Android Question Ble in Android10(B)

what module bluetooth are you using?

asking just in case, after testing with Android 6 your module bluetooth is fully unconnected from your Smartphone with Android 6 before testing with your Android 10?

In Android 6, The two event：Manager_DeviceFound() And Manager_Connected() is very OK。
In Android 10，The first step Manager_DeviceFound() is failed means Center can not find Ble device。

Download the latest BLE example and try it: https://www.b4x.com/android/forum/threads/ble-2-bluetooth-low-energy.59937/

Erel
I try the uper code again and again but the result is same: Cann't find Ble device. At the same time, the result is very beautiful to send/receive date test in android6(period 200ms/during 2 hours, no frame lost).

FWIW the BLE example works fine here with an Android 10 device.

Have you seen the COARSE permission dialog when you ran it?

No any response in android 10. I decide to give up,thanks a lot.
Public Sub StartScan
If manager.State <> manager.STATE_POWERED_ON Then
ToastMessageShow("请打开手机蓝牙...", False)
Else If Starter.rp.Check(Starter.rp.PERMISSION_ACCESS_COARSE_LOCATION) = False Then
ToastMessageShow("无定位许可...", False)
Else
manager.Scan2(Null, False)
End If
End Sub

Private Sub Manager_DeviceFound (Name As String, DeviceId As String, AdvertisingData As Map, RSSI As Double)
If Name="超靖界AEB" Then
ToastMessageShow("发现蓝牙设备 - "&Name, False)
manager.StopScan
manager.Connect2(DeviceId, False)
End If
End Sub

You also need to make sure your Location is turned on, on your device. I have noticed this on my Pixel, otherwise it wont pick up any BLE devices.

Probably the problem is caused by module itself. The IC factory demo app has the same appearence.