How to create a NOPE Flutter form validation in 15 minutes

Creating a fun Flutter form validation animation in 15 minutes or less

In this short tutorial, we will create a NOPE form validation animation in Flutter. All you need is a basic understanding of Flutter and Dart. Let’s get started!

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Table of Contents

• Initial code
• Adding the NOPE animation
• Adding the NOPE hover effect
• Summary

Initial code

Don’t judge me but I am a lazy person. I just wanted to create a simple NOPE animation in Flutter and not think about the form UI and other related code. Thus, I went to the Build a form with validation page in Flutter documentation and copied the code from there:

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    const appTitle = 'NOPE Form Validation Demo';

    return MaterialApp(…