How to show heads up notification in Oreo or higher

Question

I think heads up notification disable in android 8.0 but android's built-in message have this feature even on running android 8.0 . I know how to show heads up notification lower than 8.0 device by setting vibration to notification. But vibration on notification running Oreo is deprecated. So i go and search in internet and someone says enabling setVibrationPattern to notification channel will works. But saddly this not works .

So here is my code .

Notification  builder = new NotificationCompat.Builder(MainActivity.this)
                            .setAutoCancel(true)
                            .setWhen(System.currentTimeMillis())
                            .setSmallIcon(R.drawable.ic_android_black_24dp)
                            .setChannelId(id)
                            .setPriority(Notification.PRIORITY_HIGH)
                            .setColor(setActionColor(counter))
                            .setColorized(true)
                            .setContentIntent(pendingIntent)
                            .build();

//Notification channel code.

NotificationChannel chan2 = new NotificationChannel(SECONDARY_CHANNEL,
                            getString(R.string.noti_channel_second), NotificationManager.IMPORTANCE_HIGH);
                    chan2.setLightColor(Color.BLUE);
                    chan2.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
                    manager.createNotificationChannel(chan2);
                    manager.notify(notificationID, builder);

Answer 1

Late Answer :- But i think its worth sharing. I was doing the same thing as above but Heads-up notifications won't shows in Oreo.

Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationManager notificationManager = 
        (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder notificationBuilder;

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    NotificationChannel notificationChannel = 
        new NotificationChannel("ch_nr", "CHART", NotificationManager.IMPORTANCE_HIGH);
    notificationChannel.setVibrationPattern(new long[]{300, 300, 300});

    if (defaultSoundUri != null) {
        AudioAttributes att = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                .build();
        notificationChannel.setSound(defaultSoundUri, att);
    }

    notificationManager.createNotificationChannel(notificationChannel);
    notificationBuilder = 
        new NotificationCompat.Builder(context, notificationChannel.getId());
}

Essential code is above . The problem was i was overriding build each time on device and the importance did not get change to HIGH . I did not understand this until i came across this document .

Importance levels have the following restrictions:

The importance level you assign will be the channel’s default. Users can change a channel’s importance level in Android Settings. Once you choose an importance level, you're limited in how you can change it: you may only lower the importance, and only if the user hasn't explicitly changed it.

Conclusion:- Completely uninstall previous build or Clear Data(not sure about this) before upgrading the importance for notification channel.

Answer 2

You can do this way.. this will work on every android version

private NotificationManager notifManager;
public void createNotification(String aMessage) {
    final int NOTIFY_ID = 1002;

    // There are hardcoding only for show it's just strings
    String name = "my_package_channel";
    String id = "my_package_channel_1"; // The user-visible name of the channel.
    String description = "my_package_first_channel"; // The user-visible description of the channel.

    Intent intent;
    PendingIntent pendingIntent;
    NotificationCompat.Builder builder;

    if (notifManager == null) {
        notifManager =
                (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        int importance = NotificationManager.IMPORTANCE_HIGH;
        NotificationChannel mChannel = notifManager.getNotificationChannel(id);
        if (mChannel == null) {
            mChannel = new NotificationChannel(id, name, importance);
            mChannel.setDescription(description);
            mChannel.enableVibration(true);
            mChannel.setLightColor(Color.GREEN);
            mChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
            notifManager.createNotificationChannel(mChannel);
        }
        builder = new NotificationCompat.Builder(this, id);

        intent = new Intent(this, MainActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

        builder.setContentTitle(aMessage)  // required
                .setSmallIcon(android.R.drawable.ic_popup_reminder) // required
                .setContentText(this.getString(R.string.app_name))  // required
                .setDefaults(Notification.DEFAULT_ALL)
                .setAutoCancel(true)
                .setContentIntent(pendingIntent)
                .setTicker(aMessage)
                .setVibrate(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
    } else {

        builder = new NotificationCompat.Builder(this);

        intent = new Intent(this, MainActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
        pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

        builder.setContentTitle(aMessage)                           // required
                .setSmallIcon(android.R.drawable.ic_popup_reminder) // required
                .setContentText(this.getString(R.string.app_name))  // required
                .setDefaults(Notification.DEFAULT_ALL)
                .setAutoCancel(true)
                .setContentIntent(pendingIntent)
                .setTicker(aMessage)
                .setVibrate(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400})
                .setPriority(Notification.PRIORITY_HIGH);
    } // else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

    Notification notification = builder.build();
    notifManager.notify(NOTIFY_ID, notification);
}

Answer 3

You also need to set the App notification setting in "Settings" to Urgent. A Heads up notification will not show up unless the User sets the App to urgent.

Answer 4

Heads up notifications works if you create Notification Channel and do something like this.

NotificationChannel chan2 = new NotificationChannel(SECONDARY_CHANNEL,
                getString(R.string.noti_channel_second), NotificationManager.IMPORTANCE_HIGH);
        chan2.setLightColor(Color.BLUE);
        chan2.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
        getManager().createNotificationChannel(chan2);