WWDC 2020 Session Notes

Thank You 🎉

Last years WWDC Session Notes was so successful that I decided to continue this form of WWDC session summary. I would like to take the moment to thank all of you for contribution, feedback, support and reading my session notes 🙏

Intro

Usually it is much faster to read through some bullet points instead of watching a 50 min session video. Then if you find something interesting you can still watch it.

Sessions that are exceptionally mentionable are highlighted using a ★.

This is work in progress since it is a lot of effort to watch all the videos by myself. So either please be patient or just open up an issue to make a suggestion which session notes you like to see next :)

Contribution

Feel free to submit a PR if I got something wrong or you have a suggestion for improvement. Please also have a look in CONTRIBUTING.md if you want to contribute.

Thanks so much to EVERYBODY who contributed and improved the overall quality of the notes and those who added complete notes to the list.

Mentions

This repo has already been mentioned many times on Twitter and apart from this also in the following places:

• iOS Dev Weekly Issue 409
• iOS Goodies Issue 287
• Swift Developments Issue 189
• WWDCNotes

Interesting WWDC-Related Links

• Apple Developer Documentation by @Apple
• Xcode Release Notes
• iOS & iPadOS Release Notes

Table of Contents

1. (TO-DO) Expanding automation with the App Store Connect API
2. (TO-DO) What's new in assessment
3. Introducing Car Keys
4. (TO-DO) Optimize the Core Image pipeline for your video app
5. (TO-DO) Edit and play back HDR video with AVFoundation
6. (TO-DO) Export HDR media in your app with AVFoundation
7. (TO-DO) Author fragmented MPEG-4 content with AVAssetWriter
8. (TO-DO) Discover ray tracing with Metal
9. (TO-DO) Get to know Metal function pointers
10. (TO-DO) Core Data: Sundries and maxims
11. (TO-DO) App accessibility for Switch Control
12. (TO-DO) Make your app visually accessible
13. (TO-DO) Build Metal-based Core Image kernels with Xcode
14. (TO-DO) Create a seamless speech experience in your apps
15. Lists in UICollectionView
16. Modern cell configuration
17. Meet WidgetKit
18. (TO-DO) Stacks, Grids, and Outlines in SwiftUI
19. (TO-DO) Build SwiftUI views for widgets
20. (TO-DO) Widgets Code-along, part 1: The adventure begins
21. (TO-DO) Widgets Code-along, part 2: Alternate timelines
22. (TO-DO) Widgets Code-along, part 3: Advancing timelines
23. (TO-DO) App essentials in SwiftUI
24. (TO-DO) Build document-based apps in SwiftUI
25. Data Essentials in SwiftUI
26. What's new in SwiftUI
27. (TO-DO) Build SwiftUI apps for tvOS
28. (TO-DO) Build an Action Classifier with Create ML
29. (TO-DO) Advances in diffable data sources
30. (TO-DO) Create complications for Apple Watch
31. (TO-DO) Enable encrypted DNS
32. (TO-DO) Build complications in SwiftUI
33. (TO-DO) Keep your complications up to date
34. Build with iOS pickers, menus and actions
35. (TO-DO) Optimize the interface of your Mac Catalyst app
36. (TO-DO) Identify trends with the Power and Performance API
37. (TO-DO) Design high quality Siri media interactions
38. (TO-DO) Expand your SiriKit Media Intents to more platforms
39. (TO-DO) Background execution demystified
40. (TO-DO) What's new in SiriKit and Shortcuts
41. (TO-DO) Evaluate and optimize voice interaction for your app
42. (TO-DO) Empower your intents
43. (TO-DO) Decipher and deal with common Siri errors
44. (TO-DO) Diagnose performance issues with the Xcode Organizer
45. Eliminate animation hitches with XCTest
46. Why is my app getting killed?
47. (TO-DO) What's new in MetricKit
48. (TO-DO) Integrate your app with Wind Down
49. (TO-DO) Feature your actions in the Shortcuts app
50. Design for intelligence: Apps, evolved
51. (TO-DO) Design for intelligence: Make friends with "The System"
52. Design for intelligence: Discover new opportunities
53. (TO-DO) Discover Core Image debugging techniques
54. (TO-DO) Decode ProRes with AVFoundation and VideoToolbox
55. (TO-DO) Write tests to fail
56. (TO-DO) Build for the iPadOS pointer
57. (TO-DO) Handle trackpad and mouse input
58. (TO-DO) The Push Notifications primer
59. (TO-DO) Explore Packages and Projects with Xcode Playgrounds
60. Advances in UICollectionView
61. What's new in Universal Links
62. (TO-DO) Explore the Action & Vision app
63. Keynote ★
64. (TO-DO) Meet Watch Face Sharing
65. (TO-DO) Design great widgets
66. (TO-DO) Adopt the new look of macOS
67. (TO-DO) Build for iPad
68. (TO-DO) Meet Scribble for iPad
69. (TO-DO) What's new in PencilKit
70. (TO-DO) Support hardware keyboards in your app
71. (TO-DO) Support local network privacy in your app
72. (TO-DO) Boost performance and security with modern networking
73. (TO-DO) Build local push connectivity for restricted networks
74. (TO-DO) iPad and iPhone apps on Apple Silicon Macs
75. (TO-DO) AutoFill everywhere
76. (TO-DO) VoiceOver efficiency with custom rotors
77. (TO-DO) Accessibility design for Mac Catalyst
78. (TO-DO) Create app clips for other businesses
79. (TO-DO) Introduction to SwiftUI
80. Streamline your app clip
81. (TO-DO) Discover AppleSeed for IT and Managed Software Updates
82. (TO-DO) Leverage enterprise identity and authentication
83. (TO-DO) Build location-aware enterprise apps
84. (TO-DO) Build scalable enterprise app suites
85. (TO-DO) What's new in Mac Catalyst
86. (TO-DO) [Design for Game Cen