How to check is app in foreground from service?

I need to show notification to user only if application is not in foreground. Here is my public class MyFirebaseMessagingService extends

FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        if(applicationInForeground()) {
            Map<String, String> data = remoteMessage.getData();
            sendNotification(data.get("title"), data.get("detail"));
        }

    }

need to implement applicationInForeground() method

You can control running app processes from android system service. Try this:

private boolean applicationInForeground() {
    ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningAppProcessInfo> services = activityManager.getRunningAppProcesses();
    boolean isActivityFound = false;

    if (services.get(0).processName
            .equalsIgnoreCase(getPackageName()) && services.get(0).importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
        isActivityFound = true;
    }

    return isActivityFound;
}

Good luck.