Book Image

RubyMotion iOS Development Essentials

By : Abhishek Nalwaya, Akshat Paul
Book Image

RubyMotion iOS Development Essentials

By: Abhishek Nalwaya, Akshat Paul

Overview of this book

RubyMotion is a revolutionary toolchain for iOS app development. With RubyMotion, you can quickly develop and test native iOS apps for the iPhone and iPad, combining the expressiveness and simplicity of Ruby with the power of the iOS SDK. "RubyMotion iOS Development Essentials" is a hands-on guide for developing iOS apps using RubyMotion. With RubyMotion, you can eliminate the complexity and confusion associated with the development of iOS applications using Objective-C. We'll begin from scratch. Starting by installing RubyMotion, we'll build ourselves up to developing an app that uses the various device capabilities iOS has to offer. What's more, we'll even learn how to launch your app on the App Store! We'll also learn to use iOS SDK classes to create application views. Discover how to use the camera, geolocation, gestures, and other device capabilities to create engaging, interactive apps. We'll develop stunning user interfaces faster with the XCode interface builder and make web apps by using WebView. We'll then augment applications with RubyMotion gems, doing more by writing less code and learn how to write test cases for RubyMotion projects. Finally, we'll understand the app submission process to push your app to Apple's App Store With "RubyMotion iOS Development Essentials", we will learn how to create iOS apps with ease. At the end of each chapter we will have a tangible and running app, which utilizes the concepts we have learnt in that chapter.
Table of Contents (19 chapters)
RubyMotion iOS Development Essentials
About the Authors
About the Reviewers

Basic UI elements

In the previous section, we learned about bars, which play a pivotal role in creating the application view, primarily in the header and footer section of the screen. In this section, we will learn about other user interface elements essential for creating an interactive view. We will not discuss all the UI elements, however, as there are too many of them; we will examine only those that are used most frequently.


A label displays a read-only text view and is used to display information. With the iOS SDK, we make use of the UILabel class to generate labels on screen. The UILabel class has many properties for customizing a label. In the following example, we will use a few of these properties to make our own customized label:

  1. First, update the tab1_controller.rb file with following code inside the app folder:

      def viewDidLoad
           view.backgroundColor = UIColor.scrollViewTexturedBackgroundColor
  2. Next, add the add_form_elements...