地理编码

- (void)geocodeBtnClick
{
    // 0.获取用户输入的位置
    NSString *addressStr = self.addressField.text;
    if (addressStr == nil || addressStr.length == 0) {
        NSLog(@"请输入地址");
        return;
    }
    // 1.创建地理编码对象
   
    // 2.利用地理编码对象编码
    // 根据传入的地址获取该地址对应的经纬度信息
    [self.geocoder geocodeAddressString:addressStr completionHandler:^(NSArray *placemarks, NSError *error) {
       
        if (placemarks.count == 0 || error != nil) {
            return ;
        }
        // placemarks地标数组, 地标数组中存放着地标, 每一个地标包含了该位置的经纬度以及城市/区域/国家代码/邮编等等...
        // 获取数组中的第一个地标
        CLPlacemark *placemark = [placemarks firstObject];
//        for (CLPlacemark  *placemark in placemarks) {
//            NSLog(@"%@ %@ %f %f", placemark.name, placemark.addressDictionary, placemark.location.coordinate.latitude, placemark.location.coordinate.longitude);
        self.latitudeLabel.text = [NSString stringWithFormat:@"%f", placemark.location.coordinate.latitude];
        self.longitudeLabel.text = [NSString stringWithFormat:@"%f", placemark.location.coordinate.longitude];
        NSArray *address = placemark.addressDictionary[@"FormattedAddressLines"];
        NSMutableString *strM = [NSMutableString string];
        for (NSString *str in address) {
            [strM appendString:str];
        }
        self.detailAddressLabel.text = strM;
       
//        }
      
       
       
    }];
}
- (CLGeocoder *)geocoder
{
    if (!_geocoder) {
        _geocoder = [[CLGeocoder alloc] init];
    }
    return _geocoder;
}

反地理编码
- (void)reverseGeocode
{
    // 1.获取用户输入的经纬度
    NSString *longtitude = self.longtitudeField.text;
    NSString *latitude = self.latitudeField.text;
    if (longtitude.length == 0 ||
        longtitude == nil ||
        latitude.length == 0 ||
        latitude == nil) {
        NSLog(@"请输入经纬度");
        return;
    }
   
    // 2.根据用户输入的经纬度创建CLLocation对象
    CLLocation *location = [[CLLocation alloc] initWithLatitude:[latitude doubleValue]  longitude:[longtitude doubleValue]];
   
    // 3.根据CLLocation对象获取对应的地标信息
    [self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
       
        for (CLPlacemark *placemark in placemarks) {
            NSLog(@"%@ %@ %f %f", placemark.name, placemark.addressDictionary, placemark.location.coordinate.latitude, placemark.location.coordinate.longitude);
            self.reverseDetailAddressLabel.text = placemark.locality;
        }
    }];
}

地理编码

原文：http://www.cnblogs.com/akkelyn/p/5083556.html