we can easily locate the user's current location in ios, provided the user allows the application to access the information with the help of the core location framework.

location handling – steps involved

step 1 − create a simple view based application.

step 2 − select your project file, then select targets and then add corelocation.framework as shown below −

step 3 − add two labels in viewcontroller.xib and create iboutlets naming the labels as latitudelabel and longitudelabel respectively.

step 4 − create a new file by selecting file → new → file... → select objective c class and click next.

step 5 − name the class as locationhandler with "sub class of" as nsobject.

step 6 − select create.

step 7 − update locationhandler.h as follows −

#import <foundation/foundation.h>
#import <corelocation/corelocation.h>

@protocol locationhandlerdelegate <nsobject>

@required
-(void) didupdatetolocation:(cllocation*)newlocation 
   fromlocation:(cllocation*)oldlocation;
@end

@interface locationhandler : nsobject<cllocationmanagerdelegate> {
   cllocationmanager *locationmanager;
}
@property(nonatomic,strong) id<locationhandlerdelegate> delegate;

+(id)getsharedinstance;
-(void)startupdating;
-(void) stopupdating;

@end

step 8 − update locationhandler.m as follows −

#import "locationhandler.h"
static locationhandler *defaultmanager = nil;

@interface locationhandler()

-(void)initiate;

@end

@implementation locationhandler

+(id)getsharedinstance{
   if (!defaultmanager) {
      defaultmanager = [[self allocwithzone:null]init];
      [defaultmanager initiate];
   }
   return defaultmanager;
}

-(void)initiate {
   locationmanager = [[cllocationmanager alloc]init];
   locationmanager.delegate = self;
}

-(void)startupdating{
   [locationmanager startupdatinglocation];
}

-(void) stopupdating {
   [locationmanager stopupdatinglocation];
}

-(void)locationmanager:(cllocationmanager *)manager didupdatetolocation:
   (cllocation *)newlocation fromlocation:(cllocation *)oldlocation {
   if ([self.delegate respondstoselector:@selector
   (didupdatetolocation:fromlocation:)]) {
      [self.delegate didupdatetolocation:oldlocation 
      fromlocation:newlocation];
   }
}
@end

step 9 − update viewcontroller.h as follows where we have implemented the locationhandler delegate and create two iboutlets −

#import <uikit/uikit.h>
#import "locationhandler.h"

@interface viewcontroller : uiviewcontroller<locationhandlerdelegate> {
   iboutlet uilabel *latitudelabel;
   iboutlet uilabel *longitudelabel;
}
@end

step 10 − update viewcontroller.m as follows −

#import "viewcontroller.h"

@interface viewcontroller ()
@end

@implementation viewcontroller

- (void)viewdidload {
   [super viewdidload];
   [[locationhandler getsharedinstance]setdelegate:self];
   [[locationhandler getsharedinstance]startupdating];
}

- (void)didreceivememorywarning {
   [super didreceivememorywarning];
   // dispose of any resources that can be recreated.
}

-(void)didupdatetolocation:(cllocation *)newlocation 
 fromlocation:(cllocation *)oldlocation {
   [latitudelabel settext:[nsstring stringwithformat:
   @"latitude: %f",newlocation.coordinate.latitude]];
   [longitudelabel settext:[nsstring stringwithformat:
   @"longitude: %f",newlocation.coordinate.longitude]];
}
@end

output

when we run the application, we'll get the following output −