通知有时不会在 notify/write observable with RxAndroidBle 中调用
notification is sometimes not called in notify/write observable with RxAndroidBle
我目前正在使用 RxAndroidBle 将固件写入蓝牙设备。它的工作方式我必须将数据块（每块 580 字节）发送到一个 WRITE_CHARACTERISTIC_UUID 上的蓝牙设备，然后在 LISTEN_CHARACTERISTIC_UUID 上收听结果以检查蓝牙设备是否已成功确认大块。
理想情况下，我希望这个写入和通知链是一个操作，所以我正在使用来自类似堆栈溢出问题的代码（）：
private byte[] writeData(byte[] _payload) {
return mBleConnection
.flatMap( // when the connection is available...
rxBleConnection -> rxBleConnection.setupNotification(LISTEN_UUID), // ... setup the notification...
(rxBleConnection, apScanDataNotificationObservable) -> Observable.combineLatest( // ... when the notification is setup...
rxBleConnection.createNewLongWriteBuilder().setBytes(_payload).setCharacteristicUuid(WRITE_UUID).setMaxBatchSize(20).build(),
apScanDataNotificationObservable.first(), // ... and observe for the first notification on the AP_SCAN_DATA
(writtenBytes, responseBytes) -> responseBytes // ... when both will appear return just the response bytes...
)
)
.flatMap(observable -> observable) // ... flatMap the result as it is Observable<byte[]>...
.toBlocking()
.first(); // ... and finish after first response is received to cleanup notifications
}
问题是这只在前几次有效，之后写入操作成功但我从未收到通知。
这是停止前最后几个块的日志：
02-23 08:46:33.765 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_24] starting
02-23 08:46:33.772 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(182789785)
02-23 08:46:33.772 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(182789785)
02-23 08:46:33.773 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:33.777 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(22527736)
02-23 08:46:33.910 2864-2888/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:33.912 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(182789785)
02-23 08:46:33.912 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(22527736)
02-23 08:46:34.055 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:34.059 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(71420405)
02-23 08:46:34.063 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(22527736)
02-23 08:46:34.063 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(71420405)
02-23 08:46:34.067 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:34.204 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:34.207 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(71420405)
02-23 08:46:35.041 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
02-23 08:46:35.044 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_25] starting
02-23 08:46:35.044 2864-4250/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: false
02-23 08:46:35.048 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(183984640)
02-23 08:46:35.049 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(183984640)
02-23 08:46:35.053 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:35.060 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(71847163)
02-23 08:46:35.185 2864-3073/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:35.188 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(183984640)
02-23 08:46:35.189 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(71847163)
02-23 08:46:35.276 2864-2887/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:35.281 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(66222734)
02-23 08:46:35.283 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(71847163)
02-23 08:46:35.283 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(66222734)
02-23 08:46:35.287 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:35.441 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:35.447 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(66222734)
02-23 08:46:36.298 2864-2975/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
02-23 08:46:36.301 2864-4250/com.company.android.ble I/BLE_FW_WRITE: combine data for FW_CHUNK_25
02-23 08:46:36.303 2864-4250/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: false
02-23 08:46:36.303 2864-5256/com.company.android.ble D/SFlashRawWrite: msg length (total): 20, payload length: 3
02-23 08:46:36.303 2864-5256/com.company.android.ble D/SFlashRawWrite: msgId: -128
02-23 08:46:36.304 2864-5256/com.company.android.ble D/SFlashRawWrite: acked msg: 17 result: 1
02-23 08:46:36.304 2864-5256/com.company.android.ble I/BLE_TIMING: chunk 25 took 1260 ms
02-23 08:46:36.304 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_26] starting
02-23 08:46:36.313 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(248228237)
02-23 08:46:36.317 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:36.319 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(248228237)
02-23 08:46:36.321 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(164719036)
02-23 08:46:36.452 2864-2888/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:36.455 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(248228237)
02-23 08:46:36.456 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(164719036)
02-23 08:46:36.602 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:36.616 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(227542569)
02-23 08:46:36.623 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(164719036)
02-23 08:46:36.624 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(227542569)
