Swift InstagramViewer - Speaker Deck

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7BSJBCMFT$POTUBOUT 6TFAMFUAGPSDPOTUBOUTBOEAWBSAGPSWBSJBCMFTJO4XJGU var str1 = "Hello" // Variable str1 = "Test" let str2 = "World" // Constant str2 = "Test" // Compile error var arr1: [Int] = [] // Mutable array arr1.append(1) let arr2: [Int] = [] // Immutable array arr2.append(1) // Compile error

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0QUJPOBM 5PJOEJDBUFJUNJHIUCFAOJMA 6TFA0QUJPOBM5AUPEFDMBSFBWBSJBCMF NFUIPEBTPQUJPOBM var str3: Optional = nil var str4: String? = nil // Syntax Sugar

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0QUJPOBM A0QUJPOBM5AJTLJOEPGAFOVNA enum Optional : Reflectable, NilLiteralConvertible { case None case Some(T) /// Construct a `nil` instance. init() /// Construct a non-\ `nil` instance that stores `some`. init(_ some: T) 4P JUJTBCMFUPFYQSFTTUIFN var str5: Optional = Optional() // nil var str6: Optional = Optional("Hello") // {Some "Hello"}

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0QUJPOBM 6TFAANBSLBGUFSBOPQUJPOBMWBMVFUPGPSDFUIFVOXSBQQJOHPGJUTWBMVF var str6: Optional = Optional("Hello") var str7: String = str6 // Compile error var str8: String = str6! // "Hello" "OPQUJPOBMWBMVFGBJMTXIFOUIFPQUJPOBMJTAOJMA var str5: Optional = Optional() var str9: String = str5! // Runtime error

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4XJUDI let country: String = "Canada" switch country { case "USA": println("USA") case "Canada": println("Canada") case "Japan": fallthrough default: println("Other") }

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5VQMF var p: (x: Float, y: Float) = (1.0, 2.0) println("x: \(p.0), y: \(p.1)") println("x: \(p.x), y: \(p.y)")

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5VQMFXJUI4XJUDI var p: (x: Float, y: Float) = (1.0, 2.0) println("x: \(p.0), y: \(p.1)") println("x: \(p.x), y: \(p.y)") switch p { case (0, 0): println("Point is on origin.") case (_, 0): println("Point is on X-axes.") case (0, _): println("Point is on Y-axes.") case (-2...2, -2...2): println("Point is inside the box") default: println("Point is outside the box") }

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'VODUJPO 6TFAGVODALFZXPSEUPEFDMBSF func myPow(x: Int, e: Int) -> Int { var d = 1 for _ in 1...e { d *= x } return d } myPow(3, 4) ``` func [Name](arg1: Type1,..) -> [Return Type] { // Procedure } ```

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1SPUPDPM protocol AProtocol { func behaviour() -> Void } @objc protocol SomeProtocol { func behaviour() -> Void optional func optBehaviour() -> Void } class Foo: NSObject, AProtocol { func behaviour() { } }

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ΞϓϦϞοΫ

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։ൃ४උ *OTUBHSBN"1*ʹ͍ͭͯ ϑϨʔϜϫʔΫϥΠϒϥϦͷಋೖ

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*OTUBHSBN"1*ʹ͍ͭͯ

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*OTUBHSBN"1*ʹ͍ͭͯ ࠓճ࢖༻͢ΔΤϯυϙΠϯτ IUUQTBQJJOTUBHSBNDPNWNFEJBQPQVMBS DMJFOU@JE$-*&/5*% $-*&/5*%ͷൃߦ*OTUBHSBN΁$MJFOUొ࿥ IUUQJOTUBHSBNDPNEFWFMPQFSDMJFOUTSFHJTUFS ˞஫࣌ؒʹ͖ͭϦΫΤετ ৄࡉɿ*OTUBHSBN"1*&OEQPJOUT IUUQJOTUBHSBNDPNEFWFMPQFSFOEQPJOUT

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*OTUBHSBN"1*ʹ͍ͭͯ ࠓճ࢖༻͢ΔΤϯυϙΠϯτ IUUQTBQJJOTUBHSBNDPNWNFEJBQPQVMBS DMJFOU@JE$-*&/5*% ਓؾͷϝσΟΞʢࣸਅಈըʣσʔλ͕ฦ٫͞ΕΔ ը૾ʹ͍ͭͯͷ৘ใऔಘ͸ԼهͷΑ͏ʹߦ͑Δ responseJSON["data"][i]["images"]["standard_resolution"] /* { "url": "http://s.cdninstagram.com/hphotos-xap1/a.jpg", "width": 640, "height": 640 } */

