Chapter 3. Views, Outlets, and Actions
WHAT YOU WILL LEARN IN THIS CHAPTER
How to declare and define outlets
How to declare and define actions
How to connect outlets and actions to the views in your View window
How to use the UIAlertView to display an alert view to the user
How to use the UIActionSheet to display some options to the user
How to use the UIPageControl to control paging
How to use the UIImageView to display images
How to use the UIWebView to display Web content in your application
How to add views dynamically to your application during runtime
In the previous chapter, you built a simple Hello World! iPhone application without understanding much of the underlying details of how things work together. In fact, one of the greatest hurdles in learning iPhone programming is the large number of details you need to learn before you can get an application up and running. This book aims to make the iPhone programming experience both fun and bearable. Hence, this chapter starts with the basics of creating the user interface (UI) of an iPhone application and how your code connects with the various graphical widgets.
Outlets and Actions
One of the first things you need to understand in iPhone programming is outlets and actions. If you are familiar with traditional programming languages such as Java or C#, this is a concept that requires some time to get used to — the concepts are similar, just that it is a different way of doing things. At the end of this section, you will have a solid understanding ...