How to get name of the connected Bluetooth device on android

问题

I'm trying to get the name of the device that is connected to the Android phone running android Oreo.

I was searching for an answer for the past two days, and none of them worked. suggestions mostly returning ioexception-read-failed-socket-might-closed-bluetooth error

The question is, is there any way to make Query that returns the connected Bluetooth device?

These are the links and suggestion which not working:

IOException: read failed, socket might closed - Bluetooth on Android 4.3
In Android, how to get the profile of a connected bluetooth device?
list connected bluetooth devices?

I can get information about the device that is previously paired and trying to make a connection or a device trying to pair to the device. what I want is the name or the connection state of the currently paired and connected device.

回答1:

here is the answer :

String name;
String address;
String threadName;
public void checkConnected()
{

       BluetoothAdapter.getDefaultAdapter().getProfileProxy(this, serviceListener, BluetoothProfile.HEADSET);
}

private BluetoothProfile.ServiceListener serviceListener = new BluetoothProfile.ServiceListener()
{
    @Override
    public void onServiceDisconnected(int profile)
    {

    }

    @Override
    public void onServiceConnected(int profile, BluetoothProfile proxy)
    {

        for (BluetoothDevice device : proxy.getConnectedDevices())
        {
            name = device.getName();
            address = device.getAddress();
            threadName = Thread.currentThread().getName();
            Toast.makeText(MainActivity.this, name+" " + address+ threadName,  Toast.LENGTH_SHORT).show();
            txtName.setText(name + " " + address);
            Log.i("onServiceConnected", "|" + device.getName() + " | " + device.getAddress() + " | " + proxy.getConnectionState(device) + "(connected = "
                    + BluetoothProfile.STATE_CONNECTED + ")");
        }

        BluetoothAdapter.getDefaultAdapter().closeProfileProxy(profile, proxy);
    }
};

回答2:

Have you tried this?

BluetoothServerSocket bluetoothServerSocket = bluetoothAdapter.listenUsingRfcommWithServiceRecord("abc", uuid);          
BluetoothSocket bluetoothSocket = bluetoothServerSocket.accept();
BluetoothDevice device = bluetoothSocket.getRemoteDevice();
String deviceName = device.getName();

来源：https://stackoverflow.com/questions/49225547/how-to-get-name-of-the-connected-bluetooth-device-on-android

标签

android

bluetooth