BLEを使ったアプリを継続的に開発するために

DroidKaigi 2022
BLEを使ったアプリを継続的に開発するために
Ensure maintainability of apps that use BLE

Transcript

1. BLEΛ࢖ͬͨΞϓϦΛ ܧଓతʹ։ൃ͢ΔͨΊʹ @MoyuruAizawa
2. Moyuru Aizawa Software Engineer of Catlog, RABO. Previously at Azit, CyberAgent, and Eureka. Love Metal, Hardcore and EDM. Author of “ΈΜͳͷKotlin”. MoyuruAizawa Rank
6. ‣ BLEʹΑΔσόΠεͱͷ௨৴ํ๏ ‣ GATT ‣ BluetoothGatt ‣ Coroutine, FlowΛ࢖ͬͨվળ ‣ Tips ͸ͳ͢͜ͱ
7. ‣ BLEΛ࢖͏ΞϓϦ࡞ͬͯͱݴΘΕͨΒԿͱͳ͘͜ͷηογϣϯͷ͜ͱ Λࢥ͍ग़͢ ‣ ͦͯ͠BLEؔ࿈ͷAPIͷ࢖͍ํΛͳΜͱͳ͘ΩϟονΞοϓ͢Δ ‣ ͍ͭ͜͸CoroutineͱFlow࢖࣮ͬͯ૷ͨ͠Μͩ΄ʙΜ🤔ͬͯࢥ͏ ‣ ΅͘ͷ͔Μ͕͍͖͑ͨ͞ΐ͏ͷBLEΞϓϦΛ࣮૷͢Δ ΰʔϧ
8. BLE BLE (Bluetooth Low Energy) Bluetooth Low Energy (Bluetooth LE, BLE) ͱ͸ɺແઢPANٕज़Ͱ ͋Δ Bluetooth ͷҰ෦Ͱɺόʔδϣϯ 4.0 ͔Β௥Ճʹͳͬͨ௿ফඅ ిྗͷ௨৴Ϟʔυɻ Ҿ༻: https://ja.wikipedia.org/wiki/Bluetooth_Low_Energy
9. ‣ BluetoothLeScanner ‣ पลͷBluetoothDeviceΛscan͢Δ ‣ BluetoothDevice ‣ deviceͷ৘ใ(name, address…)Λऔಘ͢Δ ‣ deviceͱconnectionΛுΔ ‣ BluetoothGatt, BluetoothGattService, BluetoothGattCharacteristic, BluetoothGattDescriptor ‣ GATTΛ࢖ͬͯdeviceͱ௨৴͢Δ BLEͰѻ͏ओͳAPI
10. ‣ BluetoothLeScanner ‣ पลͷBluetoothDeviceΛscan͢Δ ‣ BluetoothDevice ‣ deviceͷ৘ใ(name, address…)Λऔಘ͢Δ ‣ deviceͱconnectionΛுΔ ‣ BluetoothGatt, BluetoothGattService, BluetoothGattCharacteristic, BluetoothGattDescriptor ‣ GATTΛ࢖ͬͯdeviceͱ௨৴͢Δ BLEͰѻ͏ओͳAPI
11. GATT? 🤔
12. GATT (Generic Attribute) GATT Service Characteristic Declaration, Value, Descriptor Characteristic Declaration, Value, Descriptor
13. ͳΔ΄ͲΘ͔ΒΜ
15. ‣ ؾԹΛऔಘͰ͖Δ ‣ ࣪౓ΛऔಘͰ͖Δ ‣ ੺֎ઢͷൃ৴Λ໋ྩͰ͖Δ ‣ ௚લʹड৴ͨ͠੺֎ઢͷσʔλΛऔಘͰ͖Δ ՍۭͷεϚʔτϦϞίϯΛߟ͑ͯΈΔ e.g. ImaginaryRemo BLEΛ௨ͯ͠
16. GATT (Generic Attribute) GATT MeterService Temperature Characteristic 24.6℃ Humidity Characteristic 52% IRService Send Characteristic Received Characteristic e.g. ImaginaryRemo
17. ࢼ͠ʹImaginaryRemo͔Β ࣪౓Λऔಘͯ͠ΈΑ͏
18. ‣ ImaginaryRemoͱͷίωΫγϣϯΛுΔ ‣ onConnectionStateChangeͰCONNECTED͕དྷΔͷΛ଴ͭ ‣ ίωΫγϣϯ͕ுΕͨΒdiscoverServicesͰServicesΛ୳͢ ‣ onServicesDiscoveredͰServices͕ݟ͔ͭΔͷΛ଴ͭ ‣ BluetoothGattΛ௨ͯ͡໨తͷServiceΛऔಘ͠ɺ BluetoothGattService͔Β໨తCharacteristicΛऔಘ͠ɺૢ࡞͢Δ େ·͔ͳྲྀΕ
19. imaginaryRemoDevice.connectGatt( context = context, autoConnect = false, callback = object : BluetoothGattCallback() { … } ) BluetoothDevice#connectGatt
20. imaginaryRemoDevice.connectGatt( context = context, autoConnect = false, callback = object : BluetoothGattCallback() { … } ) BluetoothDevice#connectGatt
