#551 Added fallback variant for user avatar. Will be used for backward...

#551 Added fallback variant for user avatar. Will be used for backward compatibilty once we add custom avatars.

core/src/cz/nic/tablexia/menu/user/UserAvatarDefinition.java

 package cz.nic.tablexia.menu.user;
 
 import cz.nic.tablexia.loader.application.ApplicationAtlasManager;
+import cz.nic.tablexia.util.Log;
 
 /**
  * Created by Vitaliy Vashchenko on 8.1.16.
@@ -21,6 +22,8 @@ public enum  UserAvatarDefinition {
     AVATAR_11(ApplicationAtlasManager.USERMENU_MENUITEM_AVATAR_11,7),
     AVATAR_12(ApplicationAtlasManager.USERMENU_MENUITEM_AVATAR_12,8);
 
+    private static final UserAvatarDefinition FALLBACK_VARIANT = AVATAR_0;
+
     private String avatarPath;
     private int order;
 
@@ -38,10 +41,15 @@ public enum  UserAvatarDefinition {
     }
 
     public static String getAvatar(String id){
-        return values()[Integer.parseInt(id)].getAvatarPath();
+        return getAvatar(Integer.parseInt(id));
     }
 
     public static String getAvatar(int id){
+        if(id < 0 || id >= values().length) {
+            Log.info(UserAvatarDefinition.class, "Couldn't find avatar with id: " + id + ". Using Fallback avatar instead!");
+            return FALLBACK_VARIANT.getAvatarPath();
+        }
+
         return values()[id].getAvatarPath();
     }