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MVVMをベースに複雑な振る舞いを しっかり把握できるアプリ開発
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yohei sugigami
August 26, 2015
Technology
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5.7k
MVVMをベースに複雑な振る舞いを しっかり把握できるアプリ開発
Realm meetup #6 で発表した
Sync iOS開発の舞台裏についてです
プロジェクトの話や、MVVM、ViewBindingなど多義にわたり解説しています
yohei sugigami
August 26, 2015
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Transcript
MVVMΛϕʔεʹෳࡶͳৼΔ͍Λ ͔ͬ͠ΓѲͰ͖ΔΞϓϦ։ൃ yohei SUGIGAMI 10/21 shibuya.swift
None
Wantedly
Sync Messenger 8FC %FTLUPQ"QQ "OESPJE BOEJ04 ϏδωείϛϡχέʔγϣϯಛԽϝοηʔδϯάαʔϏε
Sync iOS 4XJGU .77. '31 1SPNJTF Ϟμϯͳཁૉٕज़
Let’s Try TZOD Ұ൪࠷ॳͷݕࡧ݁Ռʹग़Δͣʂ
Projects Summary
Service Architecture $MJFOU$SPTT1MBUGPSN 4FSWFS.JDSPTFSWJDFT
Team "1* 8FC%FTLUPQ J04 "OESPJE GBTUMBOF
iOS Schedule ݄̑ ݄̒ ݄̓ ϓϩτλΠϓ։ൃ 'JSFCBTFબఆ +0*/ ਃ νʔϜ4MBDLஔ͖͑
ࣾ4MBDLஔ͖͑ +0*/ ຊ։ൃ ࣾ֎ϢʔβϑΟʔυόοΫ ϲ݄ɺ̒ਓ݄͙Β͍ +0*/
High Speed Development 13$MPTFE *TTVFT$MPTFE ݄࣌ $PNNJU
Review ϨϏϡʔΞʔΞαΠϯ 5FTU͕͚ͯ͜Δͷ $JSDMF$*ͷௐࢠ͕ѱ͍ɻɻ
Review Ϟνϕʔγϣϯ61Ͱ ੜ࢈ੑ্
Delivery by fastlane 1VMM 3FR .FSHF .BTUFS %FMJWFSZ %FW5FTUFS .BTUFSʹ.FSHF͢ΔʹλΠϜϦʔͳΞϓϦ
͡Ζ͏͘ΜۘͷGBTUpMF
Dog feeding ։ൃ̎िؒͰ4MBDL͔ΒΓ͑Δ ։ൃऀͰ͋Δ͔ࣗͨͪΒ·ͣϑΝϯʹͳΔ ։ൃ̍ϲ݄ͰࣾͰͬͯΒ͍ϑΟʔυόοΫΛΒ͏ ։ൃ̎ϲ݄Ͱۙͳࣾ֎ͷํʑʹͬͯΒ͍͞Βʹ ଟ͘ͷϑΟʔυόοΫΛ͖·ͨ͠
Very Slow Swift Compile ̍ਓ.BD#PPL1SP̎Ͱ։ൃ ίϯύΠϧͪ࣌ؒΛ༗ޮ׆༻ ܕਪͱΫϩδϟʔΩϟϓνϟ͕ͦ͏
Very Slow Swift Compile .BD#PPL1SP JODI -BUF ͰϑϧίϯύΠϧ࣌ؒ ˠɹ̐ඵ ίʔυΛݟͯ͠ίϯύΠϧߴԽ
ˠɹඵʢඵʣ ˠɹࠩίϯύΠϧͷՄೳੑΞοϓ ܕਪ͠ͳ͍ͰܕΛ໌ه͢Δʢ"SSBZ%JDUJPOBSZʣ ෳͷTXJGUϑΝΠϧΛҰͭʹ·ͱΊΔ ܧঝ͠ͳ͍DMBTTpOBMΛ໌ه͢Δ $BSUBHFରԠͷϥΠϒϥϦ1PETͰΠϯετʔϧ͠ͳ͍
App Architecture
MVVM (෩) $POUSPMMFS 7JFX.PEFM .PEFM 3FBDU,JU 4XJGU5BTL 4XJGUZ+40/ 4XJGU#POE 3FBMN
3BX%BUB 1FSTJTUFOU 4UBUF.BOBHFNFOU -PHJD 7JFX%BUB 6*,JU%FMFHBUF #JOEJOH -JCSBSZ 3FTQPOTJCJMJUZ $SFBUF7JFX 4%8FC*NBHF 7JFX7JFX -BZFS
ViewDataBinding 4UBUF 7JFX $POUSPMMFS 7JFX.PEFM %BUB ͱؔ৺ࣄͷ -PHJD 7JFX 7JFX.PEFMͷ-PHJD
4UBUF %BUBͷมߋ͕ 7JFXʹ͍ͭͯؔ͠ͳ͍ PS #JOE 7JFX4UBUF %BUB͕มߋ ͞ΕͨΒಈతʹը໘Λߋ৽ %BUB 4UBUFͷϓϩηεؔ͠ͳ͍ 7JFX #JOEJOH .FUIPE$BMM
Instane Relation 7JFX7JFX $POUSPMMFS 7JFX.PEFM .PEFM ʜ ʜ 3FGFSFODF #VTJOFTT-PHJD
4VC-PHJD 4IBSF-PHJD 4VC-PHJD %BUB %BUB %BUB %BUB %BUB %BUB .BQQJOH #JOEJOH 7JFX #JOEJOH 1SFTFOUBUJPO-PHJD 7JFX.PEFMଞͷϨΠϠʔͷࢀরΛ࣋ͨͳ͍
Request Data Flow Sequence 4XJGUZ+40/ 3FBMN 4XJGU5BTL 4XJGU#POE 1FSTJTUFODF 7JFX#JOEJOH
"1*
Request ViewBinding 4UBUF3FRVFTUJOH 4UBUF&SSPS JUFNT<> 4UBUF/POF *OEJDBUPS7JFX 3FUSZ7JFX /P%BUB7JFX