02-23 08:46:36.632 2864-2975/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:36.897 2864-2975/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:36.902 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(227542569)
02-23 08:46:37.563 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
02-23 08:46:37.566 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_27] starting
02-23 08:46:37.567 2864-4250/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: false
02-23 08:46:37.569 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:37.572 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(150502697)
02-23 08:46:37.573 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(150502697)
02-23 08:46:37.574 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(128172508)
02-23 08:46:37.711 2864-2888/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:37.715 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(58981097)
02-23 08:46:37.730 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(150502697)
02-23 08:46:37.730 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(128172508)
02-23 08:46:37.871 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:37.876 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(128172508)
02-23 08:46:37.879 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(58981097)
02-23 08:46:37.891 2864-3073/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:38.126 2864-3073/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:38.128 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(58981097)
正如你在最后看到的，我没有得到
onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
最后。
注意：writeData 是 运行 在 Scheduler.io() 线程中，我正在使用库中的最新主提交 (https://github.com/Polidea/RxAndroidBle/commit/37ecef5c270c792bcb9193f6dd76b8711642e0ff)（因为我需要新的LongWriteBuilder)
有趣的是，如果我另外启动一个 "dummy" 不执行任何操作的通知 observable：
mBleConnection
.flatMap(rxBleConnection -> rxBleConnection.setupNotification(LISTEN_UUID))
.flatMap(notificationObservable -> notificationObservable)
.subscribe(Actions.empty(), Actions.empty())
以上可观察到的工作，我收到每条通知。
我怀疑我的通知设置有误，或者我在某处遗漏了延迟。
有两件事：
不能保证收到通知 - 指示为
似乎 Android OS 无法反复关闭和打开通知 - 从日志判断 BluetoothGattCallback.onCharacteristicChanged() 未被调用。
可能的解决方案是在第一个 writeData(byte[] _payload) 开始之前设置通知并同时传递 _payload 和 Observable<byte[]>，因此它看起来像 writeData(byte[] _payload, Observable<byte[]> listenCharacteristicNotifications)。然后你可以在 LISTEN_CHARACTERISTIC_UUID 上设置一次通知并在每次写入时使用它。
我目前正在使用 RxAndroidBle 将固件写入蓝牙设备。它的工作方式我必须将数据块（每块 580 字节）发送到一个 WRITE_CHARACTERISTIC_UUID 上的蓝牙设备，然后在 LISTEN_CHARACTERISTIC_UUID 上收听结果以检查蓝牙设备是否已成功确认大块。
理想情况下，我希望这个写入和通知链是一个操作，所以我正在使用来自类似堆栈溢出问题的代码（
private byte[] writeData(byte[] _payload) {
return mBleConnection
.flatMap( // when the connection is available...
rxBleConnection -> rxBleConnection.setupNotification(LISTEN_UUID), // ... setup the notification...
(rxBleConnection, apScanDataNotificationObservable) -> Observable.combineLatest( // ... when the notification is setup...
rxBleConnection.createNewLongWriteBuilder().setBytes(_payload).setCharacteristicUuid(WRITE_UUID).setMaxBatchSize(20).build(),
apScanDataNotificationObservable.first(), // ... and observe for the first notification on the AP_SCAN_DATA
(writtenBytes, responseBytes) -> responseBytes // ... when both will appear return just the response bytes...
)
)
.flatMap(observable -> observable) // ... flatMap the result as it is Observable<byte[]>...
.toBlocking()
.first(); // ... and finish after first response is received to cleanup notifications
}
问题是这只在前几次有效，之后写入操作成功但我从未收到通知。 这是停止前最后几个块的日志：
02-23 08:46:33.765 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_24] starting
02-23 08:46:33.772 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(182789785)
02-23 08:46:33.772 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(182789785)
02-23 08:46:33.773 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:33.777 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(22527736)
02-23 08:46:33.910 2864-2888/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:33.912 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(182789785)
02-23 08:46:33.912 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(22527736)
02-23 08:46:34.055 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:34.059 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(71420405)
02-23 08:46:34.063 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(22527736)
02-23 08:46:34.063 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(71420405)
02-23 08:46:34.067 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:34.204 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:34.207 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(71420405)
02-23 08:46:35.041 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
02-23 08:46:35.044 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_25] starting
02-23 08:46:35.044 2864-4250/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: false
02-23 08:46:35.048 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(183984640)
02-23 08:46:35.049 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(183984640)
02-23 08:46:35.053 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:35.060 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(71847163)
