无法在Android O中构建NotificationCompat.Builder

// 创建通知渠道
String channelId = "my_channel_id";
CharSequence channelName = "My Channel";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(channelId, channelName, importance);

// 配置通知渠道
channel.setDescription("My Channel Description");
channel.enableVibration(true);
channel.setVibrationPattern(new long[]{100, 200, 300, 400, 500});

// 注册通知渠道
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);

// 创建通知
Notification.Builder builder = new Notification.Builder(this, channelId)
        .setSmallIcon(R.drawable.notification_icon)
        .setContentTitle("My Notification")
        .setContentText("This is a notification from my app")
        .setPriority(Notification.PRIORITY_DEFAULT);

// 发送通知
notificationManager.notify(notificationId, builder.build());