全部見せます！最前線エンジニアが語るBleアプリケーションのハマりどころ（iOS）

Developers.IO 2016 F-4 セッションでの発表資料です。

Transcript

1. %FWFMPQFST*0
    ' ాத޹໌ɹϞόΠϧΞϓϦαʔϏε෦
   ⡥
   $MBTTNFUIPE
   *OD ೥݄೔ શ෦ݟͤ·͢ʂ
   ࠷લઢΤϯδχΞ͕ޠΔ
   #-&ΞϓϦέʔγϣϯͷϋϚΓͲ͜ΖʢJ04ʣ  #cmdevio2016
3. ΞδΣϯμ w J04ͷ#-&ʹ͍ͭͯ
   w ϋϚΓͲ͜Ζ
   w αϯϓϧίʔυ
   w ·ͱΊ  ⡥
   $MBTTNFUIPE
   *OD
4. J04ͷ#-&ʹ͍ͭͯ 
5. $PSF#MVFUPPUI w #-&୺຤ͱͷ઀ଓ
   w #-&୺຤ͱͷ઀ଓ͠ɺσʔλͷಡΈॻ͖Λߦ͏ɻ
   w όοΫάϥ΢ϯυͰ΋ಈ࡞͢Δɻ
   w #-&୺຤ͱͯ͠ৼΔ෣͏
   w J04୺຤Λ#-&୺຤ͱͯ͠ଞͷ#-&୺຤ͱ઀ଓ͢Δ͜ͱ͕Ͱ ͖Δɻ
   w J04୺຤ಉ࢜΋઀ଓ͢Δ͜ͱ͕Ͱ͖Δɻ  ⡥
   $MBTTNFUIPE
   *OD
6. J#FBDPO w #-&Λར༻ͨ͠ྖҬ؍ଌαʔϏε
   w ྖҬ΁ͷग़ೖΓΛ؂ࢹ͢Δɻ
   w ݕग़தͷ#FBDPO୺຤·Ͱͷڑ཭Λଌఆ͢Δɻ
   w $PSF-PDBUJPOͷػೳͷͻͱͭ
   w #FBDPOͷݕग़ʹʮ#MVFUPPUIʯΛ࢖༻͢Δɻ
   w όοΫάϥ΢ϯυͰ΋ಈ࡞͢Δɻ  ⡥
   $MBTTNFUIPE
   *OD
7. ࢀߟจݙ w $PSF#MVFUPPUIϓϩάϥϛϯάΨΠυ
   w IUUQTEFWFMPQFSBQQMFDPNKQEPDVNFOUBUJPO $PSF#MVFUPPUI1(QEG
   w J04º#-&
   $PSF
   #MVFUPPUIϓϩάϥϛϯά
   w IUUQHPPHM.8EqT  ⡥
   $MBTTNFUIPE
   *OD
8. ϋϚΓͲ͜Ζ 
9. ϋϚΓͲ͜Ζ w ໨ʹݟ͑ͳ͍΋ͷͱͷઓ͍
   w ి೾͕ຊ౰ʹग़͍ͯΔͷ͔Θ͔Βͳ͍ɻ
   w σʔλ͕ૹ৴͞Ε͍ͯΔͷ͔Θ͔Βͳ͍ɻ
   w 1FSJQIFSBMଆͷಈ࡞
   w ࡞੒͢ΔΞϓϦ͸$FOUSBMͱͯ͠ৼΔ෣͏΋ͷ͕ଟ͍ɻ
   w ݪҼͷ੾Γ෼͚ͷͨΊʹ͸1FSJQIFSBMଆͷ஌͕ࣝඞཁɻ  ⡥
   $MBTTNFUIPE
   *OD
10. ϋϚΓͲ͜Ζ  ⡥
    $MBTTNFUIPE
    *OD
11. αϯϓϧίʔυ  ʙ$FOUSBMͱ1FSJQIFSBMͷڍಈΛཧղ͠Α͏ʙ HJUIVC
    
    IUUQTHJUIVCDPNLPOHNJOHTUSBQ#-&4BNQMFS
12. J04୺຤ಉ࢜Ͱ#-&௨৴ w J04୺຤Λར༻ͯ͠#-&Λ஌Δ
    w ͦΕͧΕ$FOUSBMɺ1FSJQIFSBMͷ໾ׂΛ୲ΘͤΔɻ
    w 1FSJQIFSBMଆͷϘλϯͷԡԼ৘ใΛ$FOUSBMʹ௨஌͢Δɻ  ⡥
    $MBTTNFUIPE
    *OD HJUIVC
    
    IUUQTHJUIVCDPNLPOHNJOHTUSBQ#-&4BNQMFS
13. J04୺຤ಉ࢜Ͱ#-&௨৴  ⡥
    $MBTTNFUIPE
    *OD HJUIVC
    
    IUUQTHJUIVCDPNLPOHNJOHTUSBQ#-&4BNQMFS
14. ಈ࡞֓ཁ w $FOUSBM
    w 1FSJQIFSBMͷεΩϟϯ
    w 1FSJQIFSBMͱ઀ଓ
    w 4FSWJDFͷݕग़
    w $IBSBDUFSJTUJDTͷݕग़
    w มߋ௨஌ઃఆ  ⡥
    $MBTTNFUIPE
    *OD w 1FSJQIFSBM
    w ΞυόλΠζ։࢝
    w $FOUSBMͱ઀ଓ
    HJUIVC
    
    IUUQTHJUIVCDPNLPOHNJOHTUSBQ#-&4BNQMFS
15. 66*%ͷઃఆ  ⡥
    $MBTTNFUIPE
    *OD static private let ServiceUUID = CBUUID(string: "A8C7922D-8849-4FBC-8692-4DBB291F99C8") static private let CharacteristicsUUID = CBUUID(string: "D2E2C5E2-B0B9-4AF6-9AD9-361A819FB30F") $ uuidgen A8C7922D-8849-4FBC-8692-4DBB291F99C8 w 4FSWJDFͱ$IBSBDUFSJTUJDTͷ66*%ΛܾΊΔ
    w VVJEHFOίϚϯυͰੜ੒ͨ͠66*%Λઃఆ͠·͢ɻ
    
16. NBOBHFSͷੜ੒  ⡥
    $MBTTNFUIPE
    *OD self.peripheralManager = CBPeripheralManager( delegate: self, queue: nil, options: [CBPeripheralManagerOptionShowPowerAlertKey: true]) w 1FSJQIFSBM w $FOUSBM self.centralManager = CBCentralManager( delegate: self, queue: nil, options: [CBCentralManagerOptionShowPowerAlertKey: true]) NBOBHFSͷੜ੒͸εΩϟϯɺ઀ଓͷ௚લʹߦΘͳ͍͜ͱɻ
17. NBOBHFSͷੜ੒  ⡥
    $MBTTNFUIPE
    *OD [CBPeripheralManagerOptionShowPowerAlertKey: true] w 1FSJQIFSBM w $FOUSBM [CBCentralManagerOptionShowPowerAlertKey: true] w ΞϥʔτͷΦϓγϣϯ
    w ࢦఆ͓ͯ͘͠ͱNBOBHFSੜ੒࣌ʹ୺຤ͷ #MVFUPPUI͕Φϑͩͬͨ৔߹ʹΞϥʔτ͕ දࣔ͞ΕΔɻ
    w ʮઃఆʯΛλοϓ͢Δͱ#MVFUPPUIͷઃఆ ը໘ʹભҠ͠·͢ɻ
18. ʢ1FSJQIFSBMʣ4FSWJDFͷ௥Ճ  ⡥
    $MBTTNFUIPE
    *OD let service = CBMutableService( type: PeripheralViewController.ServiceUUID, primary: true) service.characteristics = [self.characteristic] self.peripheralManager?.addService(service) private let characteristic = CBMutableCharacteristic( type: PeripheralViewController.CharacteristicsUUID, properties: .Notify, value: nil, permissions: .Readable) w $IBSBDUFSJTUJDTΛઃఆ
    w 4FSWJDF͕࣋ͭ$IBSBDUFSJTUJDΛઃఆ͠·͢ɻ
    w $#1FSJQIFSBM.BOBHFSʹ4FSWJDFΛ௥Ճ
    w ࡞੒ͨ͠$IBSBDUFSJTUJDΛ௥Ճ͓͖ͯ͠·͢ɻ
19. ʢ1FSJQIFSBMʣ4FSWJDFͷ௥Ճ  ⡥
    $MBTTNFUIPE
    *OD w 4FSWJDFͱ$IBSBDUFSJTUJDͷؔ܎
    
