冴えない彼女（userInfo）の育て方

Transcript

1. ࡓ͑ͳ͍൴ঁͷҭͯํ
   userInfo
   for potatotips #39
   

   View Slide

2. override init() {
   super.init()
   emplyedBy = "MAGES. 5pb. Game div"
   job = "iOS Developer"
   twitter = "@lovee"
   github = "el-hoshino"
   additionalInfo =
   "Euro Truck Simulator 2 ROCKS!!!"
   class Speaker: Producer {
   }
   }
   

   View Slide

3. userInfo: Dictionary
   ▸ UIKit Ͱଟ͘ͷ৔ॴͰ׆༻͞ΕΔ
   ▸ Notification
   ▸ NSError
   ▸ ͦͷଞଟ͘ͷΦϒδΣΫτΛލ͙σʔλͷ΍ΓऔΓ
   ▸ ͦΕނͷສೳ͕͋͞Δ
   ▸ userInfo ͸୯ͳΔश׳্ͷม਺໊
   ▸ جຊ [String: Any] ͔ [Hashable: Any] ͷࣙॻܕ
   ▸ ౉͢σʔλ͸ܕʹറΒΕͳ͍
   

   View Slide

4. ͦΜͳ userInfo ͸ࡓ͑ͯͳ͍ʂ
   

   View Slide

5. ͦΜͳ userInfo ͸ࡓ͑ͯͳ͍ʂ
   ▸ Key ͷܕ͕ Stringʢ͔ AnyHashableʣ
   ▸ ଐੑ
   औΕΔ஋
   ͕ϒϨΔ
   ఆ · Β ͳ ͍
   ΜͩΑʂ
   ▸ Value ͷܕ͕ Any
   ▸ ʢຊདྷͷʣΩϟϥ
   ܕ ৘ ใ
   ͕ࢮΜͰΔΜͩΑʂ
   

   View Slide

6. ϢʔβϩάΠϯ௨஌Λߟ͑ͯΈΑ͏
   

   View Slide

7. ϢʔβϩάΠϯ௨஌ʢൃ৴ଆʣ
   let name = Notification
   .Name(rawValue: "PlayerLoggedin")
   let userInfo: [String: Any] = [
   "id": 3891,
   "nickname": "Ճ౻ܙ"
   ]
   let notification = Notification
   (name: name,
   object: nil,
   userInfo: userInfo)
   NotificationCenter.default.post(notification)
   

   View Slide

8. ϢʔβϩάΠϯ௨஌ʢൃ৴ଆʣ
   let name = Notification
   .Name(rawValue: "PlayerLoggedin")
   let userInfo: [String: Any] = [
   "id": 3891,
   "nickname": "Ճ౻ܙ"
   ]
   let notification = Notification
   (name: name,
   object: nil,
   userInfo: userInfo)
   NotificationCenter.default.post(notification)
   औΓಘΔΩʔ͕ར༻͢Δଆ͕Θ͔Βͳ͍
   ࣙॻ಺ͷܕ৘ใ͕ͳ͘ͳΔ
   

   View Slide

9. ϢʔβϩάΠϯ௨஌ʢड৴ଆʣ
   func didReceiveNotification(
   _ notification: Notification) {
   guard let userInfo = notification.userInfo else {
   return
   }
   if let id = userInfo["id"] as? Int,
   let name = userInfo["nickname"] as? String {
   print(id)
   print(name)
   } else if let token = userInfo["token"] as? String {
   print(token)
   }
   }
   

   View Slide

10. ϢʔβϩάΠϯ௨஌ʢड৴ଆʣ
    func didReceiveNotification(
    _ notification: Notification) {
    guard let userInfo = notification.userInfo else {
    return
    }
    if let id = userInfo["id"] as? Int,
    let name = userInfo["nickname"] as? String {
    print(id)
    print(name)
    } else if let token = userInfo["token"] as? String {
    print(token)
    }
    }
    ΩʔΛࣗྗͰ֮͑Δඞཁ͕͋Δ
    ಛఆͳܕʹΩϟετμ΢ϯ͢Δඞཁ͕͋Δ
    if จ͸໢ཏͰ͖Δอূ͕ͳ͍
    

    View Slide

11. Զ͕࡞ͬͨϓϩάϥϜ͔ͩΒ

    ͲΜͳ΋ͷ͕͋Δ͔͘Β͍

    Զ͸஌ͬͯΔ!
    

    View Slide

12. Զ͕࡞ͬͨϓϩάϥϜ͔ͩΒ

    ͲΜͳ΋ͷ͕͋Δ͔͘Β͍

    Զ͸஌ͬͯΔ!
    ͓લ 6 ϲ݄લͷՇͷ໊લΛ

    ࠓ͙͢શ෦ݴ͑Δ͔ʁ
    

    View Slide

13. View Slide

14. ྑ͍ઃܭ͸ޡͬͨ༻๏Λ
    ίϯύΠϧΤϥʔʹ͢Δ
    by ੴ઒ ༸ࢿ
    ʢגࣜձࣾϝϧΧϦʣ
    

    View Slide

15. userInfo Λϓϩσϡʔε͠Α͏
    վ ળ
    

    View Slide

16. ϢʔβϩάΠϯ௨஌ʢڞ௨ʣ
    extension Notification {
    enum Player {
    case normal(id: Int, nickname: String)
    case anonymous(token: String)
    }
    }
    extension Notification.Player {
    static let key = "Player"
    }
    

    View Slide

17. ϢʔβϩάΠϯ௨஌ʢൃ৴ଆʣ
    extension Notification {
    enum Player {
    case normal(id: Int, nickname: String)
    case anonymous(token: String)
    }
    }
    extension Notification.Player {
    static let key = "Player"
    }
    let player = Notification.Player
    .normal(id: 3891, nickname: "Ճ౻ܙ")
    let userInfo = [Notification.Player.key: player]
    ͲΜͳΩʔ͕͋Δͷ͔΋͙͢Θ͔Δ
    ม਺಺ͷܕ৘ใ͕࢒Δ
    

    View Slide

18. ϢʔβϩάΠϯ௨஌ʢड৴ଆʣ
    extension Notification {
    enum Player {
    case normal(id: Int, nickname: String)
    case anonymous(token: String)
    }
    }
    extension Notification.Player {
    static let key = "Player"
    }
    guard let player = notification
    .userInfo?[Notification.Player.key]
    as? Notification.Player else { return }
    switch player {
    case .normal(id: let id, nickname: let name):
    print(id)
    print(name)
    case .anonymous(token: let token):
    print(token)
    }
    ΩʔΛ֮͑Δඞཁ͕ͳ͍
    ܕΛΩϟετμ΢ϯ͢Δඞཁ͕ͳ͍
    switch case จʹΑΔ໢ཏੑͷอূ
    

    View Slide

19. ݁࿦
    userInfo Λ [String: Any] ͷ··Ͱར༻ͤͣ
    ͳΔ΂͘Ұͭͷఆ·ͬͨܕʹམͱ͠ࠐ΋͏
    enum Ͱ΋ struct Ͱ΋ Set Ͱ΋
    

    View Slide

20. ୭΋͕ΩϡϯΩϡϯ͢ΔϝΠϯώϩΠϯʹɻ
    Ұ ໨ ྎ વ u s e r I n f o
    

    View Slide