Android Question Bluetooth Discovery problem with Android 10

[menneaduplo]

Dear all,
I have a problem with Bluetooth discovery present in the tutorial https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/

The original project (without modifications. In the manigest there is targetSdkVersion = "26".) works up to Android 9 devices.

On Android 10 it doesn't work. Tested on Samsung A51.
StartDiscovery always returns false.
I think it's a BluetoothAdmin compatibility issue.

You can help me?
Thanks in advance

 

[Erel]

Works fine here. Do you see the permission dialog? Check whether location services are disabled on your device. It might be related.

 

[menneaduplo]

Yes the dialog box with the request for authorization appears (obviously only the first time).
Location services are active but it doesn't work the same.

 

[menneaduplo]

For now I have solved. Even if it is an Android 10 phone, targetSdkVersion <= 28 must be set.

 

[MbedAndroid]

got the same issue with a user. A51 samsung. only way to get it work is sdk28 for the moment.

 

[Erel]

Both examples were updated: https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/

And the much better: https://www.b4x.com/android/forum/threads/b4xpages-bluetooth-chat-example.119014/#content

 

[ema01]

Sorry to reply on an old thread, but FYI i am experiencing the same problem on my Xiaomi Redmi Note8T, since the update to MIUI 12 (which carries android 10).
Only way to get bluetooth to work was to set SDK Version to 28, so it seems it's not a problem on samsung phones only

 

[MbedAndroid]

possible. I'm running the app outside GooglePlayStore, so it wasnt a big issue for me. But for the future i hope someone has a solution.
For Erel: i'm using the latest update BT as shown in the examples.
Unfortunally i cannot check it, i dont own such a phone

 

[Erel]

You should never post in old threads. Always start your own thread.