O'Reilly logo

iOS App Development Portable Genius by Richard Wentk

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 4: What Are Applications Made Of?

9781118462133-co0401.tif

Applications are made of code behind a user interface (UI). iOS uses a message-driven system to ask your application for a response at critical moments. App code is a collection of message handlers that creates these responses. The structure of an app links messages to visible screen content. Messages from the UI trigger events in the app. Screen content is dynamic and can be animated or changed as needed.

Understanding Applications

Understanding App Structure

Introducing Views, Nib Files, and Storyboards

Understanding Views and Controllers

Appreciating Graphic Design

Summarizing UI Creation

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required