@ -315,13 +315,10 @@ class _SettingsState extends State<Settings> {
textFields: [
DialogTextField(
validator: (text) {
if (int.tryParse(text) == null || int.tryParse(text) < 0) {
return L10n.of(context).pleaseEnter4Digits;
if (text.length == 0 || (text.length == 4 && int.tryparse(text) > 0)) {
return null;
}
if (text.length != 4 && text.isNotEmpty) {
},
keyboardType: TextInputType.number,
obscureText: true,