NSNotification.userInfoを Swiftyに扱おう

potatotips #27 (http://connpass.com/event/27156/) の発表資料です。https://github.com/takasek/Notifwift の紹介です。

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4. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) })
5. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) }) DMBTT
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6. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) }) "1*͔Β
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7. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) }) %JDUJPOBSZʹแΜͰ
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8. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) }) ͍ͦ͒
9. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) }) 7JFXͰ
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10. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) }) VTFS*OGP͔Β
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11. Α͋͘Δ࣮૷ // Model class User { … } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) }) SFMPBE VTFS
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16. class User { let id: Int let name: String init(id: Int, name: String) { self.id = id self.name = name } }
17. struct User { let id: Int let name: String }
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20. public class NSNotification : NSObject, NSCopying, NSCoding { … public var userInfo: [NSObject : AnyObject]? { get }  VTFS*OGP͸
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23. struct User { let id: Int let name: String } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": user]) } // error!! ˢ͜͜஫໨ʂ
24. struct User { let id: Int let name: String } class UserContainer { let user: User init(user: User) { self.user = user } } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": UserContainer(user: user)) } TUSVDU
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    Πέͯͳ͍ʜ class UserContainer { let user: User init(user: User) { self.user = user } }
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30. ͜Ε͕ʜ // Model struct User { … } class PayloadContainer { let payload: Any init(payload: Any) { self.payload = payload } } API.fetchUser(id: id) { (user: User) in NSNotificationCenter.defaultCenter() .postNotificationName( "DidUserReceivedNotification", object: nil, userInfo: ["user": PayloadContainer(payload: user)) } // View NSNotificationCenter.defaultCenter().addObserverForName( "DidUserReceivedNotification", object: nil, queue: NSOperationQueue.mainQueue(), usingBlock: { [weak self] (n: NSNotification) in guard let user = n.userInfo?["user"] as? User else { return } self?.reload(user) })
31. ͜͏ͳΓ·͢ // Model struct User { … } API.fetchUser(id: id) { (user: User) in Notifwift.post("DidUserReceivedNotification", payload: user) } // View let notifwift = Notifwift() // property notifwift.observe("DidUserReceivedNotification") { [weak self] (payload: User) in self?.reload(payload) } QBZMPBEʹ͍ͨ͠ΠϯελϯεΛɺ
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