Java – Android Wear bundle notification and background image

I want to set up an android wear app that extends push notifications by stacking multiple notifications and then displaying different background images and actions on each stacked notification.

http://developer.android.com/training/wearables/notifications/stacks.html

This is what the stacked notifications look like, and then the cards in columns 2 and 3 will have unique background images.

I

can have the background images appear on individual notifications, but when I move to a stack of notifications, they don’t show.

Now does anyone know if this is feasible?

Sample code:

// Main Notification Object
        NotificationCompat.Builder wearNotificaiton = new NotificationCompat.Builder(this)
                .setDefaults(Notification.DEFAULT_ALL)
                .setSmallIcon(R.drawable.icon)
                .setWhen(System.currentTimeMillis())
                .setTicker(title)
                .setContentTitle(title)
                .setContentText(text);

wearNotificaiton.setGroup(GROUP_ALARM_KEY);

 Create second page
        Notification TrendPage =
                new NotificationCompat.Builder(this)
                        .setLargeIcon(trendImage)
                        .setStyle(new NotificationCompat.BigPictureStyle().bigPicture(trendImage))
                        .build();

 Create third page
        Notification ChartPage =
                new NotificationCompat.Builder(this)
                        .setLargeIcon(trendImage)
                        .setStyle(new NotificationCompat.BigPictureStyle().bigPicture(trendImage))
                        .setContentTitle("test title 1")
                        .build();

 wearable extender to add 2nd page and extend the main notification
        NotificationCompat.Builder extendedNotification =
                new NotificationCompat.WearableExtender()
                        .addPage(TrendPage)
                        .addPage(ChartPage)
                        .extend(wearNotificaiton)
                        .addAction(alertPageAction);

I

just played with this a little and I was afraid that it would be impossible to have different backgrounds in a group. It doesn’t matter if you only have one set of notifications or a set of notifications with pages – the entire stack has only one background.
If you disable setGroup rows, everything will work fine in the background – you will have a different background on the first page.

By the way. To set a background for a specific notification, simply use WearableExtender:

    .extend(new NotificationCompat.WearableExtender().setBackground(trendImage))

Instead of applying largeIcon or BigPictureStyle. But this certainly doesn’t solve your problem with the group.