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ϑϨʔϜϫʔΫϥΠϒϥϦͷಋೖ "MBNPpSF 4XJGUZ+40/ (PPHMF"OBMZUJDT

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ϑϨʔϜϫʔΫͷಋೖ ࠓճ࢖༻͢ΔϑϨʔϜϫʔΫ "MBNPpSF IUUQTHJUIVCDPN"MBNPpSF"MBNPpSF ωοτϫʔΫ௨৴Λखܰʹ͢Δ 4XJGUZ+40/ IUUQTHJUIVCDPN4XJGUZ+40/4XJGUZ+40/ +40/σʔλΛߏ଄ମͰѻ͑Δ ͜ͷ̎ͭΛμ΢ϯϩʔυ͔(JU4VCNPEVMFͰϓϩδΣΫτϑΥϧμ΁ ˞ࠓճɺϥΠϒϥϦ؅ཧπʔϧ͸࢖༻͠·ͤΜ

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ϓϩδΣΫτ΁௥Ճ ϑϨʔϜϫʔΫͷϓϩδΣΫτΛ ࡞੒͍ͯ͠ΔϓϩδΣΫτ΁௥Ճ

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λʔήοτ΁௥Ճ λʔήοτʹϑϨʔϜϫʔΫΛ௥ Ճ ˠλʔήοτબ୒ ˠ(FOFSBMબ୒ ˠ&NCFEEFE#JOBSJFTͷʮʴʯ ˠ௥Ճ͍ͨ͠ϑϨʔϜϫʔΫબ୒ ࠷ۙͷ9DPEFͳΒ͜͜΁௥Ճ͢Δ ͱ#VJME1IBTFT΁ద੾ʹઃఆ͞ΕΔ

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ϥΠϒϥϦͷಋೖ ࠓճ࢖༻͢ΔϥΠϒϥϦʢ/POϑϨʔϜϫʔΫܗࣜʣ (PPHMF"OBMZUJDT IUUQTEFWFMPQFSTHPPHMFDPNBOBMZUJDTEFWHVJEFTDPMMFDUJPOJPT W $PDPB1PETΛ࢖ͬͯಋೖ͠·͢ HFN͔ΒDPDPBQPETΛΠϯετʔϧʢ࠷৽͸ʣ

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$PDPB1PET1PEpMF $PDPB1PETͷ؅ཧϑΝΠϧ1PEpMFΛ࡞੒͢Δ source 'https://github.com/CocoaPods/Specs.git' platform :ios, '8.0' inhibit_all_warnings! xcodeproj 'InstagramViewer' link_with 'InstagramViewer' pod 'GoogleAnalytics-iOS-SDK', '3.0.9'

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QPEJOTUBMMYDXPSLTQBDF λʔϛφϧ্ͰAQPEJOTUBMMAΛߦ͍ϥΠϒϥϦΛऔಘ͢Δ pod install AQPEJOTUBMMAޙ͔Β͸YDXPSLTQBDFϑΝΠϧΛ։͘ $PDPB1PETଆͰ1PETϓϩδΣΫτ͕࡞੒͞ΕΔͨΊa YDPEFQSPKϓϩδΣΫτ୯ମΛ؅ཧ YDXPSLTQBDFYDPEFQSPKϓϩδΣΫτΛෳ਺؅ཧ

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ϒϦοδϯάϔομʔ 4XJGUͰ0CKFDUJWF$ΫϥεΛ࢖༻͢Δʹ͸ϒϦοδϯά͕ඞཁ ϒϦοδϯάϔομʔϑΝΠϧΛఆٛ͢Δ #ifndef InstagramViewer_Objective_C_Bridging_Header #define InstagramViewer_Objective_C_Bridging_Header #import #import #import #import #endif /* InstagramViewer_Objective_C_Bridging_Header */ ˞ࢀߟɿIUUQRJJUBDPNLBOFTIJOUIJUFNTGDEFFB

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ϒϦοδϯάϔομʔ

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࣮૷ ࣮૷ύλʔϯ 4UPSZCPBSE *OTUBHSBN"1*ˠσʔλˠ5BCMF7JFX (PPHMF"OBMZUJDT

