ADD: locale support

README.md

@@ -99,10 +99,17 @@ Geocoder.fallbackToGoogle(MY_KEY);
 
 // use the lib as usual
 let ret = await Geocoder.geocodePosition({lat, lng})
+
+const locale = 'en'; // Two symbol locale code.
+let ret = await Geocoder.geocodePosition({lat, lng}, locale);
+
 // you get the same results
 
 ```
 
+By default `locale` is 'en'.
+
+
 ## With async / await
 ```
 try {

android/src/main/java/com/devfd/RNGeocoder/RNGeocoderModule.java

@@ -15,14 +15,15 @@
 
 import java.io.IOException;
 import java.util.List;
+import java.util.Locale;
 
 public class RNGeocoderModule extends ReactContextBaseJavaModule {
 
-    private Geocoder geocoder;
+    private ReactApplicationContext reactContext;
 
-    public RNGeocoderModule(ReactApplicationContext reactContext) {
-        super(reactContext);
-        geocoder = new Geocoder(reactContext.getApplicationContext());
+    public RNGeocoderModule(ReactApplicationContext context) {
+        super(context);
+        reactContext = context;
     }
 
     @Override
@@ -32,6 +33,8 @@ public String getName() {
 
     @ReactMethod
     public void geocodeAddress(String addressName, Promise promise) {
+        Geocoder geocoder = new Geocoder(reactContext.getApplicationContext());
+
         if (!geocoder.isPresent()) {
           promise.reject("NOT_AVAILABLE", "Geocoder not available for this platform");
           return;
@@ -48,7 +51,10 @@ public void geocodeAddress(String addressName, Promise promise) {
     }
 
     @ReactMethod
-    public void geocodePosition(ReadableMap position, Promise promise) {
+    public void geocodePosition(ReadableMap position, String locale, Promise promise) {
+        Locale geocoderLocale = new Locale(locale);
+        Geocoder geocoder = new Geocoder(reactContext.getApplicationContext(), geocoderLocale);
+
         if (!geocoder.isPresent()) {
             promise.reject("NOT_AVAILABLE", "Geocoder not available for this platform");
             return;

ios/RNGeocoder/RNGeocoder.m

@@ -12,6 +12,7 @@ + (CLLocation *)CLLocation:(id)json
 
   double lat = [RCTConvert double:json[@"lat"]];
   double lng = [RCTConvert double:json[@"lng"]];
+
   return [[CLLocation alloc] initWithLatitude:lat longitude:lng];
 }
 
@@ -23,6 +24,7 @@ @implementation RNGeocoder
 RCT_EXPORT_MODULE();
 
 RCT_EXPORT_METHOD(geocodePosition:(CLLocation *)location
+                  NSString: locale
                   resolver:(RCTPromiseResolveBlock)resolve
                   rejecter:(RCTPromiseRejectBlock)reject)
 {
@@ -34,19 +36,35 @@ @implementation RNGeocoder
     [self.geocoder cancelGeocode];
   }
 
-  [self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
-
-    if (error) {
-      if (placemarks.count == 0) {
-          return reject(@"NOT_FOUND", @"geocodePosition failed", error);
-      }
+  NSLocale *geocoderLocale = [[NSLocale alloc] initWithLocaleIdentifier:locale];
 
-      return reject(@"ERROR", @"geocodePosition failed", error);
+    if (@available(iOS 11.0, *)) {
+        [self.geocoder reverseGeocodeLocation:location preferredLocale:geocoderLocale completionHandler:^(NSArray *placemarks, NSError *error) {
+            if (error) {
+                if (placemarks.count == 0) {
+                    return reject(@"NOT_FOUND", @"geocodePosition failed", error);
+                }
+
+                return reject(@"ERROR", @"geocodePosition failed", error);
+            }
+
+            resolve([self placemarksToDictionary:placemarks]);
+
+        }];
+    } else {
+        [self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
+            if (error) {
+                if (placemarks.count == 0) {
+                    return reject(@"NOT_FOUND", @"geocodePosition failed", error);
+                }
+
+                return reject(@"ERROR", @"geocodePosition failed", error);
+            }
+
+            resolve([self placemarksToDictionary:placemarks]);
+
+        }];
     }
-
-    resolve([self placemarksToDictionary:placemarks]);
-
-  }];
 }
 
 RCT_EXPORT_METHOD(geocodeAddress:(NSString *)address

js/geocoder.js

@@ -10,12 +10,12 @@ export default {
     this.apiKey = key;
   },
 
-  geocodePosition(position) {
+  geocodePosition(position, locale = "en") {
     if (!position || !position.lat || !position.lng) {
       return Promise.reject(new Error("invalid position: {lat, lng} required"));
     }
 
-    return RNGeocoder.geocodePosition(position).catch(err => {
+    return RNGeocoder.geocodePosition(position, locale).catch(err => {
       if (!this.apiKey) { throw err; }
       return GoogleApi.geocodePosition(this.apiKey, position);
     });