要实现Android的BluetoothManager与多个设备配对，可以使用如下代码示例：

1. 获取BluetoothAdapter对象：

BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

2. 开启蓝牙：

if (!bluetoothAdapter.isEnabled()) {
    bluetoothAdapter.enable();
}

3. 扫描并获取设备列表：

bluetoothAdapter.startDiscovery();

// 创建BroadcastReceiver用于接收扫描结果
BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            // 获取扫描到的设备
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            // 进行配对
            if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
                device.createBond();
            }
        }
    }
};

// 注册BroadcastReceiver
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(receiver, filter);

4. 配对设备：

// 创建BroadcastReceiver用于接收配对结果
BroadcastReceiver pairingReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) {
            // 获取配对状态改变的设备
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            int bondState = device.getBondState();
            // 判断配对状态
            if (bondState == BluetoothDevice.BOND_BONDED) {
                // 配对成功
                // 进行其他操作
            } else if (bondState == BluetoothDevice.BOND_NONE) {
                // 配对失败
                // 进行其他操作
            }
        }
    }
};

// 注册BroadcastReceiver
IntentFilter pairingFilter = new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
registerReceiver(pairingReceiver, pairingFilter);

通过以上代码示例，可以实现Android的BluetoothManager与多个设备进行配对。