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iOSDC 2021 Restore
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coe
September 19, 2021
Technology
6
2k
iOSDC 2021 Restore
iOSDC 2021 バックグラウンドでアプリがキルされても怖くない!アプリの状態を元に戻すリストア機能の全て
coe
September 19, 2021
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Transcript
όοΫάϥϯυͰΞϓϦ͕Ωϧ͞Εͯ ා͘ͳ͍ʂ ΞϓϦͷঢ়ଶΛݩʹ͢ϦετΞػೳͷશͯ J04%$5TVZPTIJIZVHB
όοΫάϥϯυͰΞϓϦ͕Ω ϧ͞Εͯා͘ͳ͍
όοΫάϥϯυͰΞϓϦ͕Ωϧ͞Εͯා͘ͳ͍ w J04%$ w ৄղ4UPSZCPBSEͰগ͠ղઆ
.PSF*OGPSNBUJPO IUUQTXXXZPVUVCFDPNXBUDI WV'I6DIC0@TUT ৄղ4UPSZCPBSE
όοΫάϥϯυͰΞϓϦ͕Ω ϧ͞Εͯා͘ͳ͍
"QQ" -BVODI4DSFFO ΞϓϦ"Λىಈ
ΞϓϦ"Λར༻த
ΞϓϦ"Ͱɺ͍͍͘͢͝໘·ͰਐΜͰ͍Δ
ΞϓϦ# ΞϓϦ#͔Β௨
ΞϓϦ#ʹભҠͯ͠ɺ৭ʑΔ "QQ#
ΞϓϦ"ʹΔ "QQ" -BVODI4DSFFO
ΞϓϦ"࠷ॳ͔Βʹͳ͍ͬͯΔ
ΞϓϦར༻ΛΊΔ
ΞϓϦ͕ऴྃͨ࣌͠ͷରࡦ
ͦΕɺ4UPSZCPBSEͰ ରࡦͰ͖·͢Α
3FTUPSBUJPO
3FTUPSBUJPO w 6*"QQMJDBUJPO%FMFHBUFͰঢ়ଶͷอଘͱ෮ݩΛ༗ޮʹ͢Δ w ෮ݩ͍ͨ͠7JFX$POUSPMMFSʹରͯ͠3FTUPSBUJPO*%Λઃఆ͢Δ
6*"QQMJDBUJPO%FMFHBUFͰ ঢ়ଶͷอଘͱ෮ݩΛ༗ޮʹ͢Δ
ঢ়ଶͷอଘͱ෮ݩΛ༗ޮʹ͢Δ w 6*"QQMJDBUJPO%FMFHBUFͷ3FTUPSFܥϝιουΛUSVFʹ͢Δ w BQQMJDBUJPO @TIPVME4BWF4FDVSF"QQMJDBUJPO4UBUF w BQQMJDBUJPO @TIPVME3FTUPSF4FDVSF"QQMJDBUJPO4UBUF
w BQQMJDBUJPO @TIPVME4BWF"QQMJDBUJPO4UBUF w BQQMJDBUJPO @TIPVME3FTUPSF"QQMJDBUJPO4UBUF
extension AppDelegate { func application(_ application: UIApplication, shouldSaveApplicationState coder: NSCoder)
-> Bool { return true } func application(_ application: UIApplication, shouldRestoreApplicationState coder: NSCoder) -> Bool { return true } @available(iOS 13.2, *) func application(_ application: UIApplication, shouldSaveSecureApplicationState coder: NSCoder) -> Bool { return true } @available(iOS 13.2, *) func application(_ application: UIApplication, shouldRestoreSecureApplicationState coder: NSCoder) -> Bool { return true } }
෮ݩ͍ͨ͠7JFX$POUSPMMFSʹରͯ͠ 3FTUPSBUJPO*%Λઃఆ͢Δ
3FTUPSBUJPO*%ͷઃఆ ෮ݩ͍ͨ͠ରͷ7JFX$POUSPMMFSશͯʹϢχʔΫͳ3FTUPSBUJPO*%ΛׂΓͯΔ
ϦετΞͷςετ
ϦετΞͷςετ తͷը໘·ͰભҠ͢Δ ྫͱͯ͠.PEBMભҠΛߦ͏ ʢ/BWJHBUJPOભҠͰՄʣ
ϦετΞͷςετ ҰϗʔϜը໘ʹΔ
ϦετΞͷςετ 9DPEF͔Β3VOΛߦ͏
ϦετΞͷςετ ௨ৗͰ͋Εॳظը໘͔Β࢝· Δͱ͜Ζɺઌఔͷଓ͖ͷϞʔμ ϧը໘͔ΒΞϓϦ͕࢝·Δ
͔͠͠
໊લڧ
ॴଐגࣜձࣾ"NB[JB
w #-&ͰJ04"OESPJEؒͰͦͦ͜͜ େ͖ͳαΠζͷσʔλ௨৴Λ࣮ݱ͢Δ -$"1͋ΔΑ w ͋ͳͨͷΒͳ͍࿈བྷઌͷੈք w ৄղ4UPSZCPBSE
झຯύϯ८Γ
ϦετΞͷςετ ϗʔϜը໘ʹͬͨޙɺ࠶9DPEF3VO
ը໘ભҠอͨΕ͍ͯΔ͕ɺೖ ྗͨ͠σʔλ͕ফ͍͑ͯΔ
/4$PEFS
7JFX$POUSPMMFSͷσʔλ෮ݩͷΈ w ϦετΞͰ෮ݩ͞ΕΔͷ4UPSZCPBSE্ʹઃఆͯ͋͠ΔσʔλͷΈ w ͭ·Γɺ4UPSZCPBSEͷσʔλҎ֎͍࣋ͬͯͳ͍ͷͰɺޙ͔Βೖྗ ͨ͠ςΩετσʔλ͍࣋ͬͯͳ͍ w 4UPSZCPBSEҎ֎ͷσʔλΛ࣋ͨͤΔ͜ͱ͕ඞཁ w ͦͷσʔλͷอ࣋ઌ͕/4$PEFS
$PEFSͷσʔλՃ w 6*7JFX$POUSPMMFSFODPEF3FTUPSBCMF4UBUF w ϗʔϜը໘ʹભҠ͢Δͱ͖ͳͲʹݺΕΔ w $PEFSʹର͠ɺ֤छFODPEF ͰύϥϝʔλΛอଘ͓ͯ͘͠ w 6*7JFX$POUSPMMFSEFDPEF3FTUPSBCMF4UBUF
w ֤छEFDPEF ͰɺFODPEF3FTUPSBCMF4UBUFͰอଘ͓͍ͯͨ͠σʔλΛ औಘ͢Δ
$PEFSͷσʔλՃɺ෮ݩ class HobbyViewController: UIViewController { @IBOutlet weak var textField: UITextField!
override func encodeRestorableState(with coder: NSCoder) { super.encodeRestorableState(with: coder) coder.encode(textField.text, forKey: "textFieldText") } override func decodeRestorableState(with coder: NSCoder) { super.decodeRestorableState(with: coder) textField.text = coder.decodeObject(forKey: "textFieldText") as? String } }
࠶֬ೝ
໊લڧ
ॴଐגࣜձࣾ"NB[JB
w #-&ͰJ04"OESPJEؒͰͦͦ͜͜ େ͖ͳαΠζͷσʔλ௨৴Λ࣮ݱ͢Δ -$"1͋ΔΑ w ͋ͳͨͷΒͳ͍࿈བྷઌͷੈք w ৄղ4UPSZCPBSE
झຯύϯ८Γ
ϦετΞͷςετ ϗʔϜը໘ʹͬͨޙɺ࠶9DPEF3VO
w #-&ͰJ04"OESPJEؒͰͦͦ͜͜ େ͖ͳαΠζͷσʔλ௨৴Λ࣮ݱ͢Δ -$"1͋ΔΑ w ͋ͳͨͷΒͳ͍࿈བྷઌͷੈք w ৄղ4UPSZCPBSE
·ͱΊ w 6*"QQMJDBUJPO%FMFHBUFͰঢ়ଶͷอଘͱ෮ݩΛ༗ޮʹ͢Δ w ෮ݩ͍ͨ͠7JFX$POUSPMMFSʹରͯ͠3FTUPSBUJPO*%Λઃఆ͢Δ w /4$PEFSʹɺඞཁͳσʔλΛอଘ͠ɺ෮ݩͷλΠϛϯάͰ/4$PEFS͔Β σʔλΛऔಘ͢Δ
ࠓ·Ͱͷ͜ͱΕ͍ͯͩ͘͞
4UPSZCPBSEͷϦετΞ w ΞϓϦ͕4DFOF%FMFHBUFʹରԠ͍ͯ͠Δ߹͜ͷϦετΞ͕ಈ͔ͳ͍ w ผͳରԠΛ͢Δඞཁ͕͋Δ
/46TFS"DUJWJUZ
ΞϓϦͷঢ়ଶͷอଘͱ෮ݩ w /46TFS"DUJWJUZΛอଘ͢Δ w ىಈ࣌ɺ/46TFS"DUJWJUZ͔ΒσʔλΛ෮ݩ͢Δ
/46TFS"DUJWJUZͷอଘ
*OGPQMJTUͷฤू w *OGPQMJTUʹ/46TFS"DUJWJUZ5ZQFTΛՃ͢Δ w "SSBZ4USJOH
/46TFS"DUJWJUZͷอଘ w /46TFS"DUJWJUZͷอଘͷλΠϛϯάɺ7JFX$POUSPMMFSͷ WJFX%JE"QQFBSҎ߱ʹߦ͏
func updateUserActivity() { // ݱࡏͷγʔϯͷUserActivityͷऔಘ ͳ͚Ε࡞Δ var currentUserActivity = view.window?.windowScene?.userActivity
if currentUserActivity == nil { currentUserActivity = NSUserActivity(activityType: "com.example.staterestore.mainActivity") } // UserActivityʹσʔλΛ٧ΊΔ currentUserActivity?.title = "λΠτϧ" currentUserActivity?.targetContentIdentifier = "unique id" currentUserActivity?.addUserInfoEntries(from: ["key1": "value1"]) currentUserActivity?.addUserInfoEntries(from: ["key2": 2]) // ݱࡏͷγʔϯʹUserActivityΛ͢ view.window?.windowScene?.userActivity = currentUserActivity }