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࣮૷ύλʔϯ

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࣮૷ύλʔϯʢҰྫʣ ├── InstagramViewer │ ├── AppDelegate.swift │ ├── Application │ │ ├── Controllers // ViewController │ │ │ ├── DetailViewController.swift │ │ │ └── MediaListController.swift │ │ ├── Models // Logic layer │ │ │ └── MediaModel.swift │ │ ├── Requests // API Request │ │ │ └── MediaRequest.swift │ │ ├── Utilities // Utility │ │ │ └── AnalyticsUtils.swift │ │ └── Views // View, Cell │ │ └── MediaListCell.swift │ └── Objective-C-Bridging-Header.h

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࣮૷ύλʔϯ ࣮૷ύλʔϯʢάϧʔϓߏ੒ʣ ΞϓϦέʔγϣϯͷن໛ ࢖༻͢ΔσβΠϯύλʔϯ 0CTFSWFS1BUUFSO 3FBDUJWF1BUUFSO .77. ʜ

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%FUBJM7JFX$POUSPMMFS 6*7JFX$POUSPMMFS 6**NBHF7JFXΛઃஔ

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*OTUBHSBN"1*ˠσʔλ

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*OTUBHSBN"1*ˠσʔλ σʔλऔಘͷྲྀΕ "MBNPpSF3FRVFTUΫϥεΛ࢖༻ͯ͠*OTUBHSBN"1*΁ϦΫΤετ ˠ.FEJB3FRVFTUΫϥε ϨεϙϯεͷσʔλΛ4XJGU+40/+40/ߏ଄ମ΁ ˠ.FEJB3FRVFTUΫϥε .FEJBߏ଄ମʹඞཁͳ৘ใΛ+40/ߏ଄ମ͔Βऔಘ ˠ.FEJB.PEFMΫϥε

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*OTUBHSBN"1*ͱͷ࿈ܞ JSON Media Media Media Instagram API App Swifty JSON Swifty JSON Alamofire

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.FEJB3FRVFTUΫϥε "MBNPpSF3FRVFTUΫϥεΛ࢖༻ͯ͠*OTUBHSBN"1*΁ϦΫΤετ ˠSFRVFTUϝιου͕༻ҙ͞Ε͍ͯΔͷͰɺͦΕΛ࢖༻͢Δ let urlString = "https://api.instagram.com/v1/media/popular" let param = ["client_id": "<#CLIENT-ID#>"] let req = request(.GET, urlString, parameters: param)

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.FEJB3FRVFTUΫϥε Instagram API App JSON Media Media Media Swifty JSON Swifty JSON Alamofire

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.FEJB3FRVFTUΫϥε ϨεϙϯεͷσʔλΛ4XJGU+40/+40/ߏ଄ମ΁ ˠ3FRVFTUͷ֦ுʹSFTQPOTFϝιου͕͋ΔͷͰ͜ΕΛ࢖༻͢Δ let urlString = "https://api.instagram.com/v1/media/popular" let param = ["client_id": "<#CLIENT-ID#>"] let req = request(.GET, urlString, parameters: param) req.response { (request, response, responseData, error) -> Void in if error == nil { if let data = responseData as? NSData { let json = JSON(data: data) // …… } } } SwiftyJSON.JSON

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.FEJB.PEFMΫϥε Media Media Media Swifty JSON Instagram API App JSON Swifty JSON Alamofire

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.FEJB.PEFMΫϥε .FEJBߏ଄ମʹඞཁͳ৘ใΛ+40/ߏ଄ମ͔Βऔಘ ˠ·ͣɺ.FEJBߏ଄ମΛ࡞੒ struct Caption { var username: String? var text: String? } struct Media { var thumbnailURL: NSURL? var imageURL: NSURL? var caption: Caption? }

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.FEJB.PEFMΫϥε Media Media Media Instagram API App Swifty JSON JSON Swifty JSON Alamofire

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.FEJB3FRVFTUΫϥε .FEJBߏ଄ମʹඞཁͳ৘ใΛ+40/ߏ଄ମ͔Βऔಘ ˠ+40/ߏ଄ମ͔Β.FEJBߏ଄ମ΁ let json = JSON(data: data) if let array = json["data"].array { array.map({ (elm: JSON) -> Void in var caption = Caption( username: elm["caption"]["from"]["username"].string, text: elm["caption"]["text"].string) var media = Media( thumbnailURL: elm["images"]["thumbnail"]["url"].URL, imageURL: elm["images"]["standard_resolution"]["url"].URL, caption: caption) self.mediaList.append(media) }) }

