- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{}- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{NSString * errorMessage;if ([error code] == kCLErrorDenied) {errorMessage = @"访问被拒绝！";}if ([error code] == kCLErrorLocationUnknown) {errorMessage = @"无法定位到你的位置!";}
}

1 #import <UIKit/UIKit.h>
2
3 @interface ViewController : UIViewController
4
5
6 @end

 1 #import "ViewController.h"
 2 #import <CoreLocation/CoreLocation.h>
 3 #import <MapKit/MapKit.h>
 4
 5 #import <MapKit/MKAnnotation.h>
 6 #import "MapAnnotations.h"
 7
 8 @interface ViewController ()<CLLocationManagerDelegate, MKMapViewDelegate>
 9 {
10     CLLocationManager * locManager;
11     CLLocationCoordinate2D loc;
12     UITextView * textView;
13
14     MKMapView * map;
15
16     MapAnnotations * mapAnnotations;
17 }
18 @end
19
20 @implementation ViewController
21
22 - (void)viewDidLoad {
23     [super viewDidLoad];
24     // Do any additional setup after loading the view, typically from a nib.
25     //创建位置管理器
26     locManager = [[CLLocationManager alloc] init];
27     locManager.delegate = self;
28     if ([CLLocationManager locationServicesEnabled]) {
29         locManager.desiredAccuracy = kCLLocationAccuracyBest;  //精确度最好
30         locManager.distanceFilter = 300;  //距离筛选器 300米
31         [locManager startUpdatingLocation];  //启动位置管理器进行定位
32         [locManager requestAlwaysAuthorization];
33     }
34
35     map = [[MKMapView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
36     map.showsUserLocation = YES;
37     [self.view addSubview:map];
38
39     UIButton * addPanBtn = [UIButton buttonWithType:UIButtonTypeContactAdd];
40     addPanBtn.center = CGPointMake(40, 40);
41     [addPanBtn addTarget:self action:@selector(addPin:) forControlEvents:UIControlEventTouchUpInside];
42     [self.view addSubview:addPanBtn];
43 }
44
45 #pragma mark - 代理方法
46 //这是位置更新方法，当我们的移动范围大于距离筛选器的值时，位置管理器会调用此方法进行重新定位
47 - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{
48     CLLocation * location = [locations firstObject];
49
50     NSLog(@"latitude:%f, longitude:%f",location.coordinate.latitude, location.coordinate.longitude);
51
52     MKCoordinateRegion region;
53     MKCoordinateSpan span;
54     span.latitudeDelta = 1;
55     span.longitudeDelta = 1;
56     region.span = span;
57     region.center = location.coordinate;
58     [map setRegion:region animated:YES];
59     [map regionThatFits:region];
60
61     mapAnnotations = [[MapAnnotations alloc] initWithCoordinate:location.coordinate];
62     mapAnnotations.title = @"TEST";
63     mapAnnotations.subtitle = @"Just For Test";
64     [map addAnnotation:mapAnnotations];
65 }
66
67 - (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
68     NSString * errorMessage;
69     if ([error code] == kCLErrorDenied) {
70         errorMessage = @"访问被拒绝！";
71     }
72     if ([error code] == kCLErrorLocationUnknown) {
73         errorMessage = @"无法定位到你的位置!";
74     }
75 }
76
77 - (void)dealloc{
78     //停止检测位置更新
79     [locManager stopUpdatingLocation];
80 }
81
82 - (void)addPin:(id)sender{
83     mapAnnotations = [[MapAnnotations alloc] initWithCoordinate:map.region.center];
84     mapAnnotations.title = [NSString stringWithFormat:@"%f",map.region.center.latitude];
85     mapAnnotations.subtitle = [NSString stringWithFormat:@"%f",map.region.center.longitude];
86     [map addAnnotation:mapAnnotations];
87 }
88
89 - (void)didReceiveMemoryWarning {
90     [super didReceiveMemoryWarning];
91     // Dispose of any resources that can be recreated.
92 }
93
94 @end

 1 #import <Foundation/Foundation.h>
 2 #import <CoreLocation/CoreLocation.h>
 3 #import <MapKit/MapKit.h>
 4
 5 @interface MapAnnotations : NSObject<MKAnnotation>
 6
 7 @property (nonatomic, copy) NSString * title;
 8 @property (nonatomic, copy) NSString * subtitle;
 9 @property (nonatomic, assign) CLLocationCoordinate2D coordinate;
10
11 - (instancetype)initWithCoordinate:(CLLocationCoordinate2D)c;
12
13 @end

 1 #import "MapAnnotations.h"
 2
 3 @implementation MapAnnotations
 4
 5 - (instancetype)initWithCoordinate:(CLLocationCoordinate2D)c{
 6     _coordinate = c;
 7     return self;
 8 }
 9
10 @end