HC- 05 Bluetooth Module

Hello I'm new here, So I did some basic app Led control using mti app inventor with Aurdino Uno, but for some reason. I click the LED Bluetooth the address doesn't appear I'm also done pairing hc05 to my android. I'm just following the yt vid perfectly. I'm not sure whether where did it go wrong. when i click the list picker button it supposed to show the address but instead it shows blank screen

Search the community to find topics regarding permissions needed to use bluetooth. Almost every day someone asks the same thing.

Thank you

(Canned Response ABG - Bluetooth non-BLE SCAN Permission Blocks)

The easiest solution, for immediate relief
(from @Barry_Meaker) ...

I had the same issue. The problem is your app does not have permission to see nearby devices. The solution is to give your app permission on your phone (no code changes in your app).

on your phone,

  • goto settings
  • search for your app
  • in App Info for your app select Permissions
  • change Nearby Devices from Not Allowed to Allowed
  • Done

By the way, the very first time you run the app, Android will ask if you want to grant the app this permission. If you say no, or ignore the pop-up, the permission will be set as Denied. Android will not ask again.

A more complex approach, for professional app development:

See Bluetooth liste of devices deosn't work anymore - #7 by Anke
Special note for Xiaomi devices:
I have an error with bluetooth on android 12, Xiaomi Poco X3 NFC - #20 by Patryk_F