Empty Bluetooth paired device list when using Bluetoothclient.AddressandNames

[nutanjam]

I have an app which uses Bluetoothclient.AddressandNames in a listpicker's beforepicking event to display the list of paired bluetooth devices. The app was working earlier and showing the paired devices but today when I recompiled the app on ai2.appinventor instance, the devices are not shown anymore. When I compiled the same app on code.appinventor instance , the devices are displayed correctly.
I observed that the builds on both these instances are from different dates.

[Taifun]

(Canned Response)
These blocks can be dragged into your Blocks Editor to request permission(s) for Bluetooth scanning and connecting. All three parts are needed.

Thanks to @Anke for the original code.
My changes include

• use of the Screen1 permission blocks to avoid the possibility of a typo
• using a TinyDB tag particular to BT permissions and only for BT permissions.

by @ABG

[nutanjam]

Thanks Taifun. I was asking for BLUETOOTH_CONNECT permission. I will try these blocks and let you know.
Only thing I am not getting is what are the numbers after n2.1,... in the textbox in apiLevel procedure.

Regards,
Nutan

[ABG]

The API level conversion turns internal operating system level into a number usable in a math comparison block.

[Anke]

@nutanjam

I am not getting is what are the numbers after n2.1,... in the textbox in apiLevel procedure.

[nutanjam]

Thanks a lot Anke.
I have one more question. Can you please let me know what is the difference between comparing with api level and platform version number?
Instead of api level, If I compare as platform version number >= 12, that also works. Hence the question.
Regards,
Nutan

[Anke]

@nutanjam

Instead of api level, If I compare as platform version number >= 12, that also works.

No bluetooth detected

This doesn't work as many Android versions are NOT numbers (Android 5.0.x, Android 7.0.x etc. See also here: For example: [grafik]

No bluetooth detected

Right. With this they can come up with even version 14.5.34.2.45, it will work... [blocks - 2023-05-21T225408.142]

No bluetooth detected

Yes, but this only works because the orientation platform version (11) is a number in this case. So this method doesn't work if you want to request (for example) storage permissions for the ASD for devices with API < 19 (< Android 4.4). Or API 14 (Android 4.0.1 - 4.0.2).

We want / need a general solution and not only one that only works in this specific case. So either you use an extension (GetAPI) or do it the way I suggested.

[Patryk_F]

And remember to update this list in your apps when new android is released, otherwise it won't work on new android which is not in the list.

[nutanjam]

Thanks everyone for your help. The issue is resolved now.