Java 通知未显示在锁定屏幕上

我想在锁屏上显示通知，但无法使其工作

这是我的代码，我有

                  .setSmallIcon(R.drawable.deleteaccounticon)
                  .setContentTitle("My notification")
                  .setContentText("Much longer text that cannot fit one line...")
                  .setStyle(new NotificationCompat.BigTextStyle()
                          .bigText("Much longer text that cannot fit one line..."))
                  .setPriority(NotificationCompat.PRIORITY_HIGH);

          builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);

          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
              CharSequence name = "channel1";
              String description = "test";
              int importance = NotificationManager.IMPORTANCE_HIGH;
              NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
              channel.setDescription(description);
              // Register the channel with the system; you can't change the importance
              // or other notification behaviors after this


              NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
              notificationManager.createNotificationChannel(channel);
              notificationManager.notify(1,builder.build());
              channel.setLockscreenVisibility(VISIBILITY_PUBLIC);
      } 

通知未显示在锁定屏幕上。应用程序的设置允许在锁定屏幕上显示通知

有什么建议吗？

builder.setContinuous（true）

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使通知显示在锁屏上。

是否在设置中的锁屏启用中显示通知？？？