What is a page in Flutter A page is a single screen that is visible at a point in time. You should have something like this: import 'package:flutter/material. We’ll learn about navigation and multi-page apps with Flutter in this article. This is a live code editor configured for Flutter Youre on CodePen, a social development environment designed to do just this Learn more about CodePen. Replace the Flutter default counter application in main.dart with your own stateful widget. Start by creating a new Flutter project in either of VS Code or Android Studio. Only when the user’s input matches the above mentioned do we want to accept their input before making any requests, such as sending to a server or saving in a database. The logic will be defined as such:įirst, for the name field, we want the user to enter a valid first name and last name, which can be accompanied by initials.įor the email field, we want a valid email that contains some characters before the sign, as well as the email domain at the end of the email.įor phone number validation, the user is expected to input 11 digits starting with the digit zero.įinally, for our password validation, we expect the user to use a combination of an uppercase letter, a lowercase letter, a digit, and special character. Creating a form in Flutterįirst, we are going to create a simple login page that has the following fields:įor the validation, we want the users of our app to fill in the correct details in each of these fields. You can find more information on these two approaches in the official Flutter docs. In this article, we’ll cover two approaches to form validation: the form widget and the Provider package. The Flutter SDK provides us with an out-of-the-box widget and functionalities to make our lives easier when using form validation. Getting started with form validation in Flutter Flutter is a cross-platform development framework used to write code and can deploy on various platforms like android, iOS, and desktop.
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