地图 + 定位

需要子类化协议 :

1 #import <Foundation/Foundation.h>
2 #import <MapKit/MapKit.h>
3 @interface WeiboAnnotation : NSObject<MKAnnotation>
4 
5 @property (nonatomic,assign) CLLocationCoordinate2D coordinate;
6 @property (nonatomic, copy) NSString *title;
7 
8 @end

  1 #import "NearbyWeiboViewController.h"
  2 #import <MapKit/MapKit.h>
  3 #import "WeiboAnnotation.h"
  4 
  5 @interface NearbyWeiboViewController ()<CLLocationManagerDelegate,MKMapViewDelegate>
  6 
  7 @property (nonatomic,strong)CLLocationManager *locationManger;
  8 
  9 @property (nonatomic,strong)MKMapView *mapView;
 10 
 11 @end
 12 
 13 /**
 14  *在地图上显示标注视图MKAnnotationView
 15  
 16     1.创建MKAnnotation协议(model,用来记录标注视图的位置)
 17     2.将MKAnnotation类创建的对象加到地图上
 18     3.实现协议方法,自己创建标注视图
 19  */
 20 
 21 @implementation NearbyWeiboViewController
 22 
 23 - (void)viewDidLoad {
 24     [super viewDidLoad];
 25     
 26     //创建地图
 27     _mapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
 28     //地图的类型  MKMapTypeSatellite卫星地图
 29     _mapView.mapType = MKMapTypeStandard;
 30     
 31     //显示用户的位置(触发协议方法,显示标注视图)
 32     _mapView.showsUserLocation = YES;
 33     
 34     _mapView.delegate = self;
 35     
 36     [self.view addSubview:_mapView];
 37     
 38     //定位
 39     _locationManger = [[CLLocationManager alloc] init];
 40     
 41     //设置精确度
 42     _locationManger.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
 43     _locationManger.delegate = self;
 44     [_locationManger startUpdatingLocation];
 45     
 46     
 47     //创建MKAnnotation用来在地图上显示标注
 48     WeiboAnnotation *annotatino = [[WeiboAnnotation alloc] init];
 49     annotatino.coordinate = CLLocationCoordinate2DMake(39.925398, 116.152992);
 50     
 51     //设置标题
 52     annotatino.title = @"无线互联";
 53     //将annotatino添加到地图,会触发mapView的协议方法,创建标注视图
 54     [_mapView addAnnotation:annotatino];
 55     
 56 }
 57 
 58 #pragma mark -CLLocationManagerDelegate
 59 - (void)locationManager:(CLLocationManager *)manager
 60      didUpdateLocations:(NSArray *)locations{
 61     //停止定位
 62     [manager stopUpdatingLocation];
 63     
 64     //取得用户所在的位置
 65     CLLocation *location = [locations lastObject];
 66     //取得经纬度
 67     CLLocationCoordinate2D coordinate = location.coordinate;
 68     
 69     /**
 70      *      MKCoordinateRegion{
 71             CLLocationCoordinate2D center;经纬度
 72             MKCoordinateSpan span; 区域的详细程度
 73             }
 74      *
 75      *
 76      */
 77     
 78     //span控制区域的详细程度,值越小,地图越详细
 79     MKCoordinateSpan span = MKCoordinateSpanMake(.1, .1);
 80     
 81     MKCoordinateRegion region = MKCoordinateRegionMake(coordinate, span);
 82     //设置地图的显示区域
 83     [_mapView setRegion:region animated:YES];
 84 
 85 }
 86 
 87 - (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation{
 88     
 89     //如果是用户自己的位置,不需要显示大头针
 90     if ([annotation isKindOfClass:[MKUserLocation class]]) {
 91         
 92         return nil;
 93     }
 94     
 95     static NSString *identy = @"map";
 96     
 97     //创建标注视图MKAnnotationView ->子类:MKPinAnnotationView(大头针)
 98     /**
 99      *MKAnnotationView:指定显示的图片
100      *MKPinAnnotationView:会默认显示大头针
101      *
102      */
103     MKPinAnnotationView *view = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:identy];
104     if (view == nil) {
105         
106         view = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identy];
107         
108         //显示图片
109 //        view.image = [UIImage imageNamed:@"001.png"];
110         
111         //显示标题
112         view.canShowCallout = YES;
113         
114         //设置大头针的颜色
115         view.pinColor = MKPinAnnotationColorGreen;
116         
117         //设置辅助视图
118         view.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeInfoDark];
119         
120         //从天而降
121         view.animatesDrop = YES;
122     }
123     
124     return view;
125 }
126 
127 @end