Use valid server check from settings

import static android.Manifest.permission.ACCESS_FINE_LOCATION;

import static android.Manifest.permission.POST_NOTIFICATIONS;

import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;

import static net.fabiszewski.ulogger.SettingsFragment.isValidServerSetup;

import android.annotation.SuppressLint;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.content.pm.PackageManager;

import android.content.pm.PermissionInfo;

import android.location.LocationManager;

import androidx.annotation.RequiresApi;

import androidx.appcompat.widget.SwitchCompat;

import androidx.fragment.app.Fragment;

import androidx.preference.PreferenceManager;

import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

import org.json.JSONException;

    }

    private void checkServer() {

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(requireContext());

        String host = prefs.getString(SettingsActivity.KEY_HOST, "").replaceAll("/+$", "");

        boolean isValidServerSetup = isValidServerSetup(requireContext());

        serverReachableDetails.setText("");

        validAccountDetails.setText("");

        setupServerSwitch(serverConfiguredSwitch, !host.isEmpty());

        setupServerSwitch(serverConfiguredSwitch, isValidServerSetup);

        setupServerSwitch(serverReachableSwitch, false);

        setupServerSwitch(validAccountSwitch, false);

        if (!host.isEmpty()) {

        if (isValidServerSetup) {

            setRefreshing(true);

            final Handler handler = new Handler(Looper.getMainLooper());

     * @param context Context

     * @return boolean True if set

     */

    @SuppressWarnings("BooleanMethodIsAlwaysInverted")

    public static boolean isValidServerSetup(@NonNull Context context) {

        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);

        final String host = prefs.getString(KEY_HOST, null);