proper locale country handling

app/src/main/java/awais/instagrabber/utils/LocaleUtils.java

@@ -22,7 +22,8 @@ public final class LocaleUtils {
 
         final String lang = LocaleUtils.getCorrespondingLanguageCode(baseContext);
 
-        currentLocale = TextUtils.isEmpty(lang) ? defaultLocale : new Locale(lang);
+        currentLocale = TextUtils.isEmpty(lang) ? defaultLocale :
+                (lang.contains("_") ? new Locale(lang.split("_")[0], lang.split("_")[1]) : new Locale(lang));
         Locale.setDefault(currentLocale);
 
         final Resources res = baseContext.getResources();
@@ -62,7 +63,7 @@ public final class LocaleUtils {
         if (appLanguageIndex == 1) return "en";
         if (appLanguageIndex == 2) return "fr";
         if (appLanguageIndex == 3) return "es";
-        if (appLanguageIndex == 4) return "zh-rCN";
+        if (appLanguageIndex == 4) return "zh_CN";
         if (appLanguageIndex == 5) return "in";
         if (appLanguageIndex == 6) return "it";
         if (appLanguageIndex == 7) return "de";
@@ -72,7 +73,7 @@ public final class LocaleUtils {
         if (appLanguageIndex == 11) return "fa";
         if (appLanguageIndex == 12) return "mk";
         if (appLanguageIndex == 13) return "vi";
-        if (appLanguageIndex == 14) return "zh-rTW";
+        if (appLanguageIndex == 14) return "zh_TW";
         if (appLanguageIndex == 15) return "hi";
         if (appLanguageIndex == 16) return "cs";