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Lightning-Fast Mobile App Development with Galio

Lightning-Fast Mobile App Development with Galio

By : Gheorghe
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Lightning-Fast Mobile App Development with Galio

Lightning-Fast Mobile App Development with Galio

By: Gheorghe

Overview of this book

Galio is a free open source React Native framework that enables beginner-level programmers to quickly build cross-platform mobile apps by leveraging its beautifully designed ready-made components. This book helps you to learn about React Native app development while building impressive out-of-the-box apps with Galio. Lightning Fast Mobile App Development with Galio takes a hands-on approach to implementation and associated methodologies that will have you up and running and productive in no time. Complete with step-by-step explanations of essential concepts, practical examples, and self-assessment questions, you will begin by exploring the basics of React Native and understanding how Galio works. As you make progress, you'll learn how to initialize and configure a React Native app and get to grips with the basics of React Native development. You'll also discover how packages work and how to install Galio as the main dependency, along with understanding how and why Galio helps you to develop apps with ease. Finally, you'll build three practical and exciting apps using React Native and Galio. By the end of this app development book, you'll have learned how to use Galio to quickly create layouts and set up React Native projects for your personal ideas.
Table of Contents (14 chapters)
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Tips and tricks

React Native is great, but all great things have some minor flaws. Because you'll never know what type of error you might encounter, I've decided to create a list of the most common errors and fixes. Let's begin!

Import error

This error usually comes up whenever you've mixed default and named imports. Let's check out the error message:

Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.
Check the render method of 'App'.

As we can see, this error has been caused by a component being imported into the main App.js file. Unfortunately, the error message does not tell you which component or line is breaking the app. To make sure this won't happen again, you'll have to double-check...

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