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I am trying to get a BluetoothHeadset proxy profile in Android.

I'm using the Kotlin code from the SDK documentation

In my activity I have a field for the bluetoothHeadset and the profile listener to set it:

    var bluetoothHeadset: BluetoothHeadset? = null
    private val profileListener = object : BluetoothProfile.ServiceListener {
        override fun onServiceConnected(profile: Int, proxy: BluetoothProfile) {
            Log.d(TAG, "profile is $profile")
            if (profile == BluetoothProfile.HEADSET) {
                bluetoothHeadset = proxy as BluetoothHeadset
        override fun onServiceDisconnected(profile: Int) {
            if (profile == BluetoothProfile.HEADSET) {
                bluetoothHeadset = null
In onCreate I get the bluetooth adapter and call getProxyProfile:
        val bluetoothAdapter: BluetoothAdapter? = BluetoothAdapter.getDefaultAdapter()
        if (bluetoothAdapter == null) {
            Log.e(TAG, "No Bluetooth Adapter.")
        } else {
            // Verify bluetooth is enabled
            if (!bluetoothAdapter.isEnabled) {
                val enableBtIntent = Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE)
                startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT)
            // Establish connection to the proxy.
            bluetoothAdapter.getProfileProxy(
                this@MainActivity,
                profileListener,
                BluetoothProfile.HEADSET
The weird thing is that bluetoothHeadset is never set.
The question can not connect to bluetooth headset in android covers situations in which getProxyProfile might fail which is indicated by it returning false. I've confirmed that in my case getProxyProfile is returning true and not false.
I've also confirmed in logcat that onServiceConnected is never called.
Why is it that getProxyProfile is returning true but the listener is never setting bluetoothHeadset?
        
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