Book Image

Getting Started with NativeScript

By : Nathanael J. Anderson
Book Image

Getting Started with NativeScript

By: Nathanael J. Anderson

Overview of this book

NativeScript allows you to build a fast cross-platform application that has a native UI. NativeScript is a true cross-platform framework that generates native speed applications using the native components of the host platform, all using JavaScript. Although NativeScript allows you to build your application in JavaScript, you have full access to the host OS from your code, allowing you to easily tweak or use new platform features instantly at native code speeds. Whether you have already developed multiple applications or zero applications, this book will help you to develop your next application in a cross-platform framework quickly, saving you a massive amount of time and money. This book concisely shows you NativeScript’s built-in framework that allows you to rapidly develop a fully-working compiled cross-platform application in just a few chapters. It starts by laying the foundation of NativeScript and working through the fundamentals to create a basic shell of the application. Moving on, you’ll see how to build a full-fledged application step by step. We’ll show you how to use plugins, and how to communicate with the native OS libraries easily so that you can customize your application as if your app was created in Java or Objective C. We then deal with the issues that arise from being cross platform and compensate for the different screen sizes, screen resolutions, and device abilities. Finally, we progress to testing and deploying your app.
Table of Contents (15 chapters)
Getting Started with NativeScript
About the Author
About the Reviewer

Styling the UI

The primary method to style our applications is the NativeScript variation on Cascading Style Sheets (CSS). If you are familiar with developing on a browser, then you should be right at home in NativeScript. If not, we will be walking you through a couple of examples to show how CSS works.

The NativeScript CSS has some differences from the normal CSS, but overall, it works pretty similar to how a browser does. How about we get started and discuss the what, why, how, and which of CSS. What is CSS, why use it, how is CSS applied, and finally, which properties does NativeScript currently support? Then, we will finish by looking at the main application wide app.css file to see how it is applied to our application.

What is CSS?

CSS is a styling language designed to allow you to create the presentation rules for a marked up file. In plain English, it allows you to separate your styles (that is, colors, sizes, positioning) from your markup (that is, the Declarative UI elements like...