21. override fun onConnectionStateChange( gatt: BluetoothGatt, status: Int, newState: Int ) { if (newState == BluetoothGatt.STATE_CONNECTED) { val isDiscoveryStarted = gatt.discoverServices() if (!isDiscoveryStarted) { // operationͷࣦഊΛϢʔβʔʹ௨஌ͨ͠ΓͳͲɻ } } BluetoothGattCallback#onConnectionStateChange
22. override fun onConnectionStateChange( gatt: BluetoothGatt, status: Int, newState: Int ) { if (newState == BluetoothGatt.STATE_CONNECTED) { val isDiscoveryStarted = gatt.discoverServices() if (!isDiscoveryStarted) { // operationͷࣦഊΛϢʔβʔʹ௨஌ͨ͠ΓͳͲɻ } } BluetoothGattCallback#onConnectionStateChange
23. override fun onConnectionStateChange( gatt: BluetoothGatt, status: Int, newState: Int ) { if (newState == BluetoothGatt.STATE_CONNECTED) { val isDiscoveryStarted = gatt.discoverServices() if (!isDiscoveryStarted) { // operationͷࣦഊΛϢʔβʔʹ௨஌ͨ͠ΓͳͲɻ } } BluetoothGattCallback#onConnectionStateChange
24. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristic = gatt.getService(METER_SERVICE_UUID) ?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID) requireNotNull(characteristic) val isSuccess = gatt.readCharacteristic(characteristic) if (!isSuccess) { // operationͷࣦഊΛϢʔβʔʹ௨஌ͨ͠ΓͳͲɻ Ҏ߱εϥΠυ಺Ͱ͸লུ } } BluetoothGattCallback#onServiceDiscovered
25. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristic = gatt.getService(METER_SERVICE_UUID) ?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID) requireNotNull(characteristic) val isSuccess = gatt.readCharacteristic(characteristic) if (!isSuccess) { // operationͷࣦഊΛϢʔβʔʹ௨஌ͨ͠ΓͳͲɻ Ҏ߱εϥΠυ಺Ͱ͸লུ } } BluetoothGattCallback#onServiceDiscovered
26. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristic = gatt.getService(METER_SERVICE_UUID) ?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID) requireNotNull(characteristic) val isSuccess = gatt.readCharacteristic(characteristic) if (!isSuccess) { // operationͷࣦഊΛϢʔβʔʹ௨஌ͨ͠ΓͳͲɻ Ҏ߱εϥΠυ಺Ͱ͸লུ } } BluetoothGattCallback#onServiceDiscovered
27. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristic = gatt.getService(METER_SERVICE_UUID) ?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID) requireNotNull(characteristic) val isSuccess = gatt.readCharacteristic(characteristic) if (!isSuccess) { // operationͷࣦഊΛϢʔβʔʹ௨஌ͨ͠ΓͳͲɻ Ҏ߱εϥΠυ಺Ͱ͸লུ } } BluetoothGattCallback#onServiceDiscovered
