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TextFormField(
inputFormatters: [
LengthLimitingTextInputFormatter(10),
]
)
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import 'package:flutter/services.dart';
TextFormField(
inputFormatters: [
LengthLimitingTextInputFormatter(25),
],
),
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const SizedBox(
width: 100.0,
child: TextField(
style: TextStyle(fontSize: 40.0, height: 2.0, color: Colors.black),
),
)