React Nativeで作る色々なジェスチャー

LT on React Native Meetup #7

1. @saitoxu React NativeͰ࡞Δ ৭ʑͳδΣενϟʔ
2. ࣗݾ঺հ • @saitoxu ʢ͍͞ͱ͏ʣ • Co-Founder&CTO@Carat Inc. • 2ظ໨ʹೖͬͨ͹͔ΓͷελʔτΞο ϓ • React, React Native, Rails, Python… • ωΠςΟϒ͸झຯͰ͔͠ॻ͍ͨ͜ͱͳ ͍Ϛϯ
3. αʔϏε঺հ • ٻ৬ɾస৬ΞϓϦGLITʢάϦοτʣ • TinderϥΠΫͳUI͕ಛ௃ • https://glit.io • React Native੡ • ͕ͩݱࡏiOS൛ͷΈ.. • JSΤϯδχΞઈࢍืूͯ͠·͢..ʂ
4. ΞϓϦͰΑ͘࢖͏ δΣενϟʔ
5. 1. λοϓ 2. ௕ԡ͠ 3. μϒϧλοϓ 4. υϥοά 5. εϫΠϓ 6. ϐϯνΠϯˍϐϯνΞ΢τ
6. React NativeͰ Ͳ͏࡞Δ͔ʁ
7. 1. λοϓ • Touchable*ίϯϙʔωϯτΛ࢖༻
8. 2. ௕ԡ͠ • Touchable*ίϯϙʔωϯτͷonLongPressͱ͍͏props Λ࢖༻
9. 3. μϒϧλοϓ • Touchable*ͷonPressൃՐͷִ͕ؒx msҎ಺ͩͬͨΒμϒϧλοϓͱΈͳ͢
10. 3. μϒϧλοϓ • Touchable*ͷonPressൃՐͷִ͕ؒx msҎ಺ͩͬͨΒμϒϧλοϓͱΈͳ͢
11. 4. υϥοά • δΣενϟʔΛѻ͏PanResponderΛ࢖༻ • evt΍gestureStateΛհͯ͠Componentͷ࠲ඪ΍ҠಈྔͳͲ͕औಘͰ͖Δ
13. pan.x pan.y (1) ॳظԽ
14. offset x + 0 offset y + 0 (2) υϥοά։࢝࣌
15. offset x offset y dx dy (3) υϥοάத
16. pan.x pan.y (4) ཭ͨ͠ޙ
17. 5. εϫΠϓ • υϥοάͱ͋·ΓมΘΒͳ͍ • ᮢ஋ͷઃఆͱΞχϝʔγϣϯ͕ඞཁ υϥοάͯ͠ᮢ஋Λ௒͑Δ ΞχϝʔγϣϯͰඈΜͰ͘
18. dx threshold decay
19. 6. ϐϯνΠϯˍϐϯνΞ΢τ • gestureState.numberActiveTouches: ༗ޮͳ λονͷ਺ • evt.nativeEvent.touches: λονΠϕϯτͷΦ ϒδΣΫτɻλον͞Εͨ৔ॴͷ࠲ඪͳͲ͕ೖͬ ͍ͯΔ
20. distance
21. distance
22. ͓ΘΓʹ • جຊతͳδΣενϟʔͷ࣮૷Λ঺հ͠·ͨ͠ • ͜ΕΒͷδΣενϟʔ΍AnimationͳͲΛ͞Β ʹ૊Έ߹ΘͤɺωΠςΟϒͬΆ͍͍͍ײ͡ͷ UI/UXΛ࡞͍͖ͬͯ·͠ΐ͏
23. Thanks!!