Flutter UI and UX: Material Design, Cupertino Widgets, and User Inputs

Design language by Google.

In this unit, we will delve into the world of Flutter UI and UX. We will explore Material Design and Cupertino Widgets, and learn how to handle user inputs in a Flutter application.

Material Design and Cupertino Widgets

When developing applications with Flutter, you have the ability to use either Material Design (Android) or Cupertino (iOS) widgets, or even a mix of both.

Material Design is a design language developed by Google, which gives a flat, colorful, and realistic appearance to the UI elements. Flutter provides a rich set of Material widgets. Some of the commonly used Material widgets include AppBar, Drawer, SnackBar, and FloatingActionButton.

Cupertino Widgets are Flutter's iOS-style widgets, which follow Apple's iOS design language. They are used to create iOS-themed applications. Some of the commonly used Cupertino widgets include CupertinoNavigationBar, CupertinoTabBar, CupertinoButton, and CupertinoSwitch.

Working with User Inputs

User inputs are a crucial part of any application. Flutter provides a variety of widgets to handle user inputs.

Buttons: Flutter provides several types of buttons, such as FlatButton, RaisedButton, IconButton, and FloatingActionButton. You can handle button presses by providing a function to the onPressed parameter of the button.

Forms: Flutter provides the Form widget to create a form. Inside a Form, you can use the TextFormField widget to create text fields. You can validate the input and provide feedback to the user by using the validator parameter of the TextFormField.

Gestures: In addition to buttons and forms, Flutter allows you to respond to a wide variety of gestures, such as taps, drags, and scales. The GestureDetector widget provides a way to handle these gestures.

In conclusion, this unit provides a comprehensive understanding of how to design the UI and handle user inputs in a Flutter application. By understanding and implementing Material Design and Cupertino widgets, you can create beautiful and responsive applications that look and feel natural on both Android and iOS platforms.