CoreLoation

- (CLLocationManager *)locationManager
{
    if (!_locationManager) {
        _locationManager = [[CLLocationManager alloc] init];
        _locationManager.delegate = self;
        _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        _locationManager.distanceFilter = ;
        [_locationManager requestAlwaysAuthorization];//添加这句
    }
    return _locationManager;
}

#pragma mark - CLLocationManagerDelegate

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    debugMethod();
    CLLocation *currentLocation = [locations lastObject];
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    [geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error) {
        CLPlacemark *placemark = [placemarks firstObject];

    }];

    //关闭定位服务
    [self.locationManager stopUpdatingLocation];
}

#pragma mark - IBAction

//定位按钮被点中
- (IBAction)locationBtnDidClick:(id)sender {
    debugMethod();
    if([CLLocationManager locationServicesEnabled]) {
        [self.locationManager startUpdatingLocation];
    } else {
        [self.tableView makeToast:@"请打开定位服务" duration:1.0 position:@"center"];
    }
}

info.plist中加入两行:
NSLocationAlwaysUsageDescription : 点击"允许"以开启云买手定位服务
NSLocationWhenInUseDescription :  点击"允许"以开启云买手定位服务