在info.plist中加入：

//允許在前臺使用時獲取GPS的描述

定位許可權：Privacy - Location When In Use Usage Description 

//允許永久使用GPS描述

定位許可權: Privacy - Location Always Usage Description

如下圖：

然後再新增framework包，如下圖：

程式碼如下：

1，匯入系統檔案，代理：

#import <CoreLocation/CoreLocation.h>
@interface MainViewController ()<CLLocationManagerDelegate

2，宣告全域性變數

@interface MainViewController ()<CLLocationManagerDelegate>
{
    CLLocationManager *locationmanager;//定位服務
    NSString *currentCity;//當前城市
    NSString *strlatitude;//經度
    NSString *strlongitude;//緯度
}

3，宣告方法：

//獲取經緯度
    [self getLocation];

4，

-(void)getLocation
{
    //判斷定位功能是否開啟
 

    if ([CLLocationManager locationServicesEnabled]) {
        locationmanager = [[CLLocationManager alloc]init];
        locationmanager.delegate = self;
        [locationmanager requestAlwaysAuthorization];
        currentCity = [NSString new];
        [locationmanager requestWhenInUseAuthorization];
        
        
 
//設定定址精度
        locationmanager.desiredAccuracy = kCLLocationAccuracyBest;
        locationmanager.distanceFilter = 5.0;
        [locationmanager startUpdatingLocation];
    }
}

5，定位失敗後的代理方法

#pragma mark CoreLocation delegate (定位失敗)
//定位失敗後呼叫此代理方法
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    //設定提示提醒使用者開啟定位服務
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"允許定位提示" message:@"請在設定中開啟定位" preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"開啟定位" style:UIAlertActionStyleDefault handler:nil];
    
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];
    [alert addAction:okAction];
    [alert addAction:cancelAction];
    [self presentViewController:alert animated:YES completion:nil];
}

6，定位成功後的代理方法

#pragma mark 定位成功後則執行此代理方法
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    [locationmanager stopUpdatingHeading];
    //舊址
    CLLocation *currentLocation = [locations lastObject];
    CLGeocoder *geoCoder = [[CLGeocoder alloc]init];
    //列印當前的經度與緯度
    NSLog(@"%f,%f",currentLocation.coordinate.latitude,currentLocation.coordinate.longitude);
    
    //反地理編碼
    [geoCoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        if (placemarks.count > 0) {
            CLPlacemark *placeMark = placemarks[0];
            currentCity = placeMark.locality;
            if (!currentCity) {
                currentCity = @"無法定位當前城市";
            }
            
            /*看需求定義一個全域性變數來接收賦值*/
            NSLog(@"----%@",placeMark.country);//當前國家
            NSLog(@"%@",currentCity);//當前的城市
//            NSLog(@"%@",placeMark.subLocality);//當前的位置
//            NSLog(@"%@",placeMark.thoroughfare);//當前街道
//            NSLog(@"%@",placeMark.name);//具體地址
            
        }
    }];
    
}

列印如下：