Android - List Connected Bluetooth Devices

Question

I have an application that will listen for voice input through bluetooth if available and if not available then will read through the phone microphone. I can't seem to find a way to check if their are any bluetooth devices already connected (not just paired). Any suggestions?

Have you got the solution for this. I am searching for same, Please provide answer. — Gangadhar Nimballi, Nov 16 '15 at 10:13

score 3 · Answer 1 · answered Jul 26 '17 at 12:47

3

The following worked for me (API >= 18):

final BluetoothManager bluetoothManager = (BluetoothManager)getSystemService(Context.BLUETOOTH_SERVICE);
List<BluetoothDevice> gattServerConnectedDevices = bluetoothManager.getConnectedDevices(BluetoothProfile.GATT_SERVER);
for (BluetoothDevice device : gattServerConnectedDevices) {
    Log.d("Tag", "Found connected device: " + device.getAddress());
}

answered Jul 26 '17 at 12:47

Adam Johns

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This is only for gatt devices. i need headphone, bluetooth headsets, etc. – user2812299 Jul 27 '17 at 15:09
I can get my ble mouse from this api, it works for me. – Lai Lee Oct 14 '20 at 04:41

score 1 · Answer 2 · answered Feb 27 '14 at 20:01

1

Try this method, API 18 though.

https://developer.android.com/reference/android/bluetooth/BluetoothManager.html#getConnectedDevices(int)

answered Feb 27 '14 at 20:01

pelotasplus

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Can you provide an example please. Everything I have tried uses broadcast receivers, but I want to query in onCreate method. – user2812299 Feb 27 '14 at 21:58
1

FYI, this only works for BluetoothProfile.GATT and BluetoothProfile.GATT_SERVER. – swooby May 17 '16 at 05:00

score 1 · Answer 3 · answered May 22 '19 at 19:24

It's possible to list connected headset devices via BluethoothHeadset service

   btAdapter.getProfileProxy(context, object : BluetoothProfile.ServiceListener {
            override fun onServiceDisconnected(p0: Int) {
                //
            }

            override fun onServiceConnected(p0: Int, headset: BluetoothProfile?) {
                headset?.connectedDevices?.forEach {
                    Timber.d("${it.name} ${it.address}")
                }
            }
        }, BluetoothProfile.HEADSET)

Android - List Connected Bluetooth Devices

3 Answers3

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