Bad argument to Connect : Operation connect cannot accept the arguments ["BT address"]

[Abdullah_Gulam_Rasoo]

Im trying to connect my phone to a nearby device(Wireless Headphone)... but the following error pops up.. I am not able to procure a solution.. I would be obliged if someone helped..

Attachment of my Code and real time screen error

[Anke]

Android version of your test device?

Try this:

Android permissions - BLE - Android 12

Try this one (tested on Android 9, 10, 11, 12): BLE_permissions_allAndroidVersions.aia (191.7 KB)

Blocks

<a class="lightbox" href="https://community.appinventor.mit.edu/uploads/default/original/3X/3/b/3be8b3651e22e16fc2775a7a67df39fc27dc19e0.png" data-download-href="https://community.appinventor.mit.edu/uploads/default/3be8b3651e22e16fc2775a7a67df39fc27dc19e0" title="grafik">[grafik]</a>

[ABG]

Are you sure about that .ElementsFromString assignment?

It forces an (unnecessary?) string conversion.

I am no BLE expert, but I would try just .Elements

Also, I am pretty sure when AI2 asks for an index, it wants a number (1,2,...) so .SelectionIndex might be more reasonable for an index than .Selection.