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Core NFC の新機能 / What's new in Core NFC (WWDC20)
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treastrain / Tanaka Ryoga
July 09, 2020
Programming
2
680
Core NFC の新機能 / What's new in Core NFC (WWDC20)
集まれSwift好き!Swift愛好会スピンオフ WWDC20セッション要約会 @ Online で発表した LT「Core NFC の新機能」です。
treastrain / Tanaka Ryoga
July 09, 2020
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Transcript
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J04"QQ
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ֶੜূɹɹࣾһূ w σʔλͷަ "OESPJE#FBN "OESPJE*$4d1JF
$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE J1IPOFͰ/'$Λ͏ $PSF/'$
$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE "QQ$MJQTͰ$PSF/'$Θͳ͍ J04Ͱ͑ΔίϯύΫτͳ"QQ w "QQ$MJQTΛ։͘ w /'$ w 23ίʔυ w
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w *40λά͚ͷϝιουΛՃ *40BEEJUJPOT
$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE $PSF/'$ʹؔ͢Δ৽ػೳ 8IBUTOFXJO$PSF/'$ XXED w $PSF/'$ͷ֓ཁ 0WFSWJFX w 4XJGUͰͷߏจͷมߋ 4ZOUBYDIBOHFT
w *40λά͚ͷϝιουΛՃ *40BEEJUJPOT
$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE 3FTVMUΛͬͨ4XJGUߏจ .PEFSO4XJGUTZOUBYXJUI3FTVMU w J04ҎલͷNFCFeliCaTagͷྫ &YBNQMFPGNFCFeliCaTagCFGPSFJ04 detectedFeliCaTag.readWithoutEncryption( serviceCodeList: serviceCodeList,
blockList: blockList) { ( statusFlag1: Int, statusFlag2: Int, blockData: [Data], error: Error?) in if let error = error { // Handle error. return } // Handle status flag 1, status flag 2 and block data }
$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE 3FTVMUΛͬͨ4XJGUߏจ .PEFSO4XJGUTZOUBYXJUI3FTVMU w J04Ҏ߱ͷNFCFeliCaTagͷྫ &YBNQMFPGNFCFeliCaTagBGUFSJ04 detectedFeliCaTag.readWithoutEncryption( serviceCodeList: serviceCodeList,
blockList: blockList) { ( response: Result<(NFCFeliCaStatusFlag, [Data]), Error>) in switch response { case .success((let statusFlag, let blockData)): // Handle NFCFeliCaStatusFlag object and block data case .failure(let error): // Handle Error object. } }
$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE detectedFeliCaTag.readWithoutEncryption( serviceCodeList: serviceCodeList, blockList: blockList) { ( statusFlag1: Int,
statusFlag2: Int, blockData: [Data], error: Error?) in if let error = error { session.invalidate(errorMessage: error.localizedDescription) } guard statusFlag1 == 0x00, statusFlag2 == 0x00 else { session.invalidate( errorMessage: "εςʔλεϑϥά͕ΤϥʔΛ͍ࣔͯ͠·͢ɻ\(statusFlag1), \(statusFlag2)") return } let data = blockData.first! let balance = Int(data[11]) + Int(data[12]) << 8 session.alertMessage = "ߴ: ¥\(balance)" session.invalidate() } ަ௨ܥ*$ΧʔυͷߴΛಡΈऔΔ J04Ҏલͷ߹ɹcompletionHandler
$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE detectedFeliCaTag.readWithoutEncryption( serviceCodeList: serviceCodeList, blockList: blockList) { ( response: Result<(NFCFeliCaStatusFlag,
[Data]), Error>) in switch response { case .success((let statusFlag, let blockData)): guard statusFlag.statusFlag1 == 0x00, statusFlag.statusFlag2 == 0x00 else { session.invalidate(errorMessage: "εςʔλεϑϥά͕ΤϥʔΛ͍ࣔͯ͠·͢ɻ\(statusFlag)") return } let data = blockData.first! let balance = Int(data[11]) + Int(data[12]) << 8 session.alertMessage = "ߴ: ¥\(balance)" session.invalidate() case .failure(let error): session.invalidate(errorMessage: error.localizedDescription) } } ަ௨ܥ*$ΧʔυͷߴΛಡΈऔΔ J04Ҏલͷ߹ɹresultHandler
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w J04Ͱ4XJGUͰͷߏจมߋͱ*40λά͚ͷػೳՃ *40*&$ʹରԠ ਤॻؗͷຊͷλάͳͲ
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$PQZSJHIUUSFBTUSBJO5BOBLB3ZPHBɹ"MMSJHIUTSFTFSWFE ࢀߟใ ͋Γ͕ͱ͏͍͟͝·ͨ͠ w ຊεϥΠυ4QFBLFS%FDLʹͯӾཡͰ͖·͢ IUUQTTQFBLFSEFDLDPNUSFBTUSBJO w ຊεϥΠυͰͷαϯϓϧίʔυΛ(JU)VC(JTUͰެ։͍ͯ͠·͢ IUUQTHJTUHJUIVCDPNUSFBTUSBJOGFDFGBCFFD w
88%$7JEFPT w $PSF/'$&OIBODFNFOUT88%$ IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED w 8IBUTOFXJO$PSF/'$88%$ IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED