15分で分かるCore Motionの全て

@iOSDC 2017 Reject Conference days1

#iOSDCRC

Transcript

1. 15෼Ͱ෼͔Δ
   CoreMotionͷશͯ
   @iOSDC 2017 Reject Conference days1
   ాத ୡ໵ (@tattn)
   

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2. ·ͣ͸͡Ίʹ
   ↑λΠτϧͷdiff͸ͪ͜ΒʹͳΓ·͢
   15෼Ͱ શͯ ͸ݫ͔ͬͨ͠Ͱ͢
   - શͯ
   + watchҎ֎ͷ΄΅શͯ
   

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3. • Yahoo!৐׵Ҋ಺
   • iOSΞϓϦΤϯδχΞ
   • GitHub: @tattn
   • Qiita: @tattn
   • Twitter: @tanakasan2525
   ాத ୡ໵ (@tattn)
   

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4. CoreMotion
   

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5. CoreMotion
   ୺຤ͷ܏͖΍า਺ͳͲɺσόΠεͷಈ͖ʹؔ͢Δ

   ৘ใΛऔಘͰ͖ΔϑϨʔϜϫʔΫɻ
   iOS 4͔ΒఏڙɻwatchOSͰ΋ར༻Մೳɻ

   (iOS 4 Ҏલ͸ UIAccelerometer ͱ͍͏ΫϥεͰՃ଎౓Λऔಘ͍ͯͨ͠)
   Sensing Device Motion in iOS 4
   https://developer.apple.com/videos/play/wwdc2010/423/
   

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6. CoreMotion
   iPhone 5sҎ߱ʹ౥ࡌͷ

   ίϓϩηοα (M7Ҏ߱) Ͱେ෯ػೳڧԽ
   What's New in Core Motion
   https://developer.apple.com/videos/play/wwdc2015/705/
   ←Ճ଎౓ηϯα
   ←δϟΠϩηϯα
   ←࣓ؾηϯα
   ←ߴ౓ηϯα
   

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7. औಘͰ͖Δ৘ใͷ͢΂ͯ
   Ճ଎౓ηϯα
   δϟΠϩηϯα
   ࣓ؾηϯα
   ߴ౓ηϯα
   • ୺຤ͷ޲͖ (ճస)
   • (୺຤ʹର͢Δ)ॏྗͷํ޲
   • ୺຤ͷՃ଎౓(ॏྗআ֎)
   • ֤ํ޲ͷ࣓ଋີ౓
   • า਺
   • า͍ͨڑ཭ (ਪఆ)
   • ฏۉ/ݱࡏͷา͘଎͞ [m/s]
   • Ұඵؒͷา਺ [า਺/s]
   • า͍ͯొͬͨ֊਺ (ਪఆ)
   • (ଌఆ͔ͯ͠Βͷ)૬ରߴ౓
   • ؾѹ
   • ཱͪࢭ·͔ͬͨ/า͖࢝Ί͔ͨ
   • ׆ಈঢ়ଶ 

   (ఀࢭ/ెา/૸Δ/ࣗಈं/

   ࣗసं)
   GPS
   

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8. ࣮૷ͷྲྀΕ
   

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9. Info.plistʹઃఆͷ௥Ճ
   ※ iOS 10͔ΒϓϥΠόγʔʹؔ͢ΔσʔλʹΞΫηε͢Δࡍ͸ઃఆ͕ඞਢʹ
   Core Motionͷ࢖༻໨తΛ௥Ճ͠·͢
   

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10. σʔλऔಘΫϥεͷੜ੒
    ཉ͍͠σʔλΛऔಘ͢ΔΫϥεΛੜ੒
    // Ճ଎౓ɾδϟΠϩɾ࣓ྗ
    let motionManager = CMMotionManager()
    // า਺
    let pedometer = CMPedometer()
    // ߴ౓
    let altimeter = CMAltimeter()
    // աڈͷՃ଎౓σʔλ
    let sensorRecoder = CMSensorRecorder()
    // Ϣʔβʔͷঢ়ଶ
    let motionActivityManager = CMMotionActivityManager()
    ↑͜ΕͰ؅ཧΫϥε͸શͯͰ͢
    (ൃද࣌)
    

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11. ػೳ͕ར༻Մೳ͔ΛνΣοΫ
    Ϋϥε໊.isʙAvailable()ϝιουͰ

    ୺຤͕ػೳΛར༻Ͱ͖Δ͔ΛऔಘͰ͖Δ
    if CMPedometer.isFloorCountingAvailable() {
    // ར༻Մೳ
    }
    CMAltimeter.isRelativeAltitudeAvailable()
    CMSensorRecorder.isAccelerometerRecordingAvailable()
    CMMotionActivityManager.isActivityAvailable()
    ↑ଞʹ΋ଟ਺͋Γ·͢
    

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12. ػೳͷରԠද
    T TT
    
    
    %FWJDF.PUJPO ˓ ˓ ˓ ˓
    "DDFMFSPNFUFS ˚ SFDPEJOH
    ˚ SFDPEJOH
    ˚ SFDPEJOH
    ˓
    (ZSP ˓ ˓ ˓ ˓
    .BHOFUPNFUFS ˓ ˓ ˓ ˓
    1FEPNFUFS
    ˚
    qPPSDPVOUJOH
    
    QBDF
    
    DBEFODF
    
    FWFOUUSBDLJOH
    
    ˚
    FWFOUUSBDLJOH
    
    ˓ ˓
    "MUJNFUFS ☓ ˓ ˓ ˓
    .PUJPO"DUJWJUZ ˓ ˓ ˓ ˓
    ※()ͷத͸ඇରԠͳػೳ
    

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13. ηϯαʔσʔλͷऔಘ
    ར༻Մೳͳͷ͔ΛνΣοΫޙ

    σʔλऔಘϝιουΛݺͼग़͢
    // σʔλΛऔಘͰ͖Δ৔߹ͷΈऔಘϝιουΛݺͼग़͢Α͏ʹ͢Δ
    if CMPedometer.isPedometerEventTrackingAvailable() {
    pedometer.startEventUpdates { (event, error) in
    // σʔλऔಘͷͨͼʹΫϩʔδϟ͕ݺ͹ΕΔ
    }
    }
    

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14. औಘํ๏ͷछྨ
    1. ηϯαʔͷ஋ͷ؂ࢹ։࢝
    2. ஋Λఆظతʹऔಘ(ΫϩʔδϟorϓϩύςΟ)
    ఆظऔಘ
    ظؒऔಘ
    1. ظؒΛࢦఆ
    2. ظؒதʹଌఆͨ͠σʔλΛऔಘ
    

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15. ύλʔϯ1 - ఆظऔಘ
    CMMotionManager().startDeviceMotionUpdates()
    CMMotionManager().startAccelerometerUpdates()
    CMMotionManager().startGyroUpdates()
    CMMotionManager().startMagnetometerUpdates()
    CMPedometer().startUpdates(from: date) { (data, error) in }
    CMPedometer().startEventUpdates { (event, error) in }
    CMAltimeter()
    .startRelativeAltitudeUpdates(to: .init()) { data, _ in }
    CMMotionActivityManager()
    .startActivityUpdates(to: .init()) { activity in }
    औಘ։࢝ϝιουΛݺͼग़͢
    

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16. ύλʔϯ1 - ఆظऔಘ
    manager.deviceMotion?.rotationRate
    motionActivityManager.startActivityUpdates(to: .init()) { activity in
    guard let activity = activity else { return }
    if activity.stationary {
    print("ࢭ·ͬͯΔΑ")
    }
    if activity.cycling {
    print("νϟϦͰདྷͨ")
    }
    }
    ϓϩύςΟ·ͨ͸ΫϩʔδϟͰ஋Λड͚औΔ
    

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17. ύλʔϯ2 - ظؒͰऔಘ
    let now = Date()
    let dayBeforeYesterDay = now.addingTimeInterval(-60 * 60 * 24 * 2)
    pedometer.queryPedometerData(from: dayBeforeYesterDay,
    to: now) { data, error in
    guard let data = data, error == nil else { return }
    print(data.distance ?? 0)
    print(data.numberOfSteps)
    print(data.floorsAscended ?? 0)
    }
    (from:to)ͰظؒΛࢦఆ͢Δ
    

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18. CoreMotionͷڐՄঢ়ଶͷνΣοΫ
    pedometer.queryPedometerData(from: now, to: now) { (data, error) in
    if let code = error?._code,
    code == Int(CMErrorMotionActivityNotAuthorized.rawValue) {
    // ະڐՄ
    }
    iOS10·Ͱ͸

    errorͰ൑ఆ͢Δ͔͋͠Γ·ͤΜͰͨ͠ʘ(^o^)ʗ
    

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19. ڐՄঢ়ଶΛࣄલʹऔಘՄೳʹ
    ࠓ·Ͱ
    iOS 11 / watchOS 4͔Β
    pedometer.queryPedometerData(from: now, to: now) { (data, error) in
    if let code = error?._code,
    code == Int(CMErrorMotionActivityNotAuthorized.rawValue) {
    // ະڐՄ
    }
    if CMPedometer.isStepCountingAvailable() {
    switch CMPedometer.authorizationStatus() {
    case .notDetermined:
    break
    case .restricted:
    break
    case .denied:
    break
    case .authorized:
    break
    }
    }
    

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20. CoreMotionͷڐՄঢ়ଶͷνΣοΫ
    ͢ͰʹiOS11ະຬΛ੾ΕΔ

    ϫΠϧυͳ

    αʔϏεͷ৔߹͸ࣄલʹνΣοΫ͠·͠ΐ͏
    

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21. ࣮૷্ͷ஫ҙ఺
    

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22. Operation Queueʹ஫ҙ
    ͲͷOperation QueueͰσʔλΛड͚औΔ͔ΛࢦఆͰ͖Δ
    motionManager.startMagnetometerUpdates(to: .main) { (data, error) in
    // ϝΠϯεϨου
    }
    ↑OperationQueue.main͸σʔλऔಘͷͨͼʹ

