private static void _Init(object sender = null, EventArgs e = null) { string oldID = iCloudID; object token = null; if (NSFileManager.InstancesRespondToSelector("ubiquityIdentityToken")) { token = NSFileManager.DefaultManager().UbiquityIdentityToken(); } if (token == null) { iCloudID = null; _userDefaults.RemoveObject(ID_KEY); } else { NSData data = NSKeyedArchiver.ArchivedData(token); iCloudID = Convert.ToBase64String(data.ToByteArray()); _userDefaults.SetObject(iCloudID, ID_KEY); } Synchronize(); if (iCloudID != oldID) { if (_accountChangedHandlers != null) { _accountChangedHandlers(null, EventArgs.Empty); } } }