28. override fun onCharacteristicRead( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int ) { if ( characteristic.uuid == HUMIDITY_CHARACTERISTIC_UUID ) { characteristic.value // ࣪౓ GET!! } } BluetoothGattCallback#onCharacteristicRead
29. override fun onCharacteristicRead( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int ) { if ( characteristic.uuid == HUMIDITY_CHARACTERISTIC_UUID ) { characteristic.value // ࣪౓ GET!! } } BluetoothGattCallback#onCharacteristicRead
30. ‣ onConnectionStateChangeͰCONNECTEDΛ଴ͭ ‣ discoverServicesΛ࣮ߦ͢Δ ‣ onServicesDiscoveredΛ଴ͭ ‣ onServicesDiscoveredҎ߱ ೚ҙͷService, CharacteristicʹΞΫηεՄೳʹͳΔ ‣ READ/WRITEΛߦͬͨΒͦͷ׬ྃ΋଴ͨͳ͚Ε͹ͳΒͳ͍ ͓͖͍֮͑ͯͨ͜ͱ
32. ImaginaryRemoʹ͍ͭͯ ΋͏গ͠ෳࡶͳέʔεΛߟ͑ͯΈΔ
33. ‣ αʔόʔΛܦ༝ͯ͠ɺ֎ग़ઌ͔ΒՈిΛૢ࡞Ͱ͖Δ ‣ Wi-Fiʹ઀ଓ͢Δඞཁ͕͋Δɻ ‣ σόΠε͕ΞΫηεՄೳͳWi-FiͷSSIDҰཡΛεϚʔτϑΥϯʹฦ͢ ‣ Wi-FiͷSSIDͱPASSWORDΛσόΠεʹૹ৴͢Δ ྫ͑͹ɺσόΠεͷॳظઃఆϑϩʔ
34. Service͸͓ͦΒ͘͜ͷΑ͏ͳઃܭʹͳΔ ConfigurationService SSID Characteristic Password Characteristic FoundSSID Characteristic RequestSearchSSID Characteristic
35. override fun onConnectionStateChange( gatt: BluetoothGatt, status: Int, newState: Int ) { if (newState == BluetoothGatt.STATE_CONNECTED) gatt.discoverServices() } ͱΓ͋͑ͣconnectedΛ଴ͭ
36. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristics = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(FOUND_SSID_CHARACTERISTIC) requireNotNull(characteristics) gatt.setCharacteristicNotification(characteristics, true) val descriptor = characteristics.getDescriptor(CCCD) descriptor .value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE gatt.writeDescriptor(descriptor) } servicesDiscoveredΛ଴ͭ
37. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristics = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(FOUND_SSID_CHARACTERISTIC) requireNotNull(characteristics) gatt.setCharacteristicNotification(characteristics, true) val descriptor = characteristics.getDescriptor(CCCD) descriptor .value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE gatt.writeDescriptor(descriptor) } σόΠε͕ݟ͚ͭͨSSIDΛ௨஌͢ΔΑ͏ઃఆ͢Δ
38. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristics = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(FOUND_SSID_CHARACTERISTIC) requireNotNull(characteristics) gatt.setCharacteristicNotification(characteristics, true) val descriptor = characteristics.getDescriptor(CCCD) descriptor .value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE gatt.writeDescriptor(descriptor) } σόΠε͕ݟ͚ͭͨSSIDΛ௨஌͢ΔΑ͏ઃఆ͢Δ
39. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristics = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(FOUND_SSID_CHARACTERISTIC) requireNotNull(characteristics) gatt.setCharacteristicNotification(characteristics, true) val descriptor = characteristics.getDescriptor(CCCD) descriptor .value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE gatt.writeDescriptor(descriptor) } σόΠε͕ݟ͚ͭͨSSIDΛ௨஌͢ΔΑ͏ઃఆ͢Δ
40. override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { val characteristics = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(FOUND_SSID_CHARACTERISTIC) requireNotNull(characteristics) gatt.setCharacteristicNotification(characteristics, true) val descriptor = characteristics.getDescriptor(CCCD) descriptor .value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE gatt.writeDescriptor(descriptor) } σόΠε͕ݟ͚ͭͨSSIDΛ௨஌͢ΔΑ͏ઃఆ͢Δ BluetoothSIGͰ༧Ί ఆٛ͞Ε͍ͯΔUUID
41. override fun onDescriptorWrite( gatt: BluetoothGatt, descriptor: BluetoothGattDescriptor, status: Int ) { if (descriptor.uuid == CCCD) { val characteristic = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(REQUEST_SEARCH_SSID_CHARACTERISTIC) requireNotNull(characteristic) characteristic.value = flag gatt.writeCharacteristic(characteristic) } } ௨஌ͷઃఆ׬ྃΛ଴ͭ
42. override fun onDescriptorWrite( gatt: BluetoothGatt, descriptor: BluetoothGattDescriptor, status: Int ) { if (descriptor.uuid == CCCD) { val characteristic = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(REQUEST_SEARCH_SSID_CHARACTERISTIC) requireNotNull(characteristic) characteristic.value = flag gatt.writeCharacteristic(characteristic) } } SSIDͷݕࡧΛ໋ྩ͢Δ
43. override fun onDescriptorWrite( gatt: BluetoothGatt, descriptor: BluetoothGattDescriptor, status: Int ) { if (descriptor.uuid == CCCD) { val characteristic = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(REQUEST_SEARCH_SSID_CHARACTERISTIC) requireNotNull(characteristic) characteristic.value = flag gatt.writeCharacteristic(characteristic) } } SSIDͷݕࡧΛ໋ྩ͢Δ
44. override fun onCharacteristicChanged( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic ) { if (characteristic.uuid == FOUND_SSID_CHARACTERISTIC) { appendSsidToList(characteristic.value) } } ݟ͔ͭͬͨSSIDͷ௨஌Λ଴ͬͯஞ࣍UIʹ൓ө͢Δ
45. override fun onCharacteristicChanged( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic ) { if (characteristic.uuid == FOUND_SSID_CHARACTERISTIC) { appendSsidToList(characteristic.value) } } ݟ͔ͭͬͨSSIDͷ௨஌Λ଴ͬͯஞ࣍UIʹ൓ө͢Δ
