1、导入库

CoreLocation、 MapKit

2、在AppDelegate开启定位功能

- (void)startLocation
{
    //1.定位管理器
    _locationManager = [[CLLocationManager alloc] init];
    if (![CLLocationManager locationServicesEnabled]) {
        MyLog(@"定位服务当前可能尚未打开,请设置打开!");
        return;
    }
    //2.如果没有授权则请求用户授权
    if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
        [_locationManager requestWhenInUseAuthorization];
    } else if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorizedWhenInUse) {
        //2.1设置代理
        _locationManager.delegate = self;
        //2.2设置定位精度
        _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        //2.3设置定位频率
        _locationManager.distanceFilter = 100.0;
        //2.4开启定位功能
        [_locationManager startUpdatingLocation];
    }
}

#pragma mark CoreLocation代理
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    CLLocation *location = [locations firstObject];
    CLLocationCoordinate2D coordinate = location.coordinate;

    MyLog(@"经度：%f,纬度：%f,海拔：%f,航向：%f,行走速度：%f",coordinate.longitude,coordinate.latitude,location.altitude,location.course,location.speed);

}

3、坐标转地址

- (void)getAddressByLatitude:(CLLocationDegrees)latitude longitude:(CLLocationDegrees)longitude
{
    //反地理编码
    CLLocation *location = [[CLLocation alloc] initWithLatitude:latitude longitude:longitude];
    CLGeocoder *geoCode = [[CLGeocoder alloc] init];
    [geoCode reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        CLPlacemark *placeMark = [placemarks firstObject];
        NSDictionary *addressDict = placeMark.addressDictionary;
        NSString *name = [addressDict objectForKey:@"Name"];
        MyLog(@"详细信息:%@",name);
        _addressTextField.text = name;
    }];

}

4、调用地图功能

#pragma mark 添加地图控件
- (void)addMapKit
{
    //1.初始化及设置代理
    _mapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
    _mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    _mapView.showsUserLocation = YES;
    _mapView.delegate = self;
    [self.view addSubview:_mapView];
   
    //2.请求定位服务
    _locationManager = [[CLLocationManager alloc] init];
    if(![CLLocationManager locationServicesEnabled]||[CLLocationManager authorizationStatus]!=kCLAuthorizationStatusAuthorizedWhenInUse){
        [_locationManager requestWhenInUseAuthorization];
    }
   
    //3.用户位置跟踪
    _mapView.userTrackingMode = MKUserTrackingModeFollow;
   
    //4.设置地图类型
    _mapView.mapType = MKMapTypeStandard;
   
    //5.添加大头针

    [self addAnnotation];

}

#pragma mark 添加大头针
- (void)addAnnotation
{
    CLLocationCoordinate2D shopCoordinate = CLLocationCoordinate2DMake(_latitude, _longitude);
    MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
    annotation.coordinate = shopCoordinate;
    annotation.title = _name;
    [_mapView addAnnotation:annotation];
}

#pragma mark - MapView代理
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
    if (_mapView) return;
   
    //1.位置
    CLLocationCoordinate2D center = userLocation.location.coordinate;
   
    //2.跨度
    MKCoordinateRegion region = MKCoordinateRegionMake(center, kSpan);
   
    //3.区域
    [mapView setRegion:region animated:YES];
   
    _mapView = mapView;
}

#pragma mark 自定义大头针图片
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
    if ([annotation isKindOfClass:[MKPointAnnotation class]]){
        MKPinAnnotationView *newAnnotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"myAnnotation"];
        newAnnotationView.pinColor = MKPinAnnotationColorPurple;
        // 设置该标注点动画显示
        newAnnotationView.animatesDrop = YES;
        newAnnotationView.annotation = annotation;
        //把大头针换成别的图片
        newAnnotationView.image = [UIImage imageNamed:@"my_mapLocate_annotation.png"];
        return newAnnotationView;
    }
    return nil;

}