如果您想要在创建通知渠道时，默认情况下发送声音或震动通知，请将以下代码添加到通知渠道构建器中：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    AudioAttributes attributes = new AudioAttributes.Builder()
            .setUsage(AudioAttributes.USAGE_NOTIFICATION)
            .build();

    NotificationChannel channel = new NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_DEFAULT);
    channel.setDescription(channelDescription);
    channel.enableLights(true);
    channel.setLightColor(Color.RED);
    channel.enableVibration(true);
    channel.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION), attributes);

    mNotificationManager.createNotificationChannel(channel);
} else {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(context, channelId)
            .setSmallIcon(R.drawable.ic_notification)
            .setContentTitle(notificationTitle)
            .setContentText(notificationBody)
            .setPriority(NotificationCompat.PRIORITY_DEFAULT);

    mNotificationManager.notify(notificationId, builder.build());
}

这将允许您使用默认的通知设置，并在 Android SDK 版本号为O或更高版本时启用声音和震动通知。