46. onClick { val characteristic = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(SSID_CHARACTERISTIC) requireNotNull(characteristic) characteristic.value = selectedSsid gatt.writeCharacteristic(characteristic) } બ୒͞ΕͨSSIDΛॻ͖ࠐΉ
47. onClick { val characteristic = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(SSID_CHARACTERISTIC) requireNotNull(characteristic) characteristic.value = selectedSsid gatt.writeCharacteristic(characteristic) } બ୒͞ΕͨSSIDΛॻ͖ࠐΉ
48. override fun onCharacteristicWrite( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int ) { when (characteristic.uuid) { SSID_CHARACTERISTIC -> { val characteristic = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(PASSWORD_CHARACTERISTIC) requireNotNull(characteristic) characteristic.value = password gatt.writeCharacteristic(characteristic) } PASSWORD_CHARACTERISTIC -> { … } } } SSIDͷॻ͖ࠐΈ׬ྃΛ଴ͭ
49. override fun onCharacteristicWrite( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int ) { when (characteristic.uuid) { SSID_CHARACTERISTIC -> { val characteristic = gatt.getService(CONFIGURATION_SERVICE) ?.getCharacteristic(PASSWORD_CHARACTERISTIC) requireNotNull(characteristic) characteristic.value = password gatt.writeCharacteristic(characteristic) } PASSWORD_CHARACTERISTIC -> { … } } } PASSWORDΛॻ͖ࠐΉ
50. override fun onCharacteristicWrite( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int ) { when (characteristic.uuid) { SSID_CHARACTERISTIC -> { … } PASSWORD_CHARACTERISTIC -> { // PASSWORDॻ͖ࠐΈ׬ྃ // Զͨͪͷઓ͍͸·ͩ͜Ε͔Βͩ!!! // ૄ௨֬ೝͳΓͳΜͳΓͷ໋ྩ΁ଓ͘… } } } PASSWORDॻ͖ࠐΈ׬ྃΛ଴ͭ
51. override fun onCharacteristicWrite( gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int ) { when (characteristic.uuid) { SSID_CHARACTERISTIC -> { … } PASSWORD_CHARACTERISTIC -> { // PASSWORDॻ͖ࠐΈ׬ྃ // Զͨͪͷઓ͍͸·ͩ͜Ε͔Βͩ!!! // ૄ௨֬ೝͳΓͳΜͳΓͷ໋ྩ΁ଓ͘… } } } PASSWORDॻ͖ࠐΈ׬ྃΛ଴ͭ
52. ແཧʔ!!
53. Catlog΋࠷ॳ͸͜Μͳײ͡ͷίʔυͩͬͨ ͳͥ͜ΜͳίʔϧόοΫ஍ࠈʹ…
54. Catlog΋࠷ॳ͸͜Μͳײ͡ͷίʔυͩͬͨ onCharacteristicWriteͱ͔onDescriptorWriteͱ ͔ͷதͰ࣍ͷ໋ྩ΍ͬͯΔ͚ͲͳΜͰ…?
55. Catlog΋࠷ॳ͸͜Μͳײ͡ͷίʔυͩͬͨ Ұؾʹ໋ྩ͢ΓΌ͑͑΍Μ
56. Catlog΋࠷ॳ͸͜Μͳײ͡ͷίʔυͩͬͨ ͳΔ΄ͲͶɺͳΜ໋͔ྩͨ͠Βɺͦͷ݁Ռ͕ฦͬ ͯ͘Δ·Ͱ͸࣍ͷ໋ྩ͸Ͱ͖ͳ͍ͷ͔ɻ
57. Catlog΋࠷ॳ͸͜Μͳײ͡ͷίʔυͩͬͨ ͔ͩΒ͜Μͳ͜ͱʹ…
58. !
59. CoroutineͱFlowͰ͍͍ ײ͡ʹͰ͖ΔͷͰ͸?
60. Catlog΋࠷ॳ͸͜Μͳײ͡ͷίʔυͩͬͨ CoroutineͰॻ͚ΔΑ͏ʹ͢Ε͹ɺ໋ྩͩͨ͠Β໋ ྩͷ׬ྃΛawait͢Δͬͯ͜ͱ͕Ͱ͖ͦ͏ͳ༧ײ
61. Catlog΋࠷ॳ͸͜Μͳײ͡ͷίʔυͩͬͨ “Ұؾʹ໋ྩ͢ΓΌ͑͑΍Μ” Λίʔυͷݟͨ໨্͸࣮ݱͰ͖ͦ͏ͩ
