Book Image

Flutter Cookbook

By : Simone Alessandria, Brian Kayfitz
4 (1)
Book Image

Flutter Cookbook

4 (1)
By: Simone Alessandria, Brian Kayfitz

Overview of this book

“Anyone interested in developing Flutter applications for Android or iOS should have a copy of this book on their desk.” – Amazon 5* Review Lauded as the ‘Flutter bible’ for new and experienced mobile app developers, this recipe-based guide will teach you the best practices for robust app development, as well as how to solve cross-platform development issues. From setting up and customizing your development environment to error handling and debugging, The Flutter Cookbook covers the how-tos as well as the principles behind them. As you progress, the recipes in this book will get you up to speed with the main tasks involved in app development, such as user interface and user experience (UI/UX) design, API design, and creating animations. Later chapters will focus on routing, retrieving data from web services, and persisting data locally. A dedicated section also covers Firebase and its machine learning capabilities. The last chapter is specifically designed to help you create apps for the web and desktop (Windows, Mac, and Linux). Throughout the book, you’ll also find recipes that cover the most important features needed to build a cross-platform application, along with insights into running a single codebase on different platforms. By the end of this Flutter book, you’ll be writing and delivering fully functional apps with confidence.
Table of Contents (17 chapters)
About Packt

How to do it...

Let's add a second screen to the app and lift the State higher in the tree: 

  1. Update the PlanProvider class so that it can handle multiple plans. Change the storage property from a single plan to a list of plans:
final _plans = <Plan>[];
  1. We also need to update the of-context method so that it returns the correct type. This will temporarily break the project, but we will fix this in the next few steps:
static List<Plan> of(BuildContext context) {
final provider = context.dependOnInheritedWidgetOfExactType
return provider._plans;
  1. PlanProvider is also going to have a new home in the widget tree. Instead of sitting underneath MaterialApp, we actually want this global state widget to be placed above it. Update the build method in main.dart so that it looks like this:
return PlanProvider(
child: MaterialApp(
theme: ThemeData(primarySwatch: Colors.purple),
  1. We can now create a new screen to manage...