Refactor CollectionView

[uhooi]

Overview

Use UICollectionViewCompositionalLayout and DiffableDataSource .

References

Overall

• https://developer.apple.com/documentation/uikit/views_and_controls/collection_views/implementing_modern_collection_views
• https://techlife.cookpad.com/entry/2020/12/24/130000

UICollectionViewCompositionalLayout

• https://developer.apple.com/documentation/uikit/uicollectionviewcompositionallayout
• https://developer.apple.com/documentation/uikit/nscollectionlayoutdimension
• https://developer.apple.com/documentation/uikit/nscollectionlayoutgroup/3199078-interitemspacing
• https://developer.apple.com/documentation/uikit/nscollectionlayoutspacing
• https://developer.apple.com/documentation/uikit/nscollectionlayoutsection/3199093-intergroupspacing
• https://qiita.com/hcrane/items/f16560ebf12b7a12588a
• https://commerce-engineer.rakuten.careers/entry/tech/0038
• https://speakerdeck.com/hcrane/iosdc2021-compositional-layoutsdeshi-xian-surushu-jie-he-nashi-zhuang

DiffableDataSource

• https://developer.apple.com/documentation/uikit/uicollectionviewdiffabledatasource
• https://developer.apple.com/documentation/uikit/nsdiffabledatasourcesnapshot
• https://zenn.dev/freddi/articles/484451ba078549

CellRegistration

• https://developer.apple.com/documentation/uikit/uicollectionview/cellregistration
• https://developer.apple.com/documentation/uikit/uicollectionview/cellregistration/3600939-init
• https://developer.apple.com/forums/thread/681739
• https://twitter.com/k_katsumi/status/1481275512538693644?s=20
• https://github.com/kishikawakatsumi/Doorlock/blob/e104482c8b6bb0a997b56eede1fc6be12ed3e81a/Doorlock/MainViewController.swift#L17

[github-actions[bot]]

👋 Thanks for reporting! Please PR :)