CODEWITHSUNDEEP
androidnotificationsfirebase-cloud-messaging
Damn Vegetables
Damn Vegetables

Reputation: 12464

FirebaseMessagingService show notification only when background

A FCM message can have one of data, notification or both. The notification that system generates using notification lacks functionalities, so I removed notification and sent data only. Therefore, I have to create notifications myself.

Creating and showing notifications was easy, but I do not want to show a notification when my app (specifically MainActivity, but it has only one activity, anyway) is already on the foreground. Most apps do not show notifications when they are on the foreground.

How do I know in onMessageReceived if my app is not on the foreground?

class MessagingService : FirebaseMessagingService()
{
    override fun onMessageReceived(remoteMessage: RemoteMessage?)
    {
        // Check if message contains a data payload.
        if (remoteMessage?.data?.isNotEmpty() == true)
        {
            //Log.d(TAG, "Message data payload: " + remoteMessage.data)

            ......

            if "Only when my app is on the background or not running?"
                sendNotification("Got a message.")
        }
    }

Upvotes: 1

Views: 823

Answers (1)

kubs
kubs

Reputation: 117

/**
 * Method checks if the app is in background or not
 *
 * @param context Application context
 * @return True/False
 */
public static boolean isAppIsInBackground(Context context) {
    boolean isInBackground = true;
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT_WATCH) {
        List<ActivityManager.RunningAppProcessInfo> runningProcesses = am.getRunningAppProcesses();
        for (ActivityManager.RunningAppProcessInfo processInfo : runningProcesses) {
            if (processInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
                for (String activeProcess : processInfo.pkgList) {
                    if (activeProcess.equals(context.getPackageName())) {
                        isInBackground = false;
                    }
                }
            }
        }
    } else {
        List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(1);
        ComponentName componentInfo = taskInfo.get(0).topActivity;
        if (componentInfo.getPackageName().equals(context.getPackageName())) {
            isInBackground = false;
        }
    }

    return isInBackground;
}

Upvotes: 2

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