20. ʢ1FSJQIFSBMʣΞυόλΠζ։࢝  ⡥
    $MBTTNFUIPE
    *OD self.peripheralManager?.startAdvertising( [CBAdvertisementDataServiceUUIDsKey: ɹɹ [PeripheralViewController.ServiceUUID]]) w ΞυόλΠζΛ։࢝
    w $FOUSBMʹରͯࣗ͠෼ͷଘࡏΛൃ৴͠·͢ɻ
21. ʢ$FOUSBMʣ1FSJQIFSBMͷεΩϟϯ  ⡥
    $MBTTNFUIPE
    *OD self.centralManager?.scanForPeripheralsWithServices( [CentralViewController.ServiceUUID], options: nil) w 1FSJQIFSBMͷεΩϟϯ
    w ΞυόλΠζ͞Ε͍ͯΔ1FSJQIFSBMΛݕग़͠·͢ɻ PQUJPOTʹ
    $#$FOUSBM.BOBHFS4DBO0QUJPO"MMPX%VQMJDBUFT,FZΛ
    USVFͰࢦఆ͢Δͱಉ͡1FSJQIFSBM͕
    Կ౓΋ݕग़͞ΕΔͷͰ஫ҙɻ
22. ʢ$FOUSBMʣ1FSJQIFSBMͷεΩϟϯ  ⡥
    $MBTTNFUIPE
    *OD ࠶઀ଓ࣌͸ͳΔ΂͘εΩϟϯ͠ͳ͍Α͏ʹ͢Δ͜ͱ
23. ʢ$FOUSBMʣ1FSJQIFSBMͱ઀ଓ  ⡥
    $MBTTNFUIPE
    *OD func centralManager( central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) { let foundIds = self.foundPeripherals.map { peripheral in peripheral.identifier.UUIDString } if !foundIds.contains(peripheral.identifier.UUIDString) { self.foundPeripherals.append(peripheral) } } w 1FSJQIFSBMͷݕग़
    w σϦήʔτϝιουʹݕग़ͨ͠1FSJQIFSBM͕ฦ͖ͬͯ·͢ɻ
24. ʢ$FOUSBMʣ1FSJQIFSBMͱ઀ଓ  ⡥
    $MBTTNFUIPE
    *OD self.centralManager?.stopScan() w εΩϟϯͷఀࢭ
    w 1FSJQIFSBMͷݕग़͕ऴΘͬͨΒεΩϟϯΛఀࢭ͠·͢ɻ
    w εΩϟϯ͠ଓ͚Δͱి஑Λফඅ͢Δɻ
25. ʢ$FOUSBMʣ1FSJQIFSBMͱ઀ଓ  ⡥
    $MBTTNFUIPE
    *OD if peripheral.state != .Connected { self.centralManager?.connectPeripheral( peripheral, options: nil) } w ࢦఆͨ͠1FSJQIFSBMͱ઀ଓ
    w ݕग़ࡁΈͷ1FSJQIFSBM΁ͷ઀ଓΛ։࢝͠·͢ɻ
26. ʢ$FOUSBMʣ4FSWJDFͷݕग़  ⡥
    $MBTTNFUIPE
    *OD func centralManager( central: CBCentralManager, didConnectPeripheral peripheral: CBPeripheral) { self.connectedPeripheral = peripheral self.connectedPeripheral?.delegate = self self.connectedPeripheral?.discoverServices( [CentralViewController.ServiceUUID]) w ઀ଓࡁΈͷ1FSJQIFSBMͷ4FSWJDFͷݕग़
    w $#1FSJQIFSBM%FMFHBUFͷઃఆΛߦ͍·͢ɻ
    w ઀ଓࡁΈͷ1FSJQIFSBM͕ࢦఆͨ͠4FSWJDFΛݕग़͠·͢ɻ EJTDPWFS4FSWJDFTʹOJMΛࢦఆ͢Δͱෆඞཁͳ4FSWJDF·Ͱ
    ݕग़͢ΔͨΊɺඞཁͳ4FSWJDFͷΈࢦఆ͢Δ͜ͱɻ
27. ʢ$FOUSBMʣ$IBSBDUFSJTUJDTͷݕग़  ⡥
    $MBTTNFUIPE
    *OD func peripheral( peripheral: CBPeripheral, didDiscoverServices error: NSError?) { if let services = peripheral.services { services.filter { service in service.UUID.data == CentralViewController.ServiceUUID.data }.forEach { service in peripheral.discoverCharacteristics( [CentralViewController.CharacteristicsUUID], forService: service ) } } } w $IBSBDUFSJTUJDTͷݕग़
    w ݕग़ࡁΈͷ4FSWJDFʹରͯ͠$IBSBDUFSJTUJDTΛݕग़͠·͢ɻ
