7.cs

public static class PlayerPrefsUtils
{
   private const string Orientation = "Orientation";

   public static bool IsPortrait()
   {
       return PlayerPrefs.GetInt(Orientation, 1) == 1;
   }

   public static bool HasOrientation()
   {
       return PlayerPrefs.HasKey(Orientation);
   }

   public static void SavePortrait(bool isPortrait)
   {
       PlayerPrefs.SetInt(Orientation, isPortrait ? 1 : 0);
   }
}