make a button null if a textfield is empty flutter
class MyWidget extends StatelessWidget {
final TextEditingController _inputController = TextEditingController();
@override
void dispose() {
_inputController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Column(children: [
TextField(controller: _inputController),
ValueListenableBuilder<TextEditingValue>(
valueListenable: _inputController,
builder: (context, value, child) {
return ElevatedButton(
onPressed: value.text.isNotEmpty ? () {} : null,
child: Text('I am disabled when text is empty'),
);
},
),
]);
}
}