Pitfalls of PhotoKit

関西モバイルアプリ研究会 #9 (kanmoba)

Transcript

1. Pitfalls of PhotoKit @griffin_stewie
2. Fenrir Inc. @griffin_stewie Bouldering: Level 5
3. PhotoKit
4. PhotoKit • From iOS 8 • Sophisticated • Thread safe
5. Simple Fetching
6. Assets Library • Enumerate groups and assets • Filter inside loop • Easy access raw data
7. PhotoKit • Call fetch methods • Like CoreData • Apply fetch options
8. Complicated Fetching
9. PHFetchOptions • dates • pixelWidth • pixelHeight • etc
10. PhotoKit • Access raw data ?
11. Darkside
12. Too slow
13. Fetching 5000 assets • Assets Library • Takes a few seconds • PhotoKit • Takes a few minutes
14. Reasons
15. XPC • Assets Library • Same process as app • PhotoKit • Separate process • Communicate using XPC
16. Thread safe • Assets Library • Developers should take care of it • PhotoKit • Framework cares
17. Let's use obediently