63. BLE x Coroutine x Flow
64. ‣ BLEؔ࿈ͷAPIΛCoroutine΍FlowͰwrap͢Δ ‣ BluetoothDeviceͱͷ௨৴Λ୲͏BluetoothClientΫϥεΛ࣮૷͢Δ ‣ ֤eventΛawait͢Δؔ਺Λఏڙ͢Δ ུ֓
65. ‣ sealed interfaceΛ࢖ͬͯBluetoothGattCallbackͷ֤ؔ਺ʹରԠ͢ Δdata classΛఆٛ͢Δ ‣ લड़ͷdata classΛFlowͰแΜͰฦ֦͢ுؔ਺Λ࣮૷͢Δ ‣ RxBindingͱ͔CorbindͰ΍ΒΕͯΔख๏ BluetoothDevice#connectGatt
66. sealed interface BluetoothGattEvent { val gatt: BluetoothGatt data class ConnectionStateChange( override val gatt: BluetoothGatt, val status: Int, val newState: Int ) : BluetoothGattEvent data class ServicesDiscovered( override val gatt: BluetoothGatt, val status: Int ) : BluetoothGattEvent // ུ } BluetoothDevice#connectGatt
67. fun BluetoothDevice.connectGatt(context: Context, autoConnect: Boolean) = channelFlow { val gatt = connectGatt(context, autoConnect, object : BluetoothGattCallback(){ override fun onConnectionStateChange( gatt: BluetoothGatt, status: Int, newState: Int ) { trySend(BluetoothGattEvent.ConnectionStateChange(gatt, status, newState)) } override fun onServicesDiscovered( gatt: BluetoothGatt, status: Int ) { trySend(BluetoothGattEvent.ServicesDiscovered(gatt, status)) } // ུ }) } BluetoothDevice#connectGatt
68. fun BluetoothDevice.connectGatt(context: Context, autoConnect: Boolean) = channelFlow { // ུ awaitClose { gatt.disconnect() gatt.close() } } BluetoothDevice#connectGatt
69. class BluetoothClient( private val context: Context, private val device: BluetoothDevice ) { private val gattEvent = MutableStateFlow<BluetoothGattEvent?>(null) private lateinit var gatt: BluetoothGatt // ུ } BluetoothClient
70. class BluetoothClient( private val context: Context, private val device: BluetoothDevice ) { private val gattEvent = MutableStateFlow<BluetoothGattEvent?>(null) private lateinit var gatt: BluetoothGatt // ུ } BluetoothClient
71. class BluetoothClient( private val context: Context, private val device: BluetoothDevice ) { private val gattEvent = MutableStateFlow<BluetoothGattEvent?>(null) private lateinit var gatt: BluetoothGatt // ུ } BluetoothClient
72. fun connect(autoConnect: Boolean, coroutineScope: CoroutineScope) { device.connectGatt(context, autoConnect) .onEach { gatt = it.gatt gattEvent.value = it } .launchIn(coroutineScope) } BluetoothClient#connect
73. fun connect(autoConnect: Boolean, coroutineScope: CoroutineScope) { device.connectGatt(context, autoConnect) .onEach { gatt = it.gatt gattEvent.value = it } .launchIn(coroutineScope) } BluetoothClient#connect
