A complete guide to a scalable app in Flutter — Part 3 — UI layer with a MVVM pattern powered by provider

Welcome back, dear readers, to the third installment of our comprehensive guide on building a robust and scalable app with a clean architecture. In this part, we dive headfirst into the exciting realm of the UI layer, a fundamental aspect of understanding the principles we introduced in Part 1. Here, we embark on a journey to craft a versatile toolkit for constructing UI modules, be it views, pages, fragments, or more. These modules are designed to be highly responsive to changes in state and maintain seamless communication with the data layer exclusively through a ViewModel. Our approach aligns with the principles of the MVVM (Model-View-ViewModel) architecture and leverages the power of the Provider library. So, let’s roll up our sleeves and embark on this UI journey!

Since we are talking about UI, let’s start by looking at what we are going to build:

The 3 principles of our UI pattern

A Predictable information flow

In the world of app development, a well-structured information flow is not just beneficial; it’s absolutely essential. When it comes to front-end applications, everything starts with the View, which serves as the user’s portal. User…