안드로이드 앱이 있습니다. 장치 연결에는 BLE (Bluetooth low energy)를 사용합니다. 잘 작동하지만 Android 10에서 문제가 있습니다. 이것은 내 코드입니다.
Hashtable<String, BluetoothDevice> myHtDevices;
....
BluetoothGatt gatt = myHtDevices.get(deviceId).connectGatt(this, false, gattCallback);onConnectionStateChange에서 다음을 얻습니다.
//public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState){
status= 133,
newStatus =0,이 문제는 Android Q에만 있습니다.
이 방법을 시도했지만 (add param TRANSPORT_LE) 작동하지 않습니다.
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.Q){
gatt = myHtDevices.get(deviceId).connectGatt(this, false, gattCallback,
BluetoothDevice.TRANSPORT_LE);
}
else {
gatt = myHtDevices.get(deviceId).connectGatt(this, false, gattCallback);
}정보 추가 :
BLE 스캔을 수행하여 myHtDevices를 얻습니다.
즉시 콜백합니다.
기기-Samsung 9
다음은 nRF Connect 로그입니다.
nRF Connect, 2020-03-24
Device (50:8C:B1:52:B7:8D)
V 19:37:26.248 Connecting to 50:8C:B1:52:B7:8D...
D 19:37:26.248 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 19:37:26.549 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
D 19:37:26.721 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2)
I 19:37:26.721 Connected to 50:8C:B1:52:B7:8D
V 19:37:26.745 Discovering services...
D 19:37:26.745 gatt.discoverServices()
I 19:37:26.872 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms)
D 19:37:27.768 [Callback] Services discovered with status: 0
I 19:37:27.768 Services discovered
V 19:37:27.814 Generic Access (0x1800)
- Device Name [R] (0x2A00)
- Appearance [R] (0x2A01)
- Peripheral Privacy Flag [R W] (0x2A02)
- Reconnection Address [W] (0x2A03)
- Peripheral Preferred Connection Parameters [R] (0x2A04)
Generic Attribute (0x1801)
- Service Changed [I] (0x2A05)
Client Characteristic Configuration (0x2902)
Device Information (0x180A)
- System ID [R] (0x2A23)
- Model Number String [R] (0x2A24)
- Serial Number String [R] (0x2A25)
- Firmware Revision String [R] (0x2A26)
- Hardware Revision String [R] (0x2A27)
- Software Revision String [R] (0x2A28)
- Manufacturer Name String [R] (0x2A29)
- IEEE 11073-20601 Regulatory Certification Data List [R] (0x2A2A)
- PnP ID [R] (0x2A50)
Unknown Service (6d95c372-02f0-4360-b0c0-432109c2b715)
- Unknown Characteristic [R W WNR] (105998c0-5e55-4de3-9fc9-1cf857231477)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (4f294974-26c0-43f6-aff9-aac109231e0d)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (51bb9208-7ed1-4c10-821a-be0ca1880c36)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (1767ac17-5aac-4692-93b0-1cb11b28fda6)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (3242c75b-0ce2-4560-9cc4-5190b2ee93d3)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (ad2192c7-c2d0-4c2a-b705-194602bf3c9e)
Characteristic User Description (0x2901)
Unknown Service (18b794e2-9679-4676-93e1-6a244758002d)
- Unknown Characteristic [R W WNR] (b8fe10c6-eba1-425d-849c-189e60f4dbc9)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (fd8c491c-e597-4e85-b831-5b4c37a3afc6)
Characteristic User Description (0x2901)
Unknown Service (bd31f74c-7f33-4b27-a2cf-6660b8d1efc2)
- Unknown Characteristic [R W WNR] (e91ed239-2e78-4aa9-8f5a-9701ecac4740)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (6e143748-ac59-4522-bdd0-46fd3e2101d7)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (b1e20318-8afc-47e3-3ac2-1eea626ce7a9)
Characteristic User Description (0x2901)
Unknown Service (baefe645-2991-4f24-9fb1-a8ea687c395a)
- Unknown Characteristic [R W WNR] (898542a6-55e6-4188-ac49-261d3e179640)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (06dc3129-99e3-45e6-8694-8845ce52fdda)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (d49aeb6d-a33c-4cf0-a06f-f7eca72bfe4f)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (583205af-5509-42ed-bdac-f95bb5c7bca3)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (fa54cb0c-ca4f-405d-b8e0-cf3c7d2f5ffe)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W WNR] (b1e20318-8afc-47e3-a32c-e1ae26c67e9a)
Characteristic User Description (0x2901)
D 19:37:27.815 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)
I 19:37:27.840 Connection parameters updated (interval: 48.75ms, latency: 0, timeout: 5000ms)조언이 있습니까?
