In this article, I will be implementing Flutter textfield maxlength, what’s its purpose , usage and how to implement it in Flutter textfield. I will be implementing it step by step so you will have a detailed knowledge of how to implement Flutter textfield maxlength in Flutter textfield. Let’s now stop wasting your valuable time and start implementing Flutter textfield maxlength in Flutter app.
Outline
- What is Flutter Textfield Maxlength?
- Implementing Flutter Textfield Maxlength
- Max Length Enforced
- Max Length Enforcement
- Flutter Textfield Maxlength Hide
- Beautiful Flutter Textfield Source Code
- Conclusion
What is Flutter Textfield Maxlength?
Flutter textfield maxlength, as the name suggests, it is used to specify the maximum length of characters that a Flutter textfield would have. It means that we can specify the length of input that the Flutter textfield will get from user. Don’t worry, I will explain it using proper example then you will understand it better. Let’s start implementing it in the next sections.
Implementing Flutter Textfield Maxlength
To implement and specify Flutter textfield maxlength, you have to use the max length constructor of the Flutter textfield. This constructor takes an integer value means number without decimal(e.g. don’t use 34.8). For demonstration, I have used a value 20 and have passed it to the max length constructor of Flutter textfield. See the below code for this:
TextField( maxLength: 20, )


Max Length Enforced
Using the max length enforced constructor of the Flutter textfield, you can extent the length of input but it will make the color of Flutter textfield border and the Flutter textfield maxlength counter to red as you can see in the below image.
maxLengthEnforced: false

Max Length Enforcement
It works like the max length enforced but unlike max length enforced, it is not deprecated, so you can use it instead of max length enforced. It is simple to implement, use the max length enforcement constructor of the Flutter textfield, see the code below:
maxLengthEnforcement: MaxLengthEnforcement.enforced
maxLengthEnforcement: MaxLengthEnforcement.none
You can hide the counter text. It can be used when you don’t want to show the counter but still want the max length to work and have a specific length. For that, see the below section to implement Flutter textfield maxlength hide.
Flutter Textfield Maxlength Hide
To hide the max length counter of Flutter textfield, you can to use the counter text constructor of the input decoration class of the decoration constructor. For demonstration, I have passed it an empty string. See the below code:
decoration: InputDecoration( counterText: '', )

Beautiful Flutter Textfield Source Code
import 'package:flutter/material.dart'; void main() { runApp(const MyApp()); } class MyApp extends StatelessWidget { const MyApp({Key? key}) : super(key: key); @override Widget build(BuildContext context) { return MaterialApp( debugShowCheckedModeBanner: false, home: Homepage(), ); } } class Homepage extends StatelessWidget { @override Widget build(BuildContext context) { return SafeArea( child: Scaffold( body: Center( child: Padding( padding: EdgeInsets.symmetric(horizontal: 40), child: TextField( style: TextStyle(color: Colors.purple), maxLength: 20, decoration: InputDecoration( prefixIcon: Icon( Icons.person, color: Colors.purple, ), suffixIcon: Icon( Icons.visibility, color: Colors.purple, ), labelText: 'Enter your name', labelStyle: TextStyle(color: Colors.purple.withOpacity(.8)), enabledBorder: OutlineInputBorder( borderSide: BorderSide(color: Colors.purple), borderRadius: BorderRadius.circular(30).copyWith( bottomRight: Radius.circular(0), topLeft: Radius.circular(0))), focusedBorder: OutlineInputBorder( borderSide: BorderSide(color: Colors.purple), borderRadius: BorderRadius.circular(30).copyWith( bottomRight: Radius.circular(0), topLeft: Radius.circular(0)))), ))), )); } }
Conclusion
In conclusion, we have implemented and now have a complete understanding of how to implement Flutter textfield maxlength in Flutter app. I would be looking forward to have your valuable feedback and would love to see you at my other posts on amazing Flutter widgets, beautiful Flutter templates, and amazing Flutter animations. That’s it for this article. Thanks for reading.
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