Request ViewBinding 4UBUF3FRVFTUJOH 4UBUF&SSPS JUFNT<JUFN JUFN JUFN ʜ> 4UBUF/POF *OEJDBUPS7JFX
3FUSZ7JFX /P%BUB7JFX
Request ViewBinding final class RequestListViewModel<T: Identifier> { let items: DynamicArray<T>
= DynamicArray([]) var requestListState = Dynamic<RequestListState>(.None) var noDataFirstViewHidden: Dynamic<Bool> { let a = indicatorViewHidden.map { $0 == false } let b = requestListFirstState.map { $0 == .Error } return reduce(a, b, c) { $0 || $1 == true } } var indicatorViewHidden: Dynamic<Bool> { let a = requestListFirstState.map { $0 != RequestListState.Requesting } let b = items.map { count($0) > 0 } return reduce(a, b) { $0 || $1 == true } } var retryViewHidden: Dynamic<Bool> { let a = requestListFirstState.map { $0 != RequestListState.Error } let b = items.map { count($0) > 0 } return reduce(a, b) { $0 || $1 == true } } 3FRVFTU4UBUFͱ*UFNTͷঢ়ଶͷΑΔڍಈΛએݴ
Request ViewBinding final class ContactsViewController: UIViewController { var tableViewDataSourceBond: UITableViewDataSourceBond<ContactCell>!
let viewModel = ContactsViewModel() let indicatorView = InstantiateFromNib(IndicatorView) let retryView = InstantiateFromNib(RetryView) let noDataView = InstantiateFromNib(NoDataView) override func viewDidLoad() { super.viewDidLoad() viewModel.requestList.indicatorViewHidden ->> indicatorView.dynHidden viewModel.requestList.retryViewHidden ->> retryView.dynHidden viewModel.requestList.noDataFirstViewHidden ->> noDataView.dynHidden } 7JFX$POUSPMMFSͰ7JFX.PEFMͷ4XJGU#POEͱ7JFXΛ#JOEJOH
Request ViewBinding final class RequestListViewModel<T: Identifier> { typealias RequestTask =
Task<Progress, ResponseCollection<T>, NSError> func requestFirst(task: RequestTask) -> RequestTask { self.requestListState.value = .Requesting task.success { [weak self] (collection: ResponseCollection<T>) -> Void in self?.items.setArray(collection.items) self?.requestListState.value = .None }.failure { [weak self] (errorInfo: RequestTask.ErrorInfo) -> Void in self?.requestListState.value = .Error } return task } 3FRVFTUͷ։࢝ɺਖ਼ৗྃɺҎ্ྃͰ4BUFΛߋ৽ ਖ਼ৗྃ࣌ʹJUFNTΛߋ৽
Request ViewBinding final class RequestListViewModel<T: Identifier> { lazy var stateChangedObserver
= Bond<RequestListState> { [weak self] state in switch state { case .Requesting: UIApplication.sharedApplication().networkActivityIndicatorVisible = true default: UIApplication.sharedApplication().networkActivityIndicatorVisible = false } } init() { requestListState ->| stateChangedObserver } OFUXPSL"DUJWJUZ*OEJDBUPS7JTJCMFΛ4UBUFͰ#JOEJOH
