定位

建一个NSObject类

在LocationManager.h中
#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>

@interface LocationManager : NSObject<CLLocationManagerDelegate>

@property (strong, nonatomic) CLLocationManager * locationManager; //申明一个管理器
@property (strong, nonatomic) NSString * city;
@property (strong, nonatomic) void(^locationCityBlock)(NSString *); //定位的城市
@property (strong, nonatomic) void(^locationStreetBlock)(NSString *); //定位的街道
@property (nonatomic,strong) void(^location)(CLLocation *);
+(LocationManager *)sharedManager;
-(void)startLocation;

@end

在LocationManager.m中
#import "LocationManager.h"

@interface LocationManager()<CLLocationManagerDelegate>

@end

@implementation LocationManager

//单利，初始化管理器
+(LocationManager *)sharedManager{
    static LocationManager *manager = nil;
    static dispatch_once_t token;
    dispatch_once(&token,^{
        if(manager == nil){
            manager = [[LocationManager alloc]init];
            manager.locationManager.delegate = manager;
            [manager locationSetLayout];
        }
    } );
    return manager;
}

-(void)locationSetLayout{
    _locationManager = [[CLLocationManager alloc]init];
    _locationManager.delegate=self;

    //开始定位

    [_locationManager startUpdatingLocation];

    _locationManager.desiredAccuracy=kCLLocationAccuracyBest;

    CLAuthorizationStatus status =[CLLocationManager authorizationStatus];

    //如果未授权则请求

    if(status==kCLAuthorizationStatusNotDetermined) {

        [_locationManager requestAlwaysAuthorization];

    }
}

//开始定位
-(void)startLocation{

    [_locationManager startUpdatingLocation];
}

//代理设置
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{

    CLLocation *location=[locations firstObject];//取出第一个位置
    if (self.location) {
        self.location(location);
    }
    CLLocationCoordinate2D coordinate=location.coordinate;//位置坐标
    NSLog(@"经度：%f", coordinate.longitude);
    NSLog(@"纬度：%f", coordinate.latitude);
    NSLog(@"速度：%f 米/秒", location.speed);

    //如果不需要实时定位，使用完即使关闭定位服务
    [_locationManager stopUpdatingLocation];

    //逆地理编码
    CLGeocoder *revGeo = [[CLGeocoder alloc] init];
    [revGeo reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        if (!error && [placemarks count] > 0)
        {
            NSDictionary *dict =
            [[placemarks objectAtIndex:0] addressDictionary];
            NSString * cityString = dict[@"City"];
            _city = [cityString substringWithRange:NSMakeRange(0, cityString.length -1)];
            if (self.locationCityBlock) {
                self.locationCityBlock(_city);
            }
            if (self.locationStreetBlock) {
                self.locationStreetBlock(dict[@"Street"]);
            }
            NSLog(@"dict:%@",dict);
        }
        else
        {
            NSLog(@"ERROR: %@", error);
        }
    }];
}


@end

在ViewControll.m中
#import "ViewController.h"
#import "LocationManager.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    LocationManager * mangaer = [LocationManager sharedManager];
    [mangaer setLocation:^(CLLocation * location){
        NSLog(@"location:%@",location);
    }];
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end

还要设置，点击xcode->Debug->Location，点第二个