Android Question B4A App runs fine with Android 5 will not run with Samsung phone running Android 10

fredeady said:

Update.. Found a reason why it didn't work.. The B4A app was just fine.
The problem was that the Location permission was not activated for the B4A app..
Once I gave the B4A app permission to use Location when the app was in use, it connects every time.

Samsung A11 and S10: Settings -> Apps -> BarkBlaster(or your B4A app) -> App Permissions -> Allow Location

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chardenal said:

Unfortunately, always the same result, Location permission was already enabled in my APP and always "Disconnect" message.

I have compared the log between B4A APP and BLE Scanner APP, and I can see that the UUID is not the same, maybe it is the reason?

Thanks

Log B4A vs BLE Scanner APP:

-------------------------B4A APP------------------------------------

connect() - device: D8:80:39:F1:20:33, auto: true
registerApp()
registerApp() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488
registerClient() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488
onClientRegistered() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488, clientIf=10
onClientRegistered() - status=0 clientIf=10
clientConnect() - clientIf =10, address=D8:80:39:F1:20:33, isDirect=false, transport = 0
btif_get_address_type: Device [d8:80:39:f1:20:33] address type 0
btif_get_device_type: Device [d8:80:39:f1:20:33] type 3
Unsupported transport for background connection
bta_gattc_init_bk_conn unable to connect to remote bd_addr:d8:80:39:f1:20:33
onConnected() - clientIf=10, connId=65535, address=D8:80:39:F1:20:33
onClientConnectionState() - status=133 clientIf=10 device=D8:80:39:F1:20:33
close()
unregisterApp() - mClientIf=10
unregisterClient() - clientIf=10
Disconnected



-------------------------BLE Scanner APP------------------------------------

connect() - device: D8:80:39:F1:20:33, auto: false
registerApp()
registerApp() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42
registerClient() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42
onClientRegistered() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42, clientIf=11
onClientRegistered() - status=0 clientIf=11
clientConnect() - clientIf =11, address=D8:80:39:F1:20:33, isDirect=true, transport = 2
btif_get_address_type: Device [d8:80:39:f1:20:33] address type 0
btif_get_device_type: Device [d8:80:39:f1:20:33] type 3
.....
Connected

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