28. ʢ$FOUSBMʣมߋ௨஌ઃఆ  ⡥
    $MBTTNFUIPE
    *OD func peripheral( peripheral: CBPeripheral, didDiscoverCharacteristicsForService service: CBService, error: NSError?) { if service.UUID.data == CentralViewController.ServiceUUID.data, let characteristics = service.characteristics { characteristics.filter { characteristic in characteristic.UUID.isEqual( CentralViewController.CharacteristicsUUID) }.forEach { [unowned self] characteristic in self.setNotify(true, peripheral: peripheral) } } w $IBSBDUFSJTUJDTͷมߋ௨஌ઃఆ
    w ݕग़ࡁΈͷ$IBSBDUFSJTUJDTʹରͯ͠มߋ௨஌ઃఆΛ͠·͢ɻ
29. ʢ1FSJQIFSBMʣมߋ௨஌  ⡥
    $MBTTNFUIPE
    *OD guard let data = "foo".dataUsingEncoding(NSUTF8StringEncoding) else { fatalError("Failed dataUsingEncoding") } self.peripheralManager?.updateValue( data, forCharacteristic: self.characteristic, onSubscribedCentrals: nil) w $FOUSBMʹ௨஌
    w $FOUSBMʹରͯ͠஋ͷมߋΛ௨஌͠·͢ɻ
30. ʢ$FOUSBMʣมߋ௨஌ड৴  ⡥
    $MBTTNFUIPE
    *OD func peripheral( peripheral: CBPeripheral, didUpdateValueForCharacteristic characteristic: CBCharacteristic, error: NSError?) { if characteristic.UUID.data == CentralViewController.CharacteristicsUUID.data { guard let value = characteristic.value else { fatalError("invalid characteristic value.") } guard let string = String(data: value, encoding: NSUTF8StringEncoding) else { return } self.connectedPeripheralLabel.text = string } w 1FSJQIFSBMΑΓมߋ௨஌
    w 1FSJQIFSBM͔Βͷมߋ௨஌Λड৴͠·͢ɻ
31. ʢ$FOUSBMʣ੾அΠϕϯτͷݕग़  ⡥
    $MBTTNFUIPE
    *OD w ੾அΠϕϯτΛϋϯυϦϯά
    w ෺ཧతʹ੾Εͨ৔߹ʹདྷΔΠϕϯτͰ͸ͳ͍ͷͰ஫ҙɻ
    w ͋͘·Ͱ1FSJQIFSBM͕ʮ੾அͨ͠ͱΈͳͯ͠΋ྑ͍ʯঢ়ଶʹͳͬͨ͜ͱΛ௨஌͠·͢ɻ
    func centralManager( central: CBCentralManager, didDisconnectPeripheral peripheral: CBPeripheral, error: NSError?) { if error != nil { let controller = UIAlertController( title: nil, message: NSLocalizedString( "The connection to the device closed.", comment: ""), preferredStyle: .Alert) let okAction = UIAlertAction( title: NSLocalizedString("OK", comment:""), style: .Default, handler: nil) controller.addAction(okAction) self.presentViewController( controller, animated: true, completion: nil) } } }
32. ·ͱΊ 
33. ·ͱΊ  ⡥
    $MBTTNFUIPE
    *OD w $FOUSBMͷॲཧ͕ϝΠϯͰ͸͋Δ͕ɺ1FSJQIFSBMଆ ͷॲཧͷ஌ࣝ΋͋ͬͨ΄͏͕Α͍
    w ి೾ͷ࢖͍ํ΍ి஑ͷण໋ʹ஫ҙΛ෷͏͜ͱ
    w ࠶઀ଓ࣌͸஫ҙ͢Δඞཁ͕͋Δ
    
34. %FWFMPQFST*0
     ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ
    εϥΠυ͸ޙ೔ϒϩάͰެ։͠·͢ɻ  ' ⡥
    $MBTTNFUIPE
    *OD #cmdevio2016