Book Image

Flutter for Beginners

By : Alessandro Biessek
Book Image

Flutter for Beginners

By: Alessandro Biessek

Overview of this book

Google Flutter is a cross-platform mobile framework that makes it easy to write high-performance apps for Android and iOS. This book will help you get to grips with the basics of the Flutter framework and the Dart programming language. Starting from setting up your development environment, you’ll learn to design the UI and add user input functions. You'll explore the navigator widget to manage app routes and learn to add transitions between screens. The book will even guide you through developing your own plugin and later, you’ll discover how to structure good plugin code. Using the Google Places API, you'll also understand how to display a map in the app and add markers and interactions to it. You’ll then learn to improve the user experience with features such as map integrations, platform-specific code with native languages, and personalized animation options for designing intuitive UIs. The book follows a practical approach and gives you access to all relevant code files hosted at github.com/PacktPublishing/Flutter-for-Beginners. This will help you access a variety of examples and prepare your own bug-free apps, ready to deploy on the App Store and Google Play Store. By the end of this book, you’ll be well-versed with Dart programming and have the skills to develop your own mobile apps or build a career as a Dart and Flutter app developer.
Table of Contents (21 chapters)
Free Chapter
1
Section 1: Introduction to Dart
5
Section 2: The Flutter User Interface - Everything is a Widget
10
Section 3: Developing Fully Featured Apps
15
Section 4: Advanced Flutter - Resources to Complex Apps

Creating custom widgets

When creating UIs with Flutter, we will always have to create some custom widgets; we cannot and do not want to escape from it. After all, the composition of widgets for building unique interfaces is what Flutter enables so well.

In the application, we have created some of the layout already, and the only custom widgets we have created are the FavorsPage and RequestFavorPage widgets.

You may have noted as well that due to the way of composing layouts in Flutter, the code may become huge and hard to maintain. To address this, we have created small methods that split the creation of the widget into parts to build up the full layout.

Splitting widgets into small methods is good for helping the code become smaller, but it's not as good for Flutter. In our case, we do not have a complex layout yet, so this is OK, but in the case of a complex layout where...