//1、添加定位管理委托协议 CLLocationManagerDelegate

//2、初始化定位管理对象

self.locationManager=[[CLLocationManager alloc]init];

self.locationManager.delegate=self;

//定位精度

self.locationManager.desiredAccuracy=kCLLocationAccuracyBest;

//多长距离更新一次位置

self.locationManager.distanceFilter=50;



if (UIDevice.currentDevice.systemVersion.integerValue>8.0)

{

    [self.locationManager requestAlwaysAuthorization];

    [self.locationManager requestWhenInUseAuthorization];

}

//开启定位服务

if (self.locationManager.locationServicesEnabled) {

    [self.locationManager startUpdatingLocation];

}

//3、调用系统定位方法

pragma mark - CLLocation Delegate

• (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status

{

switch (status)

{

    case kCLAuthorizationStatusNotDetermined:

        if ([_locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])

        {

            [_locationManager requestAlwaysAuthorization];

        }

        break;

    default:

        break;

}

}

• (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations

{

//获取当前位置信息

CLLocation *location = [locations objectAtIndex:0];

//判断是否是在国内

if (![WGS84TOGCJ02 isLocationOutOfChina:[location coordinate]])

{

//设置锁，防止并发写入

    [[NSUserDefaults standardUserDefaults] synchronize];

    

    //转换后的coord

    CLLocationCoordinate2D coord = [WGS84TOGCJ02 transformFromWGSToGCJ:[location coordinate]];

    _myCoordinate = coord;

    [[NSUserDefaults standardUserDefaults] setObject:[NSString stringWithFormat:@"%f",_myCoordinate.latitude] forKey:KCurrentLat];

    [[NSUserDefaults standardUserDefaults] setObject:[NSString stringWithFormat:@"%f",_myCoordinate.longitude] forKey:KCurrentLng];

    

}



//创建反地理编码对象

CLGeocoder *geocoder = [[CLGeocoder alloc] init];

//将经纬度信息转换成字符串位置信息

[geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *array, NSError *error)

 {

// NSLog(@"placemark:%@",array);

     if (array.count > 0)

     {

         CLPlacemark *placemark = [array objectAtIndex:0];

         if (![DGFunction xfunc_check_strEmpty:placemark.locality])

         {

             [[ NSUserDefaults standardUserDefaults] setObject:placemark.locality forKey:@"localCity"];

             [[NSUserDefaults standardUserDefaults] synchronize];

// NSDictionary *dic = @{@"city":placemark.locality};

             if (![DGFunction xfunc_check_strEmpty:placemark.locality]) {

                 [[NSUserDefaults standardUserDefaults] setObject:placemark.administrativeArea forKey:k_Current_Province];

             }

             

             if (![DGFunction xfunc_check_strEmpty:placemark.locality]) {

                 [[NSUserDefaults standardUserDefaults] setObject:placemark.locality forKey:k_Current_City];

             }

             

             if (![DGFunction xfunc_check_strEmpty:placemark.subLocality]) {

                 [[NSUserDefaults standardUserDefaults] setObject:placemark.subLocality forKey:k_Current_Area];

             }

             

             [[NSUserDefaults standardUserDefaults] synchronize];

             NSLog(@"locality:%@ subLocality:%@",placemark.locality,placemark.subLocality);

             //关闭定位服务

[_locationManager stopUpdatingLocation];

         }

     }

 }];

}