Input with Validation ViewBinding &OBCMF4JHO6Q#VUUPO 7BMJEBUJPO&NBJM1BTTXPSE
Validation ViewBinding final class SignUpViewModel { let email = Dynamic<String>("")
let password = Dynamic<String>("") var emailError: Dynamic<NSError?> { return email.map { Validator.Email($0).validate() } } var passwordError: Dynamic<NSError?> { return password.map { Validator.Password($0).validate() } } var isSignInInput: Dynamic<Bool> { let isEmailValid = emailError.map { nil == $0 } let isPasswordValid = passwordError.map { nil == $0 } return reduce(isEmailValid, isPasswordValid) { $0 && $1 == true } } &NBJMͱ1BTTXPSEͷ7BMJEBUJPOʹΑͬͯ 4JHO6Q͕&OBCMFʹͳΔ͔Λએݴ
Validation ViewBinding final class SignUpViewController { override func viewDidLoad() {
super.viewDidLoad() emailTextField ->> viewModel.email passwordTextField ->> viewModel.password viewModel.signUpState ->| signUpStateChangedObserver viewModel.isSignInInput ->> signUpButton.dynEnabled 7JFX$POUSPMMFSͰ7JFX.PEFMͷ4XJGU#POEͱ7JFXΛ#JOEJOH enum Validator { case Email(String?) case Password(String?) func validate() -> NSError? { switch self { case .Email(var value): return NGRValidator.validateValue(value, named: LocalizedString("Email")) { (validator: NGRPropertyValidator!) in validator.required().msgNil(LocalizedString("is required.")) validator.syntax(NGRSyntax.Email).msgWrongSyntax(NGRSyntax.Email, LocalizedString("is not valid syntax.")) } case .Password(var value): return NGRValidator.validateValue(value, named: LocalizedString("Password")) { (validator: NGRPropertyValidator!) in validator.required().msgNil(LocalizedString("is required.")) validator.minLength(6).msgTooShort(LocalizedString("is too short.")) }
No inherits 7JFX$POUSPMMFS 7JFX 7JFX.PEFM .PEFMʹ͓͍ͯ "CTUSBDUϨΠϠʔΛઃ͚ͳ͍ʢܧঝ͠ͳ͍ʣ ܧঝ͢Δͱɺɺɺ ϩδοΫڍಈΛཧղʹ͠ʹ͍͘
ڞ௨Խͨ͠ίʔυΛมߋ͠ʹ͍͘ SFGT J04ΞϓϦͷઃܭͰ#BTF7JFX$POUSPMMFSͷΑ͏ͳͷ࡞Γͨ͘ͳ͍CZࠓઌੜ IUUQRJJUBDPNZJNBKPJUFNTFGFCECGE
No inherits %FMFHBUF (FOFSJDT .PEFMΛҙͷ1SPUPDPMΛ४ڌͤͯ͞ (FOFSJDTͰϩδοΫΛڞ௨Խ
"TQFDU ϩΪϯά"OBMZUJDTૹ৴ $MBTT ڞ௨ॲཧΛ$MBTTͱͯ͠Γग़͠ ڞ௨Խ͍ͨ͠ίʔυҎԼͷ׆༻Λݕ౼͢Δ
Qiitaʹॻ͖·ͨ͠ IUUQRJJUBDPNTVTJFZZJUFNTBGCCEGG
Enjoy Sync life.
iOS, Android Rails ΤϯδχΞ ืूத
MVVM .7$%JBHSBN 7JFX$POUSPMMFS 7JFX .PEFM 7JFX$POUSPMMFSJTlEPFTBMMUIFUIJOHTz
MVVM .77.%JBHSBN 7JFX 7JFX$POUSPMMFS 7JFX.PEFM .PEFM 7JFX$POUSPMMFSCFDPNFTNBMMFS 7JFXJTTUBUFMFTT