/46TFS"DUJWJUZͷอଘ w ݱࡏͷγʔϯ͔Β/46TFS"DUJWJUZΛऔΓग़͢ w WJFXXJOEPX XJOEPX4DFOF VTFS"DUJWJUZ͔Βݱࡏͷ/46TFS"DUJWJUZΛऔΓग़͢ w OJMͷ߹ɺ/46TFS"DUJWJUZΛ࡞͢Δ w
BDUJWJUZ5ZQFʹઌఔ*OGPQMJTUͰઃఆͨ͠ͷΛ͏ w /46TFS"DUJWJUZʹର͠ɺ෮ݩʹඞཁͳใΛ٧ΊΔʢޙड़ʣ w ใΛ٧ΊͨޙɺWJFXXJOEPX XJOEPX4DFOF VTFS"DUJWJUZʹ/46TFS"DUJWJUZΛฦ ͢
/46TFS"DUJWJUZʹઃఆ͢Δใ w UJUMF w UBSHFU$POUFOU*EFOUJ fi FS w VTFS*OGP BEE6TFS*OGP&OUSJFT
w ෮ݩʹඞཁͳΛ٧ΊΔ
/46TFS"DUJWJUZΛอଘ͢ΔλΠϛϯά VQEBUF6TFS"DUJWJUZ Λ࣮ߦ͢ΔλΠϛϯάྫ w WJFX%JE"QQFBS w ֤छσʔλ͕มΘͬͨͱ͖ w ฤू͞ΕͨςΩετ w
Ϣʔβʔ͕બதͷΞΠςϜͷมߋ
ϗʔϜը໘ભҠ࣌ʹ/46TFS"DUJWJUZΛอଘ w 4DFOF%FMFHBUFʹTUBUF3FTUPSBUJPO"DUJWJUZ GPS Λ࣮͢Δ w 7JFX$POUSPMMFSͰઃఆ͍ͯͨ͠6TFS"DUJWJUZΛฦ͢ w લड़ͷॲཧΛߦͳ͍ͬͯΕɺTDFOFVTFS"DUJWJUZΛฦ͚ͩ͢Ͱ0,
func stateRestorationActivity(for scene: UIScene) -> NSUserActivity? { scene.userActivity }
ΞϓϦͷ෮ݩ
ΞϓϦͷ෮ݩ w TDFOF @TDFOF6*4DFOF XJMM$POOFDU5PTFTTJPO6*4DFOF4FTTJPO PQUJPOTDPOOFDUJPO0QUJPOT6*4DFOF$POOFDUJPO0QUJPOT w ΞϓϦىಈͷλΠϛϯάͰɺTFTTJPOTUBUF3FTUPSBUJPO"DUJWJUZΛ֬ೝ͢
Δ w TUBUF3FTUPSBUJPO"DUJWJUZͰอଘ͍ͯͨ͠/46TFS"DUJWJUZ͕औಘͰ͖Δ w ը໘ભҠͳͲࣗͰߏங͢Δඞཁ͕͋Δ w 6TFS*OGPͷઃܭ͕ඞཁ
guard let activity = session.stateRestorationActivity else { return } if
activity.activityType == "com.example.staterestore.mainActivity" { let storyboard = UIStoryboard(name: "Main", bundle: .main) if let userInfo = activity.userInfo { // userInfoͷ༰ͰతͷViewControllerΛ෮ݩ͢Δ let detailParentViewController = storyboard.instantiateViewController(withIdentifier: "DetailParentViewController") detailParentViewController.hoge = userInfo[“detailParentViewControllerValue"] // ը໘ભҠΛ෮ݩ͢Δ(ྫͱͯ͠NavigationControllerͷ߹) if let navigationController = window?.rootViewController as? UINavigationController { navigationController.pushViewController(detailParentViewController, animated: false) } } }
4XJGU6*ͰͷϦετΞ
4DFOF4UPSBHF
4DFOF4UPSBHF struct ContentView: View { @State private var isPresented: Bool
= false var body: some View { VStack { Button(action: { isPresented.toggle() }) { Text("Button") } } .sheet(isPresented: $isPresented, content: { Text("present") }) } } 4IFFUද੍ࣔޚΛߦ͏JT1SFTFOUFEΛϦετΞରʹؚΊͯɺ࣍ճىಈ࣌ʹγʔτͷ 1SFTFOUঢ়ଶΛอͭʹʁ
