iOS 定位于地理反编码

- (void)viewDidLoad {

[self startLocation];
}

//开始定位
-(void)startLocation{
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate = self;
    
    [self.locationManager requestWhenInUseAuthorization];
    if ([[[UIDevice currentDevice]systemVersion]doubleValue]>=8.0) {
        
        [self.locationManager requestWhenInUseAuthorization];
        [self.locationManager requestAlwaysAuthorization];
        
    }
    [self.locationManager startUpdatingLocation];
    
    if ([CLLocationManager locationServicesEnabled]) {
        self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
        self.locationManager.distanceFilter = kCLDistanceFilterNone;
    }else
    {
        NSLog(@"open fail");
    }
    
}
#pragma mark - CoreLocation 代理
#pragma mark 跟踪定位代理方法，每次位置发生变化即会执行（只要定位到相应位置）
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    CLLocation *location=[locations lastObject];
    CLLocationCoordinate2D coordinate=location.coordinate;
    NSLog(@"经度：%f,纬度：%f",coordinate.longitude,coordinate.latitude);
    self.longitude=coordinate.longitude;
    self.latitude=coordinate.latitude;
    //如果不需要实时定位，使用完即使关闭定位服务
    [self.locationManager stopUpdatingLocation];
    [self weiZhi];
}
-(void)weiZhi
{
    self.geocoder=[[CLGeocoder alloc]init];
    CLLocation *rr=[[CLLocation alloc]initWithLatitude:self.latitude longitude:self.longitude];
    [self.geocoder reverseGeocodeLocation:rr completionHandler:^(NSArray *placemarks, NSError *error) {
        
        CLPlacemark *mark=[placemarks objectAtIndex:0];
        UILabel *currentLocation=[[UILabel alloc]initWithFrame:CGRectMake(220, 15, 100, 20)];
        currentLocation.text=[NSString stringWithFormat:@"%@",mark.subLocality];
        
        [self.locationView addSubview:currentLocation];
    }];

}
-(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
     switch (status) {
         case kCLAuthorizationStatusNotDetermined:
         if ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
         {
             [self.locationManager requestWhenInUseAuthorization];
         }
         break;
         default:
         break;
     }


}
//当定位出现错误时就会调用这个方法。
- (void)locationManager:(CLLocationManager *)manager
       didFailWithError:(NSError *)error
{
    NSLog(@"error-%@",error);

}

定位当前的位置。对于 CLPlacemark 还有许多属性，不仅仅可以给出当前位置，还可以给出其他信息，后续研究。。。。