From 662476c315c989a14c5921c6d5f6a15c077e59dc Mon Sep 17 00:00:00 2001
From: zoontek <zoontek@gmail.com>
Date: Thu, 6 Sep 2018 15:13:33 +0200
Subject: [PATCH] Fix android generating old language code for ISO 639

---
 .../rnlanguages/RNLanguagesModule.java        | 27 +++++++++++++------
 1 file changed, 19 insertions(+), 8 deletions(-)

diff --git a/android/src/main/java/com/reactcommunity/rnlanguages/RNLanguagesModule.java b/android/src/main/java/com/reactcommunity/rnlanguages/RNLanguagesModule.java
index 93c9412..526ade9 100644
--- a/android/src/main/java/com/reactcommunity/rnlanguages/RNLanguagesModule.java
+++ b/android/src/main/java/com/reactcommunity/rnlanguages/RNLanguagesModule.java
@@ -78,19 +78,30 @@ public class RNLanguagesModule extends ReactContextBaseJavaModule {
   }
 
   private String toLanguageTag(Locale locale) {
+    String languageTag;
+
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-      return locale.toLanguageTag();
+      languageTag = locale.toLanguageTag();
+    } else {
+      StringBuilder builder = new StringBuilder();
+      builder.append(locale.getLanguage());
+
+      if (locale.getCountry() != null) {
+        builder.append("-");
+        builder.append(locale.getCountry());
+      }
+
+      languageTag = builder.toString();
     }
 
-    StringBuilder builder = new StringBuilder();
-    builder.append(locale.getLanguage());
-
-    if (locale.getCountry() != null) {
-      builder.append("-");
-      builder.append(locale.getCountry());
+    if (languageTag.matches("^(iw|in|ji).*")) {
+      languageTag = languageTag
+        .replace("iw","he")
+        .replace("in","id")
+        .replace("ji","yi");
     }
 
-    return builder.toString();
+    return languageTag;
   }
 
   private void registerReceiver() {