iOSアプリでLine Heightを 設定するときに注意したいこと / Things to keep in mind when setting Line Height in your iOS app

[Online] potatotips #73 iOS/Android開発Tips共有会
https://potatotips.connpass.com/event/202810/

Transcript

1. iOSΞϓϦͰLine HeightΛ
 ઃఆ͢Δͱ͖ʹ஫ҙ͍ͨ͜͠ͱ גࣜձࣾϛΫγΟ ΈͯͶࣄۀ෦ ϩΫωϜ @_rockname
2. mixi, Inc. ࣗݾ঺հ ϩΫωϜ / rockname • ϛΫγΟͰʮՈ଒ΞϧόϜΈͯͶʯͱ͍͏ΞϓϦΛ
 ։ൃͯ͠Δ • iOSϝΠϯɺAndroid, RailsͳͲ΋ॻ͍ͯΔ • εϚϒϥ͕޷͖
3. mixi, Inc. iOSΞϓϦͰςΩετʹLine HeightΛઃఆ͍ͨ͠ • Line HeghitʹԿ΋ઃఆ͠ͳ͔ͬͨ৔߹
 ӈਤͷΑ͏ʹځ۶ͳҹ৅Λ༩͑ͯ͠·͏ • ߦؒʹద੾ͳεϖʔεΛ࣋ͨͤͯίϯςϯπΛ
 ಡΈ΍͘͢ද͍ࣔͨ͠
4. mixi, Inc. Line Heightͷఆٛ Line Height(Leading) = ֤ߦͷBaselineؒͷେ͖͞ https://material.io/design/typography/understanding-typography.html#type-properties
5. mixi, Inc. NSParagraphStyle > lineSpacing • iOSͰߦؒΛࢦఆ͍ͨ͠৔߹͸ͪ͜ΒΛ࢖͏ • lineSpacingΛઃఆͨ͠NSParagraphStyleΛ
 NSAttributedStringʹ௥Ճ͢Δ
6. mixi, Inc.
7. mixi, Inc. Line HeightΛઃఆ • fontSize: 25pt ʹରͯ͠ lineSpacing: 5pt Λઃఆ
 (Line Height͕30ʹͳΔ͜ͱΛظ଴)
8. mixi, Inc. ద੾ͳ஋͕ઃఆ͞Ε͍ͯΔ͔Λ֬ೝ • ظ଴஋ͷ30ptʹରͯ͠5ptେ͖͍Line Height • ૝ఆҎ্ͷεϖʔε͕ઃఆ͞Εͯ͠·͍ͬͯͨ
9. mixi, Inc. UIFont > lineHeight • UIFontʹ͸σϑΥϧτͰlineHeight͕ઃఆ͞Ε͍ͯΔ • ͜ͷ஋Λߟྀͯ͠NSAttributedStringʹlineSpacing
 Λઃఆ͢Δඞཁ͕͋ͬͨ
10. mixi, Inc. ద੾ͳ஋͕ઃఆ͞Ε͍ͯΔ͔Λ֬ೝ • UIFont.font.pointSizeͱUIFont.lineHeightͱ
 NSParagraphStyle.lineSpacing͸
 ӈਤͷΑ͏ͳؔ܎ • ͭ·ΓɺҎԼͷΑ͏ͳ͕ࣜ੒Γཱͭ
 lineSpacing = ૝ఆ͢Δߦؒ - (lineHeight - fontSize)
11. mixi, Inc.
12. mixi, Inc. ద੾ͳ஋͕ઃఆ͞Ε͍ͯΔ͔Λ֬ೝ • ૝ఆ௨Γ30ptͷLine HeightΛઃఆͰ͖͍ͯΔ
13. mixi, Inc. [Practice] Line HeightΛTypographyͱ࿈ಈ͢ΔΑ͏ఆٛ
14. mixi, Inc. [Practice] Line HeightΛTypographyͱ࿈ಈ͢ΔΑ͏ఆٛ
15. mixi, Inc. [Practice] Line HeightΛTypographyͱ࿈ಈ͢ΔΑ͏ఆٛ
16. Thank you!!!