    UIεϨουΛϒϩοΩϯά͢Δ͜ͱʹͳΔɻɻ
    Because the processed events might arrive at a high rate, using the
    main operation queue is not recommended.
    https://developer.apple.com/documentation/coremotion/cmmotionmanager/1615968-startmagnetometerupdates
    

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23. Operation Queueʹ஫ҙ
    όοΫάϥ΢ϯυεϨουͰड͚औΓɺ

    ඞཁʹԠͯ͡ϝΠϯεϨουʹ੾Γସ͑ΔΑ͏ʹ͢Δͱྑ͍
    motionManager.startMagnetometerUpdates(to: .init()) { (data, error) in
    // όοΫάϥ΢ϯυεϨου
    if ඞཁͳΒ {
    DispatchQueue.main.async {
    // UIͷߋ৽
    }
    }
    }
    

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24. CMMotionManager
    CMMotionManager͸ಉ࣌ʹෳ਺ͷΠϯελϯεΛ࡞੒ͯ͠͸͍͚ͳ͍
    https://developer.apple.com/documentation/coremotion/cmmotionmanager
    Ճ଎౓ɾδϟΠϩɾ࣓ྗͳΜͰ΋औಘͰ͖ΔਆΫϥε
    CMMotionManager().startMagnetometerUpdates(to: .init()) { (data, error) in
    }
    CMMotionManager().startAccelerometerUpdates(to: .init()) { (data, error) in
    }
    ෼͔Γ΍͍͢μϝͳྫ
    

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25. CMMotionManager
    ෳ਺ͷը໘Ͱར༻͢Δ৔߹͸

    γϯάϧτϯΛ࡞Δͷ͕Φεεϝ
    https://developer.apple.com/documentation/coremotion/cmmotionmanager
    final class SharedMotionManager: CMMotionManager {
    static let shared = SharedMotionManager()
    // Ϋϥε֎ͰͷΠϯελϯεੜ੒ͷ๷ࢭ
    private override init() {
    super.init()
    }
    }
    

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26. ༷ʑͳଌఆํ๏͕͋Δ
    

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27. ༷ʑͳଌఆํ๏͕͋Δ
    xArbitraryZVertical
    Z͕࣠ਨ௚ɺX͕࣠ฏ໘ͷ೚ҙํ޲
    xArbitraryCorrectedZVertical
    ࣓ؾηϯαͰyawͷਫ਼౓͕޲্ͨ͠xArbitraryZVertical

    CPU࢖༻཰্͕͕Δ
    xMagneticNorthZVertical
    Z͕࣠ਨ௚ɺX͕࣓࣠๺

    ୺຤Λಈ͔࣓ͯ͠ؾηϯαͷΩϟϦϒϨʔγϣϯ͕ඞཁ
    xTrueNorthZVertical
    Z͕࣠ਨ௚ɺX͕࣠ਅ๺

    ࣓๺ͱਅ๺ͷܭࢉʹ࣓ؾηϯαͱGPSΛ࢖༻
    

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28. ༷ʑͳଌఆํ๏͕͋Δ
    xArbitraryCorrectedZVertical
    ࣓ؾηϯαͰyawͷਫ਼౓͕޲্ͨ͠xArbitraryZVertical

    CPU࢖༻཰্͕͕Δ
    xTrueNorthZVertical
    Z͕࣠ਨ௚ɺX͕࣠ਅ๺

    ࣓๺ͱਅ๺ͷܭࢉʹ࣓ؾηϯαͱGPSΛ࢖༻
    ࣮͸࣓ؾηϯαΛ࢖༻

    (໊લ͔Β͸Θ͔Γʹ͍͘)
    ࣮͸GPSΛ࢖༻

    (GPSͷڐՄΞϥʔτग़ͳ͍ & 

    Ґஔ৘ใαʔϏεͷON͕ඞਢ)
    

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29. ࠷ޙʹ
    

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30. ػೳͷରԠද
    ※()ͷத͸ඇରԠͳػೳ
    T TT
    
    
    %FWJDF.PUJPO ˓ ˓ ˓ ˓
    "DDFMFSPNFUFS ˚ SFDPEJOH
    ˚ SFDPEJOH
    ˚ SFDPEJOH
    ˓
    (ZSP ˓ ˓ ˓ ˓
    .BHOFUPNFUFS ˓ ˓ ˓ ˓
    1FEPNFUFS
    ˚
    qPPSDPVOUJOH
    
    QBDF
    
    DBEFODF
    
    FWFOUUSBDLJOH
    
    ˚
    FWFOUUSBDLJOH
    
    ˓ ˓
    "MUJNFUFS ☓ ˓ ˓ ˓
    .PUJPO"DUJWJUZ ˓ ˓ ˓ ˓
    

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31. ࠷ޙʹ
    https://github.com/tattn/TryCoreMotion
    ΄΅શػೳ࢖ͬͨαϯϓϧΞϓϦ࡞Γ·ͨ͠
    

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32. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
    

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