What is a Flutter UI?

Built-in types and core primitives for a Flutter application . To use, import dart:ui . This library exposes the lowest-level services that Flutter frameworks use to bootstrap applications, such as classes for driving the input, graphics text, layout, and rendering subsystems.

Reactive user interfaces : A core concept for Flutter user interface development. An introduction to widgets: The fundamental building blocks of Flutter user interfaces. The rendering process: How Flutter turns UI code into pixels.

Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, and desktop from a single codebase . In this codelab, you’ll create a simple chat application for Android, iOS, and (optionally) the web.26 Eki 2021