MapKit框架在地图中用于显示，工程实例：

 

1 #import "ViewController.h" 2  3 #import 
     
       4 #import 
      
        5 #import "myAnotation.h" 6  7 @interface ViewController ()
       
         8 ///定位管理器 9 @property (nonatomic, strong) CLLocationManager *manager;10 ///显示地图的视图11 @property (nonatomic, strong) MKMapView *mapView;12 13 @end14 15 @implementation ViewController16 17 - (void)viewDidLoad {18     [super viewDidLoad];19 20     [self createMapView];21 22 }23 24 #pragma mark - 创建地图视图25 - (void)createMapView {26    //创建地图视图，添加到当前视图27     self.mapView = [[MKMapView alloc] initWithFrame:[UIScreen mainScreen].bounds];28     [self.view addSubview:self.mapView];29     //设置代理30     self.mapView.delegate = self;31     //定位32     self.manager = [[CLLocationManager alloc] init];33     //判断隐私并授权34     if (![CLLocationManager locationServicesEnabled]) {35         NSLog(@"当前设备的定位不可用");36     }37     if ([CLLocationManager authorizationStatus] != kCLAuthorizationStatusAuthorizedWhenInUse) {38         //注意设置info.plist（参照上一篇博客CoreLocation框架）39         [self.manager requestWhenInUseAuthorization];40     }41     //设置地图的定位追踪，枚举值，根据实际需求选取枚举值42     self.mapView.userTrackingMode = MKUserTrackingModeFollow;43     //设置地图的类型44     self.mapView.mapType = MKMapTypeStandard;45     46     //添加大头针47     [self addAnotation];48     49 }50 #pragma mark - 添加大头针方法的响应51 - (void)addAnotation {52     //设置经纬度53     CLLocationCoordinate2D location = CLLocationCoordinate2DMake(40, 116);54     myAnotation *anotation = [[myAnotation alloc] init];55     anotation.coordinate = location;56     anotation.title = @"北京";57     anotation.subtitle = @"朝阳区";58     anotation.image = [UIImage imageNamed:@"11.png"];59     60     [self.mapView addAnnotation:anotation];61     62 }63 64 #pragma mark - 代理方法65 - (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation {66     NSLog(@"====%@", userLocation);67 }68 #pragma mark - 实现自定义大头针的代理方法(显示大头针的时候才会调用的方法)69 - (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id
        
         )annotation {70     //判断是否是自定义的大头针71     if ([annotation isKindOfClass:[myAnotation class]]) {72         static NSString *identifier = @"Annotation";73         MKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:identifier];74         if (!annotationView) {75             annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];76             77             //允许用户交互78             annotationView.canShowCallout = YES;79             //设置偏移量80             annotationView.calloutOffset = CGPointMake(0, 2);81             //设置左视图82             annotationView.leftCalloutAccessoryView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"11.png"]];83             84         }85         86         //修改大头针视图87         annotationView.annotation = annotation;88         annotationView.image = ((myAnotation *)annotation).image;89         90         return annotationView;91         92     }else {93         return nil;94     }95 }96 @end
        
       
      
     

大头针模型：

1 #import 
     
       2 #import 
      
        3 @interface myAnotation : NSObject
       
         4 //大头针模型；重写协议中的三个属性coordinate（标记位置）、title（标题）、subtitle（子标题）三个属性 5 ///坐标 6 @property (nonatomic) CLLocationCoordinate2D coordinate; 7 ///标题 8 @property (nonatomic, copy) NSString *title; 9 ///子标题10 @property (nonatomic, copy) NSString *subtitle;11 ///自定义大头针（换成图片）12 @property (nonatomic, strong) UIImage *image;13 14 @end