maps are always helpful for us to locate places. maps are integrated in ios using the mapkit framework.

steps involved

step 1 − create a simple view-based application.

step 2 − select your project file, then select targets and then add mapkit.framework.

step 3 − we should also add corelocation.framework.

step 4 − add a mapview to viewcontroller.xib and create an iboutlet and name it as mapview.

step 5 − create a new file by selecting file → new → file... → select objective c class and click next.

step 6 − name the class as mapannotation with "sub class of" as nsobject.

step 7 − select create.

step 8 − update mapannotation.h as follows −

#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

step 9 − update mapannotation.m as follows −

#import "mapannotation.h"

@implementation mapannotation
-(id)initwithtitle:(nsstring *)title andcoordinate:
   (cllocationcoordinate2d)coordinate2d {
  
   self.title = title;
   self.coordinate =coordinate2d;
   return self;
}
@end

step 10 − update viewcontroller.h as follows −

#import <uikit/uikit.h>
#import <mapkit/mapkit.h>
#import <corelocation/corelocation.h>

@interface viewcontroller : uiviewcontroller<mkmapviewdelegate> {
   mkmapview *mapview;
}
@end

step 11 − update viewcontroller.m as follows −

#import "viewcontroller.h"
#import "mapannotation.h"

@interface viewcontroller ()
@end

@implementation viewcontroller

- (void)viewdidload {
   [super viewdidload];
   mapview = [[mkmapview alloc]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 = [[mapannotation alloc]
   initwithtitle:@"apple head quaters" andcoordinate:location];
   [mapview addannotation:newannotation];
   cllocationcoordinate2d location2;
   location2.latitude = (double) 37.35239;
   location2.longitude = (double) -122.025919;
   mapannotation *newannotation2 = [[mapannotation alloc] 
   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 = [annotationview annotation];
   mkcoordinateregion region = mkcoordinateregionmakewithdistance
   ([mp coordinate], 1500, 1500);
   [mv setregion:region animated:yes];
   [mv selectannotation:mp animated:yes];
}

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

output

when we run the application, we'll get the output as shown below −

when we scroll the map up, we will get the output as shown below −