02-23 08:46:35.185 2864-3073/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:35.188 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(183984640)
02-23 08:46:35.189 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(71847163)
02-23 08:46:35.276 2864-2887/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:35.281 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(66222734)
02-23 08:46:35.283 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(71847163)
02-23 08:46:35.283 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(66222734)
02-23 08:46:35.287 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:35.441 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:35.447 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(66222734)
02-23 08:46:36.298 2864-2975/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
02-23 08:46:36.301 2864-4250/com.company.android.ble I/BLE_FW_WRITE: combine data for FW_CHUNK_25
02-23 08:46:36.303 2864-4250/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: false
02-23 08:46:36.303 2864-5256/com.company.android.ble D/SFlashRawWrite: msg length (total): 20, payload length: 3
02-23 08:46:36.303 2864-5256/com.company.android.ble D/SFlashRawWrite: msgId: -128
02-23 08:46:36.304 2864-5256/com.company.android.ble D/SFlashRawWrite: acked msg: 17 result: 1
02-23 08:46:36.304 2864-5256/com.company.android.ble I/BLE_TIMING: chunk 25 took 1260 ms
02-23 08:46:36.304 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_26] starting
02-23 08:46:36.313 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(248228237)
02-23 08:46:36.317 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:36.319 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(248228237)
02-23 08:46:36.321 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(164719036)
02-23 08:46:36.452 2864-2888/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:36.455 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(248228237)
02-23 08:46:36.456 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(164719036)
02-23 08:46:36.602 2864-3032/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:36.616 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(227542569)
02-23 08:46:36.623 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(164719036)
02-23 08:46:36.624 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(227542569)
02-23 08:46:36.632 2864-2975/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:36.897 2864-2975/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:36.902 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(227542569)
02-23 08:46:37.563 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
02-23 08:46:37.566 2864-5256/com.company.android.ble I/BLE_FW_WRITE: [FW_CHUNK_27] starting
02-23 08:46:37.567 2864-4250/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: false
02-23 08:46:37.569 2864-5256/com.company.android.ble D/BluetoothGatt: setCharacteristicNotification() - uuid: 69af0004-f994-3a57-749b-0e0aad3fca18 enable: true
02-23 08:46:37.572 2864-5256/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(150502697)
02-23 08:46:37.573 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(150502697)
02-23 08:46:37.574 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationDescriptorWrite(128172508)
02-23 08:46:37.711 2864-2888/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:37.715 2864-4250/com.company.android.ble D/RxBle#Radio: QUEUED RxBleRadioOperationCharacteristicLongWrite(58981097)
02-23 08:46:37.730 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(150502697)
02-23 08:46:37.730 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationDescriptorWrite(128172508)
02-23 08:46:37.871 2864-3093/com.company.android.ble D/RxBle#BluetoothGatt: onDescriptorWrite descriptor=00002902-0000-1000-8000-00805f9b34fb status=0
02-23 08:46:37.876 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationDescriptorWrite(128172508)
02-23 08:46:37.879 2864-3150/com.company.android.ble D/RxBle#Radio: STARTED RxBleRadioOperationCharacteristicLongWrite(58981097)
02-23 08:46:37.891 2864-3073/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
<more onCharacteristicWrites here, but omitted due to max post length>
02-23 08:46:38.126 2864-3073/com.company.android.ble D/RxBle#BluetoothGatt: onCharacteristicWrite characteristic=69af0003-f994-3a57-749b-0e0aad3fca18 status=0
02-23 08:46:38.128 2864-3150/com.company.android.ble D/RxBle#Radio: FINISHED RxBleRadioOperationCharacteristicLongWrite(58981097)
正如你在最后看到的，我没有得到
onCharacteristicChanged characteristic=69af0004-f994-3a57-749b-0e0aad3fca18
最后。
注意：writeData 是 运行 在 Scheduler.io() 线程中，我正在使用库中的最新主提交 (https://github.com/Polidea/RxAndroidBle/commit/37ecef5c270c792bcb9193f6dd76b8711642e0ff)（因为我需要新的LongWriteBuilder)
有趣的是，如果我另外启动一个 "dummy" 不执行任何操作的通知 observable：
mBleConnection
.flatMap(rxBleConnection -> rxBleConnection.setupNotification(LISTEN_UUID))
.flatMap(notificationObservable -> notificationObservable)
.subscribe(Actions.empty(), Actions.empty())
以上可观察到的工作，我收到每条通知。
我怀疑我的通知设置有误，或者我在某处遗漏了延迟。
有两件事：
不能保证收到通知 - 指示为
似乎 Android OS 无法反复关闭和打开通知 - 从日志判断
BluetoothGattCallback.onCharacteristicChanged()未被调用。
可能的解决方案是在第一个 writeData(byte[] _payload) 开始之前设置通知并同时传递 _payload 和 Observable<byte[]>，因此它看起来像 writeData(byte[] _payload, Observable<byte[]> listenCharacteristicNotifications)。然后你可以在 LISTEN_CHARACTERISTIC_UUID 上设置一次通知并在每次写入时使用它。