cs193p-2020-swiftui

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Lecturer: Paul Hegarty

Lecture 1: Course Logistics and Intro to SwiftUI

Video

Slides

Lecture 2: MVVM and the Swift Type System

Video

• MVVM
• struct vs class
• Copy on write
• Generics
• Functions as Types

Slides

Reading 1

Assignment 1

Lecture 3: Reactive UI + Protocols + Layout

Video

• Protocols
• Protocols and Generics
• Layout
• GeometryReader

Slides

Lecture 4: Grid + enum + Optionals

Video

• @esacping
• enum
• Optional
• Equatable

Slides

Reading 2

Assignment 2

Lecture 5: ViewBuilder + Shape + ViewModifier

Video

• private(set)
• @ViewBuilder
• Shape
• ViewModifier

Slides

Lecture 6: Animation

Video

• Property Observer
• @State
• Implicit("automatic") Animation
• Explicit Animation
• Explicit Animation Demo
• Transitions
• AnimatableModifier

Slides

Reading 3

Assignment 3

Lecture 7: Multithreading EmojiArt

Video

• Multithreading
• Threads & Queues
• GCD
• fileprivate

Slides

Lecture 8: Gestures JSON

Video

• UserDefaults
• Gestures
• Discrete Gestures
• Non-Discrete Gestures
• User Defaults won't write to disk right away
• inout gesture state

Slides

Assignment 4

Assignment 5

Lecture 9: Data Flow

Video

• Property Wrappers
• @State
• @ObservedObject
• @Binding
• @EnvironmentObject
• @Environment
• @Publisher
• .sink{}/AnyCancellable
• .onReceive{}
• Publisher + URLSession(dataTaskPublisher)

Slides

Lecture 10: Modal Presentation and Navigation

Video

• Initialize @State var in initializer

• Share viewmodel via @EnviromentObject

• Form

• KeyPath

• Hashable/Equatable/Identifiable

• @EnvironmentObject

• List

• Inject EnvironmentObject

• Navigation Link

• Alert

• Swipe to Delete

• Edit Mode

• Set environment

• .zIndex()

Slides

Assignment 6

Lecture 11: Enroute Picker

Video

• Init a @Binding var(using _var)

• Init @State with wrappedValue

• Picker

• Picker in Form

• Picker and .tag()

• Toggle in Form

Slides

Lecture 12: Core Data

Video

• Core Data Features

• SwiftUI Integration

• Read/Write data

• @FetchRequest

• Build Objects Graph in Core Data

• Fetch/Create Object

• NSPredicate

• NSSortDescriptor

• Deal with NSSet of one to many relationship

• Deal with non-optional value

• @FetchRequest demo

• Init @FetchRequest

• TRUEPREDICATE

• Crash Error: Context in environment is not connected to a persistent store coordinator

• Build a programmatic NSPredicate

Slides

Lecture 13: Persistence

Video

• Persistence Overview
• Cloud Kit
• Create a record in Cloud Kit
• Query for records
• File System
• Sandbox
• File Manager

Slides

Lecture 14: UIKit Integration

Video

Slides