native.m

//
//  native.m
//  yolo
//
//  Created by Soheil Yasrebi on 4/1/15.
//  Copyright (c) 2015 Facebook. All rights reserved.
//

#import "RCTBridge.h"
#import "RCTBridgeModule.h"
#import "RCTEventDispatcher.h"

@import CoreLocation;

@interface Native : NSObject <RCTBridgeModule>
@end

@implementation Native

@synthesize bridge = _bridge;

- (void)locationFromLatitude:(CLLocationDegrees) latitude longitude:(CLLocationDegrees)longitude
{
    RCT_EXPORT();
    CLLocation *loc = [[CLLocation alloc] initWithLatitude:latitude longitude:longitude];
    CLGeocoder *reverseGeocoder = [[CLGeocoder alloc] init];
    [reverseGeocoder reverseGeocodeLocation:loc completionHandler:^(NSArray *placemarks, NSError *error)
     {
         if (error){
             return;
         }
         
         CLPlacemark *myPlacemark = [placemarks objectAtIndex:0];
         NSString *countryCode = myPlacemark.ISOcountryCode;
         NSString *countryName = myPlacemark.country;
         NSString *cityName = [myPlacemark.addressDictionary objectForKey:@"City"];
         
         [self.bridge.eventDispatcher sendDeviceEventWithName:@"LocationInfo"
                                                      body:@{@"countryCode": countryCode,
                                                             @"countryName": countryName,
                                                             @"cityName": cityName}];
         
         
     }];
}

@end

@soheil - you should turn this into a npm package! it's pretty easy to do, you can check out https://github.com/brentvatne/react-native-linear-gradient for a simple example

I think someone did: https://github.com/devfd/react-native-geocoder
Haven't tested it yet, though.

Tested it, works flawlessly. 👍