74. suspend fun awaitConnected() { if (connectionState == BluetoothProfile.STATE_CONNECTED) return gattEvent.first { it is BluetoothGattEvent.ConnectionStateChange && it.newState == BluetoothProfile.STATE_CONNECTED } } CONNECTEDΛawaitͰ͖Δ
75. suspend fun awaitConnected() { if (connectionState == BluetoothProfile.STATE_CONNECTED) return gattEvent.first { it is BluetoothGattEvent.ConnectionStateChange && it.newState == BluetoothProfile.STATE_CONNECTED } } CONNECTEDΛawaitͰ͖Δ ͜ͷsuspend functionΛݺΜͩCoroutine͸ ͜ͷ৚͕݅ຬͨ͞ΕΔ·Ͱதஅ͞ΕΔ
76. suspend fun awaitServicesDiscovered() { gattEvent .first { it is BluetoothGattEvent.ServicesDiscovered } } suspend fun awaitCharacteristicWritten(characteristicUuid: UUID) { gattEvent .first { it is BluetoothGattEvent.CharacteristicWrite && it.characteristic.uuid == characteristicUuid } } ֤event·Ͱawait͢Δ͜ͱ΋Ͱ͖Δ
77. bleClient.run { connect(false, coroutineScope) awaitConnected() discoverServices() awaitServicesDiscovered() setNotificationEnabled( CONFIGURATION_SERVICE, FOUND_SSID_CHARACTERISTIC, true ) awaitNotificationEnabled() observeNotification(FOUND_SSID_CHARACTERISTIC) .onEach { appendSsidToList(it.characteristic.value) } .launchIn(coroutineScope) writeCharacteristic( CONFIGURATION_SERVICE, REQUEST_SEARCH_SSID_CHARACTERISTIC, flag ) … σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
78. bleClient.run { connect(false, coroutineScope) awaitConnected() discoverServices() awaitServicesDiscovered() setNotificationEnabled( CONFIGURATION_SERVICE, FOUND_SSID_CHARACTERISTIC, true ) awaitNotificationEnabled() observeNotification(FOUND_SSID_CHARACTERISTIC) .onEach { appendSsidToList(it.characteristic.value) } .launchIn(coroutineScope) writeCharacteristic( CONFIGURATION_SERVICE, REQUEST_SEARCH_SSID_CHARACTERISTIC, flag ) } σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
79. bleClient.run { connect(false, coroutineScope) awaitConnected() discoverServices() awaitServicesDiscovered() setNotificationEnabled( CONFIGURATION_SERVICE, FOUND_SSID_CHARACTERISTIC, true ) awaitNotificationEnabled() observeNotification(FOUND_SSID_CHARACTERISTIC) .onEach { appendSsidToList(it.characteristic.value) } .launchIn(coroutineScope) writeCharacteristic( CONFIGURATION_SERVICE, REQUEST_SEARCH_SSID_CHARACTERISTIC, flag ) } σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
