Build a Simple Flutter To-Do App with Shared Preferences and Singleton Class

Hey there! If you’re learning Flutter and want to create a To-Do app, then you’ve come to the right place. In this tutorial, I’ll show you how to use Shared Preferences to store data locally in your app and apply the Singleton Design Pattern to keep the code clean and reusable.

Simple Flutter To-Do App using Shared Preferences and Singleton Pattern

I’ll walk you through a basic To-Do app where you can add tasks, mark them as completed, and save the list even after the app is closed and reopened.

What is Shared Preferences in Flutter?

First, let’s quickly recap what Shared Preferences is. Shared Preferences is a simple key-value storage system in Flutter that allows you to store small amounts of data (like user settings, preferences, or simple app data) persistently.

It’s perfect for our To-Do app since we only need to store a list of tasks.

Instead of using a local database or more complex solutions, Shared Preferences provides a lightweight way to save small amounts of data. It’s fast and works great for apps that need to remember settings or lists, like our To-Do app.

Why Use Singleton Class in Flutter?

You might be wondering, why use a Singleton class for Shared Preferences? The…