FLUTTER FORM FIELD VALIDATOR HOW TO
FLUTTER FORM FIELD VALIDATOR ANDROID

When set to TextInputAction.next the next icon appears as the action key.

TextInputAction: its value determines the icon to appear as the keyboard’s action key. characters present when the text field gains focus. For example, passing TextInputType.emailAddress to the keyboardType property of the email address TextFormField widget will display the appropriate keyboard for typing an email address with and. KeyboardType: the type of soft keyboard to pop up when the text field gains focus, passing an appropriate text input type value to this property will add to a better user experience. Let's discuss the properties passed to the TextFormField widgets The four TextFormFields widgets are for capturing the user's name, phone number, email address, and password. Step 1: Let's Create an Instance of a Form Widget with a Global Key that holds the Form's State.Įnter fullscreen mode Exit fullscreen mode A user signup form with four input fields for capturing the user's name, phone, email, and password will be used as a case study.Īt this point, you must have created a Flutter project with any valid name of your choice. Let's dive into how Form and TextFormField widgets, and some of their properties can be used to accomplish ease of navigation from one input field to another, and form validation. A TextFormField class, on the other hand, is a widget that wraps a TextField widget in a FormField widget.

FLUTTER FORM FIELD VALIDATOR ANDROID

Note: This article is intended for readers with a basic knowledge of Flutter (i.e., readers who can create and run a Flutter application on an Android or iOS device, and also understand what widgets (both stateful and stateless) are, as used in Flutter).Ī Flutter Form class is a widget that can be used to wrap/group form fields for easy save, reset, or validation of the grouped form fields.

Discuss and show how some Form and TextFormField widgets’ properties can be used for a basic form field validation.

Discuss and show how some properties of a TextFormField widget can be used to achieve ease of navigation from one TextFormField to another.Explain what Flutter Form and TextFormField classes are.

FLUTTER FORM FIELD VALIDATOR HOW TO

The aim of this article is to demonstrate how to create and, handle a Flutter Form with TextFormField widgets for a better user experience. That being said, it's important to make input forms readily accessible and easy to navigate by users. We see them play crucial roles in scenarios like user signup & login, sending a message on an instant messaging app, checking out orders on an e-commerce app, and so on. Input forms are used in software applications to collect data from users, they're an indispensable component that makes up the user interfaces of any application.

Flutter form field validator