80. bleClient.run { connect(false, coroutineScope) awaitConnected() discoverServices() awaitServicesDiscovered() setNotificationEnabled( CONFIGURATION_SERVICE, FOUND_SSID_CHARACTERISTIC, true ) awaitNotificationEnabled() observeNotification(FOUND_SSID_CHARACTERISTIC) .onEach { appendSsidToList(it.characteristic.value) } .launchIn(coroutineScope) writeCharacteristic( CONFIGURATION_SERVICE, REQUEST_SEARCH_SSID_CHARACTERISTIC, flag ) } σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
81. bleClient.run { connect(false, coroutineScope) awaitConnected() discoverServices() awaitServicesDiscovered() setNotificationEnabled( CONFIGURATION_SERVICE, FOUND_SSID_CHARACTERISTIC, true ) awaitNotificationEnabled() observeNotification(FOUND_SSID_CHARACTERISTIC) .onEach { appendSsidToList(it.characteristic.value) } .launchIn(coroutineScope) writeCharacteristic( CONFIGURATION_SERVICE, REQUEST_SEARCH_SSID_CHARACTERISTIC, flag ) } σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
83. ͦΜͳʹ؁͘ͳ͍BLE
84. ։ൃऀʹݫ͍͠BLE͞Μ BLE͏Μͱ΋͢Μͱ΋͍Θͳ͘ͳͬͨΜ͚ͩͲ…
85. ‣ BluetoothͷAPI͕௜໧ΩϝΔࣄ͕͋Δ ‣ ୺຤ͷઃఆͰBluetoothΛҰ୴OFFʹͯ͠࠶౓ONʹ… ‣ ͦΕͰ΋࣏Βͳ͔ͬͨΒ୺຤Λ࠶ىಈͰ… ‣ ͢Μ·ͤΜ… ׬શʹ௜໧͢ΔBLE͞Μ
86. ‣ ϢʔβʔͷखݩͰͲΜͳෆ۩߹͕ى͖͔ͨ ௐࠪͰ͖ΔΑ͏ʹͨ͠΄͏͕ྑͦ͞͏ɻ ‣ Crashlytics ‣ Ϋϥογϡൃੜ࣌ʹͦͷखલͰى͖͍ͯͨϩά͸ݟΕΔ ‣ ΫϥογϡΛ൐͏ෆ۩߹͸͋·Γͳ͍ͷͰɺ༗༻Ͱ͸ͳ͍ ‣ Bugfender ‣ Logcat΁ͷग़ྗ͢΂ͯɺ΋͘͠͸બఆͨ͠ϩάΛऩूͰ͖Δ ‣ Bugfenderศརͦ͏(ݕ౼த) ෆ໌ͳෆ۩߹ʹରԠ͢ΔͨΊʹ
88. BLEΛ࢖ͬͨΞϓϦ ͱ͍ͬͯ΋BLEͷϢʔεέʔε͸༷ʑ
89. Catlog Series BLE BLE HTTP ઃఆ ϩά ϩ ά BLE HTTP ઃఆ ϩά
90. Catlog Series BLE BLE HTTP ઃఆ ϩά ϩ ά BLE HTTP ઃఆ ϩά
91. SwitchBot & SwitchBot Hub (͸ͨͿΜ͜Μͳײ͡) BLE ઃఆ ࡞ಈ໋ྩ HTTP SwitchBotͷ࡞ಈ໋ྩ SwitchBotͷ࡞ಈ໋ྩ BLE ࡞ಈ໋ྩ HTTP?
92. SwitchBot & SwitchBot Hub (͸ͨͿΜ͜Μͳײ͡) BLE ઃఆ ࡞ಈ໋ྩ HTTP SwitchBotͷ࡞ಈ໋ྩ SwitchBotͷ࡞ಈ໋ྩ BLE ࡞ಈ໋ྩ HTTP?
93. ‣ Catlog͸σόΠεͷઃఆͷΈBLEΛ࢖͍ͬͯΔ ‣ ઃఆը໘͕ੜ͖͍ͯΔؒͷΈCatlogͱίωΫγϣϯΛு͍ͬͯΕ͹ ͍͍ ‣ ઃఆը໘಺ͰconnectionΛone-shotͰ࢖͍ࣺͯΒΕΔ ‣ SwitchBot͸ઃఆ͓Αͼ࡞ಈ໋ྩʹBLEΛ࢖͍ͬͯΔ ‣ ΞϓϦ͕ىಈத͸ৗ࣌SwitchBotͱίωΫγϣϯΛுΓɺ͍ͭͰ΋ SwitchBotʹରͯ͠BLEΛ௨໋ͯ͠ྩͰ͖ΔΑ͏ʹ͍ͯ͠Δ(ͱ༧૝) BLEͷϢʔεέʔε͸ΞϓϦʹΑ༷ͬͯʑ
94. ‣ Catlog͸FragmentͷlifecycleͷதͰBLEΛ࢖͑Ε͹͍͍ ‣ SwitchBot͸ɺ1Activityߏ੒ͳΒActivityͷlifecycleͷதɺͦ͏Ͱͳ ͍ͳΒServiceͷதͰBLEΛ࢖͏ඞཁ͕͋Γͦ͏ BLEͷϢʔεέʔε͸ΞϓϦʹΑ༷ͬͯʑ
95. ‣ Catlog͸FragmentͷlifecycleͷதͰBLEΛ࢖͑Ε͹͍͍ ‣ SwitchBot͸ɺ1Activityߏ੒ͳΒActivityͷlifecycleͷதɺͦ͏Ͱͳ ͍ͳΒServiceͷதͰBLEΛ࢖͏ඞཁ͕͋Γͦ͏ ‣ ΞϓϦʹΑͬͯBLE·ΘΓͷઃܭ͸มΘΓͦ͏ BLEͷϢʔεέʔε͸ΞϓϦʹΑ༷ͬͯʑ
96. Ϣʔεέʔεʹ߹Θͤͯ ࠷ߴͷBLEΞϓϦΛ࡞Ζ͏
97. Thank you