How to show Heads up notifications android

Question

How to get a heads up notification.With below code i can only see three dots on status bar and a notification in notification bar.

Intent intent = new Inten         


        

Answer 1

I was having the same problem, but I was using the newer NotificationCompat.Builder() call which requires a channel ID from a NotificationChannel.

The notification will only appear as a heads-up notification if the NotificationChannel is created with an importance value of NotificationManager.IMPORTANCE_HIGH:

NotificationChannel channel = new NotificationChannel("channel01", "name", 
     NotificationManager.IMPORTANCE_HIGH);   // for heads-up notifications
channel.setDescription("description");

// Register channel with system
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);

Show the heads-up notification:

Notification notification = new NotificationCompat.Builder(this, "channel01")
        .setSmallIcon(android.R.drawable.ic_dialog_info)
        .setContentTitle("Test")
        .setContentText("You see me!")
        .setDefaults(Notification.DEFAULT_ALL)
        .setPriority(NotificationCompat.PRIORITY_HIGH)   // heads-up
        .build();

NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(0, notification);

Answer 2

This code works for me:

NotificationCompat.Builder mBuilder =
                    new NotificationCompat.Builder(context)
                            .setSmallIcon(R.drawable.ic_media_play)
                            .setContentTitle("My notification")
                            .setContentText("Hello World!")
                            .setDefaults(Notification.DEFAULT_ALL)
                            .setPriority(Notification.PRIORITY_HIGH);