Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS Programming

Adding the Hello World Label

By default, Xcode creates a project that is set to run on the iPhone or iPad; when you create a project, the next one uses your previous settings. New projects start with all the classes and supporting files you need to create your application. This includes a basic home screen with no content. When you run a new project, it shows a blank white screen.

The quickest way to see Hello World on the screen is to add a label to your project. With your project open, follow these steps (see Figure 2-6):

1. Check that the project is set to run in the simulator by looking at the right side of the scheme popup menu (area 2 in Figure 2-5.) If the right-hand side does not say “iPhone Retina (4-inch),” click on that side of the ...