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4XJGUZ+40/Λ ࢖Θͳ͍৔߹

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*OTUBHSBN͔Β৘ใΛऔಘ req.responseJSON { (request, response, jsonData, error) -> Void in if error == nil { if let json = jsonData as? NSDictionary { self.mediaList = [] if let array = json["data"] as? NSArray { for d in array { if let dict = d as? NSDictionary { var caption = Caption( username: ((dict["caption"] as? NSDictionary)?["from"] as? NSDictionary)?["username"] as? NSString, text: (dict["caption"] as? NSDictionary)?["text"] as NSString ) var media = Media( thumbnailURL: NSURL(string: ((dict["images"] as? NSDictionary)? ["thumbnail"] as? NSDictionary)?["url"] as NSString)!, imageURL: NSURL(string: ((dict["images"] as? NSDictionary)? ["standard_resolution"] as? NSDictionary)?["url"] as NSString)!, caption: caption ) }}}}}}

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%PXODBTUΛ ଟ༻͢Δඞཁ͕͋Δ GPPBT 5ZQF

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σʔλˠ6*5BCMF7JFX

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6*5BCMF7JFX%BUB4PVSDF Լه͸ඞ࣮ͣ૷͢Δඞཁ͕͋Δ func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell

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6*5BCMF7JFXηϧͷ਺ .FEJB.PEFM͕อ͍࣋ͯ͠Δ഑ྻͷத਎ͷ਺ override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return MediaModel.sharedInstance.mediaList.count }

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6*5BCMF7JFXηϧͷߴ͞ Մมͷͱ͖Λߟ͑ͯɺ.FEJB-JTU$FMMΫϥε͔Βηϧͷߴ͞Λऔಘ͢Δ override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat { let media = MediaModel.sharedInstance.mediaList[indexPath.row] return MediaListCell.heightForRow(media) } // === // MediaListCell.swift内部 class func heightForRow(media: Media) -> CGFloat { return 100.0 }

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6*5BCMF7JFXηϧͷத਎ ૄʹ͢ΔͨΊɺ.FEJB-JTU$FMMͷΠϯελϯε΁NFEJBΛ౉͢ override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as MediaListCell let media = MediaModel.sharedInstance.mediaList[indexPath.row] return cell.configure(media) }

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.FEJB-JTU$FMMDPOpHVSF ը૾σʔλ͸ඇಉظͷผεϨουͰऔಘ͢Δ औಘ׬ྃͨ͠ΒɺಉظͰϝΠϯεϨουʹ໭Δ func configure(media: Media) -> MediaListCell { self.textLabel?.text = media.caption?.text dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), { let data = NSData(contentsOfURL: media.thumbnailURL!) dispatch_sync(dispatch_get_main_queue(), { self.imageView!.image = UIImage(data: data!, scale: UIScreen.mainScreen().scale) self.setNeedsLayout() }) }) return self }

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(PPHMF"OBMZUJDT

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(PPHMF"OBMZUJDTͷॳظԽ ॳظԽ͸("*Πϯελϯε͔ΒA("*5SBDLFSAΛऔಘ͢Δ var tracker: GAITracker? class func setupGoogleAnalytics() { GAI.sharedInstance().trackUncaughtExceptions = true; GAI.sharedInstance().dispatchInterval = 20 GAI.sharedInstance().logger.logLevel = .Verbose AnalyticsUtils.sharedInstance.tracker = GAI.sharedInstance().trackerWithTrackingId("UA-XXXXXXXX-X") }

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(PPHMF"OBMZUJDT΁ૹ৴ (PPHMF"OBMZUJDT΁৘ใΛૹ৴ A("*5SBDLFSAͷATFOEAϝιου class func trackView(screenName: String) { if let tracker = AnalyticsUtils.sharedInstance.tracker { let build = GAIDictionaryBuilder.createAppView() .set(screenName, forKey: kGAIScreenName).build() AnalyticsUtils.sharedInstance.tracker?.send(build) } }

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7JFX8JMM"QQFBSͰτϥοΩϯά ࡞ͬͨAUSBDL7JFXAϝιουΛඞཁͳͱ͖ʹ࢖༻͢Δ override func viewWillAppear(animated: Bool) { super.viewWillAppear(animated) let screenName = reflect(self).summary AnalyticsUtils.trackView(screenName) }