When you're building your first app, I want you to keep one thing in mind: forget about the code and keep doing. To give you a sneak peak, figure 3-2 is your final deliverable. After going through the challenges in this chapter, you will keep improving your first app to make it more interesting. Extremely simple but it helps you kick off your iOS programming journey. When a user taps the button, the app shows a welcome message. Your first app, as displayed in figure 3-1, is very simple and just shows a 'Hello World' button. I don't want to scare you away from learning programming. Lastly, it makes you think programming is not difficult.You'll learn how to compile a program, build the app and test it using the built-in simulator.Even if you've used Xcode before, you'll learn what's new in the latest version of Xcode. You'll learn how to create an Xcode project and lay out your user interface using Interface Builder. It also gives you a basic introduction to the Xcode environment.It gives you an overview of the syntax and structure of Swift, the new programming language of iOS.Let's follow the programming tradition and create a 'Hello World' app using Xcode.ĭespite its simplicity, the 'Hello World' program serves a few purposes: It's a tradition in the programming world. It's a very simple program that outputs 'Hello, World' on the screen of a device. Hello World is a program for the first-time programmer to create. You may have heard of the 'Hello World' program if you have read any programming book before. You need to have Xcode 13 installed in order to work on all exercises in this book. If you have skipped the first two chapters, please stop here and go back to read them.

Theory is nice but nothing replaces actual experience.īy now you should have installed Xcode and some understandings of Swift. Hello World! Build Your First App in Swift

Latest version of swift and xcode