android获取真实蓝牙地址

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
 

public static String getBtAddressByReflection() {
        BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        Field field = null;
        try {
            field = BluetoothAdapter.class.getDeclaredField("mService");
            field.setAccessible(true);
            Object bluetoothManagerService = field.get(bluetoothAdapter);
            if (bluetoothManagerService == null) {
                return null;
            }
            Method method = bluetoothManagerService.getClass().getMethod("getAddress");
            if(method != null) {
                Object obj = method.invoke(bluetoothManagerService);
                if(obj != null) {
                    return obj.toString();
                }
            }
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }