IOS comes with the targeting feature

First step: Import header File

#import <CoreLocation/CoreLocation.h> #import <CoreLocation/CLLocationManagerDelegate.h>

Step two: Set up the agent

Cllocationmanagerdelegate

Step Three: Create a property

@property (nonatomic, strong) Cllocationmanager *locationmanager;

Fourth Step: Initialize

Location Services Management Object Initialization _locationmanager = [[Cllocationmanager alloc] init];    _locationmanager.delegate = self;    _locationmanager.desiredaccuracy = Kcllocationaccuracybest; _locationmanager.distancefilter = 100.F; Set the minimum move of 1000 meters to refresh

Fifth step: Implement the Proxy method

#pragma mark-Implement location Refresh-(void) Locationmanager: (Cllocationmanager *) Manager didupdatelocations: (Nsarray *) locations{CLL    Ocation *currlocation = [locations Lastobject]; NSLog (@ "longitude =%f latitude =%f height =%f", CurrLocation.coordinate.latitude, CurrLocation.coordinate.longitude, Currlocation.altitude);}

Sixth step: Start positioning

-(void) Viewwillappear: (BOOL) animated{[Super viewwillappear:animated]; [_locationmanager startupdatinglocation]; Start positioning}

Seventh Step: End positioning

-(void) Viewwilldisappear: (BOOL) animated{[Super viewwilldisappear:animated]; [_locationmanager stopupdatinglocation]; Stop positioning}