4DFOF4UPSBHF struct ContentView: View { @SceneStorage("ContentView.isPresented") private var isPresented: Bool
= false var body: some View { VStack { Button(action: { isPresented.toggle() }) { Text("Button") } } .sheet(isPresented: $isPresented, content: { Text("present") }) } } !4UBUFΛ!4DFOF4UPSBHFʹม͑Δͱɺ࣍ճىಈ͕࣌อͨΕΔ Ωʔ໊ϢχʔΫʹ͢Δ
4XJGU6* /46TFS"DUJWJUZ
struct ContentView: View { @State private var selectedTitle: Book? =
nil var body: some View { NavigationView { List(bookList) { book in NavigationLink(destination: SwiftUIView(book: $selectedTitle), tag: book, selection: $selectedTitle, label: { Text(book.title) }) } .navigationTitle(Text("Նᕸੴ")) } .onContinueUserActivity("app.hyuga.SwiftUIActivity.restore", perform: { userActivity in selectedTitle = try! userActivity.typedPayload(Book.self) }) } } struct Book: Identifiable, Codable, Hashable { var id: String { title } let title: String let contents: String } τοϓϖʔδͷ7JFXʹPO$POUJOVF6TFS"DUJWJUZΛ࣮ VTFS"DUJWJUZ͔ΒΛΒͬͯ4UBUFΛߋ৽͢ΔΑ͏ʹ͓ͯ͘͜͠ͱͰɺ"DUJWJUZىಈ࣌ʹ/BWJHBUJPO-JOL͕࡞ಈ͢Δ
struct SwiftUIView: View { @Binding var book: Book? var body:
some View { Text(book?.contents ?? "") .userActivity("app.hyuga.SwiftUIActivity.restore", { activity in let returnBook: Book if let activityBook = try? activity.typedPayload(Book.self) { returnBook = activityBook } else { returnBook = book! } activity.title = returnBook.title activity.targetContentIdentifier = returnBook.id activity.isEligibleForSearch = true activity.userInfo = ["title":returnBook.title, "contents": returnBook.contents] }) .navigationTitle(book?.title ?? "") } } VTFS"DUJWJUZΛ࣮ͯ͠ɺBDUJWJUZ͕͋Δ͜ͱΛΒͤΔ JT&MJHJCMF'PS4FBSDIΛUSVFʹͯ͠ɺ4QPUMJHIUݕࡧ͔Β"DUJWJUZ͕ىಈͰ͖ΔΑ͏ʹ͓ͯ͘͠
4XJGU6* /46TFS"DUJWJUZ εϙοτϥΠτݕࡧͰɺຊ Λ։͘͜ͱ͕ՄೳʹͳΔ
ࢀߟϦϯΫ w 3FTUPSJOH:PVS"QQ`T4UBUF w IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOVJLJU VJWJFXDPOUSPMMFSSFTUPSJOH@ZPVS@BQQ@T@TUBUF w 3FTUPSJOH:PVS"QQ`T4UBUFXJUI4XJGU6* w IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOVJLJU
WJFX@DPOUSPMMFSTSFTUPSJOH@ZPVS@BQQ@T@TUBUF@XJUI@TXJGUVJ