![]() ![]() Finally, we have added a button to submit the form. Inside the TextFormField, we have used InputDecoration that provides the look and feel of your form properties such as borders, labels, icons, hint, styles, etc. Here in the TestForm widget, we defined the form. ![]() So let's see the full source code of main.dart file. cupertinoicons: 0.1.2 validators: 2.0.0+1 Step 5: Define the Form with Validation. Use with the CupertinoIcons class for iOS style icons. Inside the build method of this class, we have added some custom style and use the TextFormField widget to provide the form fields such as name, phone number, date of birth, or just a normal field. dependencies: flutter: sdk: flutter The following adds the Cupertino Icons font to your application. This key holds a FormState and can use to retrieve the form widget. Inside this class, we define a global key as _formKey. In this code snippet, we have created a custom class named M圜ustomForm. First, create a Flutter project and replace the following code in the main.dart file. ![]() This widget renders a material design text field and also allows us to display validation errors when they occur. Each individual form field should be wrapped in a FormField widget, with the Form widget as a common ancestor of all of those. The form widget uses child widget TextFormField to provide the users to enter the text field. This key uniquely identifies the form and allows you to do any validation in the form fields. When you create a form, it is necessary to provide the GlobalKey. The form widget acts as a container, which allows us to group and validate the multiple form fields. Creating Formįlutter provides a Form widget to create a form. A form can contain text fields, buttons, checkboxes, radio buttons, etc. They can perform many tasks, which depend on the nature of your business requirements and logic, such as authentication of the user, adding user, searching, filtering, ordering, booking, etc. It is mainly used to interact with the app as well as gather information from the users. Forms are an integral part of all modern mobile and web applications. ![]()
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