How can I know programmatically if a notification channel is enabled on Android O?

Question

Looking at the docs I can see methods for checking all the attributes of a notification channel, but I couldn't find a way to check if the channel itself is enabled or disabled.

Am I missing something?

Answer 1

Here is my full code:

public static boolean isNotificationChannelEnabled(@NonNull String groupId, @NonNull String... channelIds) {
    boolean appNotificationEnable = NotificationManagerCompat.from(AppContext.getContext()).areNotificationsEnabled();
    if (!appNotificationEnable) {
        return false;
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationManager manager = (NotificationManager) AppContext.getContext().getSystemService(Context.NOTIFICATION_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            List<NotificationChannelGroup> groupList = manager.getNotificationChannelGroups();
            for (NotificationChannelGroup group : groupList) {
                if (TextUtils.equals(group.getId(), groupId)) {
                    if (group.isBlocked()) {
                        return false;
                    }
                }
            }
        }

        for (String channelId : channelIds) {
            NotificationChannel channel = manager.getNotificationChannel(channelId);
            if (channel.getImportance() == NotificationManager.IMPORTANCE_NONE) {
                return false;
            }
        }
        return true;
    }

    return false;
}