Swift: Advanced App Design With UIKit

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Hi, my name is Mark Nair, and in these lessons you'll learn about App Design using Swift. We'll review the UIKit and SwiftUI frameworks, including the basic structures for both. We'll spend some time with UIKit Auto Layout and Table Views, and then we'll look at SwiftUI text, images, stacks, buttons, and work with state and binding. To design and create an app, you'll need to think about the user interface and, generally, how people interact with the logic and data in your app. People have created most apps for iOS with UIKit. That stands for User Interface Kit. This is what the developer documentation says about UIKit. UIKit provides a variety of features for building apps, including components you can use to construct the core infrastructure of your iOS, iPadOS, or TVOS apps. The framework provides the window and view architecture for implementing your UI, the event handling infrastructure for delivering multi-touch and other types of input to your app, and the main run loop for managing interactions between the user, the system, and your app. UIKit is what we call an imperative framework, which means you have to be very specific about how you set up your elements of your interface. You do this with a tool called Interface Builder and with techniques using a thing called Storyboards. UIKit's been around for a while. The new framework that came out in 2019 is SwiftUI, and unlike UIKit's imperative nature, SwiftUI is declarative, which means you tell SwiftUI what you want your UI to look like, and SwiftUI will create it for you. According to the developer documentation, SwiftUI uses a declarative syntax that you can simply state what you want your user interface to do. For example, you can write that you want a list of items consisting of text fields and then describe alignment, font, and color for each field. Your code is simply easier to read than ever before, saving you time and maintenance. Okay, that sounds great. What we will do here is explore both frameworks in the following videos. Today, knowing UIKit is essential, especially if you're maintaining old projects or apps. SwiftUI is definitely the future of iOS development, though, and it's quite a bit of fun to use. So we'll look at both of them. Right now, we're in that in-between time, and there is no good answer about what should I learn, which is usually the question people ask, where should I focus my attention? So we'll look at UIKit to begin with, and then we'll move into SwiftUI. There is a lot of depth in these two frameworks, and a lot of things to talk about when we talk about interactions and how we build apps. For now, we'll scratch the surface, but there's plenty more to do later on. Thanks for watching. Stay tuned for the next lesson, where I'll show you the basic structure of a UIKit app.