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CS193p - Developing Apps for iOS
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CS193p - Developing Apps for iOS

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Below you will find links to videos and supporting course material
for the first 6 lectures of the Spring 2025 version of Stanford's
CS193p (Developing Applications for iOS using SwiftUI).  It is a
course Stanford students take to learn some of the basics of iOS
development.  More lectures from the quarter will be posted soon.

The course happened before iOS 26 and Xcode 26 were released, but the
code written during the course seems to be mostly compatible.  The
big change in Xcode 26, of course, is built-in LLM assistance, and
iOS 26 introduced Liquid Glass in the UI, so of course there's none
of that in any of these videos.

Unfortunately, we aren't able to provide any support for you as you
watch these, but there are lots and lots of fantastic resources
online for helping you in your quest to learn how to develop apps for
iOS, so seek them out!

For more, check out the About page.

Xcode screenshot of "Hello World" application
Lecture 1

Getting Started with SwiftUI

Introduction to the course. The basics of Xcode and SwiftUI,
especially Views.

Watch Lecture

Reading Assignment 1

Xcode screenshot showing work on match markers in CodeBreaker
Lecture 2

More SwiftUI Basics

More SwiftUI basics, including View modifiers. Start construction on
this quarter's application: CodeBreaker.

Watch Lecture

Programming Assignment 1

Keynote slide about Model and UI and the Swift Type System
Lecture 3

Model and UI; Swift Type System

Understanding the separation of Model (logic and data) from UI.
 Introduction to some of the fundamentals of the Swift Type System.

Watch Lecture

Reading Assignment 2

Xcode screenshot of the code and #Preview of CodeBreaker in action
Lecture 4

Building CodeBreaker's Model

Build CodeBreaker's Model and hook the UI up to it. Along the way,
@State, Optionals, onTapGesture.  CodeBreaker is playable now!

Watch Lecture

Programming Assignment 2

Keynote slide about Data Flow
Lecture 5

Layout; Data Flow

How SwiftUI lays out UI elements on screen. Also a discussion of how
data flows through a SwiftUI application. Intro to functional
programming.

Watch Lecture

Xcode screenshot of guessing support in CodeBreaker
Lecture 6

Data Flow Demonstration

A demonstration of how data flows through our SwiftUI application
from the Model through one View and into another View.

Watch Lecture

Programming Assignment 3

CodeBreaker L6

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