自定义通知未显示在锁定屏幕oreo上

Question

I am building Notification with remote views. I have given NotificationCompat.VISIBILITY_PUBLIC. but Notification is not showing on lock screen in Oreo.

My compileSdkVersion and targetSdkVersion is 27

 remoteViews = new RemoteViews(getPackageName(), R.layout.player_noti_layout);
 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel("default",
                getString(R.string.player_channel),
                NotificationManager.IMPORTANCE_LOW);
        channel.setDescription("Notification, Play/pause & Next/Prev");
        channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
        notificationmanager.createNotificationChannel(channel);
    }
    builder = new NotificationCompat.Builder(this, "default");
    Notification foregroundNote;
    // Set Icon
    foregroundNote = builder.setSmallIcon(R.drawable.ic_radio)
            .setTicker(getResources().getString(R.string.app_name))
            .setAutoCancel(false).setOngoing(true)
            .setContent(remoteViews)
            .setContentTitle("app name").setContentText("").setWhen(0).setPriority(NotificationCompat.PRIORITY_MAX)
                .setVisibility(NotificationCompat.VISIBILITY_PUBLIC) 
            .build();

Help appreciated!!! Thanks

Answer 1

尝试这个：

Notification.Builder.setVisibility(Notification.VISIBILITY_PUBLIC);

Answer 2

What I found working for me is in your notificationchannel you change the LockscreenVisibility to this

channel.LockscreenVisibility = NotificationVisibility.Public;

And in your NotificationCompat.Builder

.setVisibility(NotificationCompat.VisibilityPublic)

You do seem to be using a slightly different Syntax as for me I had to capitalise .SetVisibility
I hope this still helps.

PS: Keep in mind that your phone might not allow lockscreen notifications. This also happened to me where the code worked but my phone still didn't show the notifications. ;)