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Introduction

iOS maps help us locate positions, and iOS maps use the MapKit framework.

Example Steps

1. Create a simple View-based application
2. Select the project file, then choose the target, and add MapKit.framework.
3. Add Corelocation.framework
4. Add a map view to ViewController.xib and create an ibOutlet named mapView.
5. Create a new file via "File-> New -> File... -> " select Objective C class, click Next
6. Set "sub class of" as NSObject, name the class MapAnnotation
7. Select Create
8. Update MapAnnotation.h as shown below

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface MapAnnotation : NSObject<MKAnnotation>
@property (nonatomic, strong) NSString *title;
@property (nonatomic, readwrite) CLLocationCoordinate2D coordinate;
- (id)initWithTitle:(NSString *)title andCoordinate: (CLLocationCoordinate2D)coordinate2d;
@end

9. Update MapAnnotation.m as shown below

#import "MapAnnotation.h"
@implementation MapAnnotation
-(id)initWithTitle:(NSString *)title andCoordinate: (CLLocationCoordinate2D)coordinate2d{
    self.title = title;
    self.coordinate =coordinate2d;
    return self;
}
@end

10. Update ViewController.h as shown below

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
@interface ViewController : UIViewController<MKMapViewDelegate>
{
    MKMapView *mapView;
}
@end

11. Update ViewController.m as shown below

#import "ViewController.h"
#import "MapAnnotation.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
    ;
    mapView = [initWithFrame: CGRectMake(10, 100, 300, 300)];
    mapView.delegate = self;
    mapView.centerCoordinate = CLLocationCoordinate2DMake(37.32, -122.03);
    mapView.mapType = MKMapTypeHybrid;
    CLLocationCoordinate2D location;
    location.latitude = (double) 37.332768;
    location.longitude = (double) -122.030039;
    // Add the annotation to our map view
    MapAnnotation *newAnnotation = [ initWithTitle:@"Apple Head quaters" andCoordinate:location];
    [mapView addAnnotation:newAnnotation];
    CLLocationCoordinate2D location2;
    location2.latitude = (double) 37.35239;
    location2.longitude = (double) -122.025919;
    MapAnnotation *newAnnotation2 = [ initWithTitle:@"Test annotation" andCoordinate:location2];
    [mapView addAnnotation:newAnnotation2];
    [self.view addSubview:mapView];
}
// When a map annotation point is added, zoom to it (1500 range)
- (void)mapView:(MKMapView *)mv didAddAnnotationViews:(NSArray *)views {
    MKAnnotationView *annotationView = [views objectAtIndex:0];
    id <MKAnnotation> mp = ;
    MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance (, 1500, 1500);
    [mv setRegion:region animated:YES];
    [mv selectAnnotation:mp animated:YES];
}
- (void)didReceiveMemoryWarning {
    ;
    // Dispose of any resources that can be recreated.
}
@end

Output

When running the application, the output is as follows

When we scroll up the map, the output is as follows