [[placemark.addressDictionary valueForKey:#"FormattedAddressLines"] componentsJoinedByString:#", "];
NSString *Address = [[NSString alloc]initWithString:locatedAt];
NSString *Area = [[NSString alloc]initWithString:placemark.locality];
NSString *Country = [[NSString alloc]initWithString:placemark.country];
NSString *CountryArea = [NSString stringWithFormat:#"%#, %#", Area,Country];
NSLog(#"%#",CountryArea);
}
else
{
NSLog(#"Geocode failed with error %#", error);
NSLog(#"\nCurrent Location Not Detected\n");
//return;
CountryArea = NULL;
}
/*---- For more results
placemark.region);
placemark.country);
placemark.locality);
placemark.name);
placemark.ocean);
placemark.postalCode);
placemark.subLocality);
placemark.location);
------*/
}];
}

Answer 2

Here is a code to get user current location using block
1) #import <CoreLocation/CoreLocation.h>
2) <CLLocationManagerDelegate>
3) in .h file
//Location
typedef void(^locationBlock)();
//Location
-(void)GetCurrentLocation_WithBlock:(void(^)())block;
#property (nonatomic, strong) locationBlock _locationBlock;
#property (nonatomic,copy)CLLocationManager *locationManager;
#property (nonatomic)CLLocationCoordinate2D coordinate;
#property (nonatomic,strong) NSString *current_Lat;
#property (nonatomic,strong) NSString *current_Long;
4) in .m file
#pragma mark - CLLocationManager
-(void)GetCurrentLocation_WithBlock:(void(^)())block {
self._locationBlock = block;
_locationManager = [[CLLocationManager alloc] init];
[_locationManager setDelegate:self];
[_locationManager setDistanceFilter:kCLDistanceFilterNone];
[_locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
if (IS_OS_8_OR_LATER) {
if ([_locationManager respondsToSelector:#selector(requestWhenInUseAuthorization)]) {
[_locationManager requestWhenInUseAuthorization];
[_locationManager requestAlwaysAuthorization];
}
}
[_locationManager startUpdatingLocation];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
CLLocation *currentLoc=[locations objectAtIndex:0];
_coordinate=currentLoc.coordinate;
_current_Lat = [NSString stringWithFormat:#"%f",currentLoc.coordinate.latitude];
_current_Long = [NSString stringWithFormat:#"%f",currentLoc.coordinate.longitude];
NSLog(#"here lat %# and here long %#",_current_Lat,_current_Long);
self._locationBlock();
[_locationManager stopUpdatingLocation];
_locationManager = nil;
}
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error {
}
5) Call function
- (void)viewDidLoad {
[super viewDidLoad];
[self GetCurrentLocation_WithBlock:^{
NSLog(#"Lat ::%f,Long ::%f",[self.current_Lat floatValue],[self.current_Long floatValue]);
}];
}
6) And add below line to .plist
Any one or both of below keys needs to be added in Info.plist file.
NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription

Answer 3

if location permissions not asking when you first launch then you cant get your current location .
iOS8 has got us major API changes with the LocationsServices
Assuming [CLLocationManager locationServicesEnabled] return YES,
With the First Launch of the iOS App [both iOS7 and iOS8] - locationMangers(CLLocationManager)

Answer 4

You can call Google APIs Maps service to get the location using zipcode:
Just enter your zipcode in address={your zipcode}.