When your application is opened from notification is it possible to get back to previous application from where it was opened? Android

Question

Is it possible to return to previous application from where your application is opened? For example I am in application A then I click on notification and open my application B then in my application BI click a button and I get back to application A? Currently I am trying to do that and the only way how I achieved is when my application is running in background or it only works for the first time.

I am using Flutter but these actions are executed in native Android code so I am probably missing something.

For getting back to previous app I am using: moveTaskToBack(true);

For creating a notification my code looks like this:

private void NotifyToAutofill(String uri, String url, NotificationManager notificationManager) {
        if (notificationManager == null || isNullOrWhitespace(uri)) {
            return;
        }

        Context context = getApplicationContext();
        Intent startIntent = new Intent(context, MainActivity.class);
        startIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

        startIntent.setAction(Intent.ACTION_RUN);

        startIntent.putExtra("uri", uri);
        startIntent.putExtra("url", url.contains("\u2022")
                || url.contains("\u2731") ? "" : url);
        String channelId = "channel-01";
        String channelName = "test";
        int importance = NotificationManager.IMPORTANCE_LOW;


        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            NotificationChannel mChannel = new NotificationChannel(
                    channelId, channelName, importance);
            notificationManager.createNotificationChannel(mChannel);
        }
        int color = 0x008000;
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, channelId)
                .setSmallIcon(R.drawable.ic_stat_name)
                .setContentTitle("Test Service")
                .setContentText("Tap to open application")
                .setAutoCancel(true);

        TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
        stackBuilder.addNextIntent(startIntent);
        PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(
                0,
                PendingIntent.FLAG_UPDATE_CURRENT
        );
        mBuilder.setContentIntent(resultPendingIntent);
        Notification notification = mBuilder.build();
        notification.flags = Notification.FLAG_AUTO_CANCEL;
        notificationManager.notify(AutoFillNotificationId, notification);

    }

Answer 1

Found the solution. My problem was that i was creating PendingIntent with

        stackBuilder.addNextIntent(startIntent);
        PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(
                0,
                PendingIntent.FLAG_UPDATE_CURRENT
        );

Everything worked as intented when I used:

        PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, startIntent, PendingIntent.FLAG_UPDATE_CURRENT);