Collection Views: Diffable Data Sources and Compositional Layout | Workshop @SwiftIsland 2019

Transcript

1. Collection Views Diffable Data Source + Compositional Layout Marina Gornostaeva @hybridcattt Swift Island 2019 !1
2. Collection Views Part 1. Diffable Data Sources • Basics • Dynamic data Part 2. Compositional Layout • Basics • Per-section layout • Advanced layouts
3. Diffable Data Source • Generic • Source of truth • performBatchUpdates - gone • Free diffing and animations
4. Compositional layout • Declarative • Forget index paths, think in patterns • Composable, fast • Fractional and estimated sizes
5. NSCollectionLayout… • Size • Item • Group • Section
6. Known bugs in Xcode 11b3 • Orthogonal layout • crazy artefacts for added/removed sections • incorrect content size w/ group insets • incorrect item width w/ item spacing • large title not always showing at first
7. Next steps • Layout-margin based alignment • Environment-specific layout • Supplementary views (badges, headers) • Your own idea!
8. Next steps • Estimated sizes • Layout-margin based alignment • Environment-specific layout • Supplementary views (badges, headers) • Your own idea! • Check out the repo with implementations for these ^ and all the steps from the workshop!
 https://github.com/hybridcattt/IslandGuideSample
9. Thank you