Flutter TextEditingController

Setting up a form to validate Start by creating a new Flutter project in either of VS Code or Android Studio . Replace the Flutter default counter application in main.dart with your own stateful widget. The formKey handles the state of the form, validation, and saving.

TextField is a simple text field. (you don’t care about user input) TextFormField is a text field to be used in a form (you care about user input) . If you don’t need to validate TextField . If you need to validate user input, use TextFormField with validator .13 Şub 2019

TextFormField class Null safety. A FormField that contains a TextField . This is a convenience widget that wraps a TextField widget in a FormField. A Form ancestor is not required. The Form simply makes it easier to save, reset, or validate multiple fields at once.