You can’t. The emulator does not support Bluetooth, as mentioned in the SDK’s docs and several other places. Android emulator does not have bluetooth capabilities“.
You can only use real devices.
Emulator Limitations
The functional limitations of the emulator include:
- No support for placing or receiving actual phone calls. However, You
can simulate phone calls (placed and received) through the emulator
console - No support for USB
- No support for device-attached headphones
- No support for determining SD card insert/eject
- No support for WiFi, Bluetooth, NFC
Refer to the documentation