checks gps availability and show #AlertDialg when its not

LocationUtils.java

package util;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Build;
import android.provider.Settings;
import android.text.TextUtils;

import io.m7mdra.rickshaw.R;

/**
 * Created by allaeem on 3/27/2017.
 */

public class LocationUtils {

    public static final int REQUEST_CODE = 2131;

    public static boolean isLocationEnabled(Context context) {
        int locationMode;
        String locationProviders;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
            try {
                locationMode = Settings.Secure.getInt(context.getContentResolver(), Settings.Secure.LOCATION_MODE);
            } catch (Settings.SettingNotFoundException e) {
                e.printStackTrace();
                return false;
            }
            return locationMode != Settings.Secure.LOCATION_MODE_OFF;

        }else{
            locationProviders = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
            return !TextUtils.isEmpty(locationProviders);
        }

    }
    public static void openLocationSettings(final Activity activity) {
        AlertDialog.Builder alertDialog = new AlertDialog.Builder(activity);
        alertDialog.setTitle(R.string.gps_settings_title);
        alertDialog.setMessage(R.string.enable_gps);
        alertDialog.setPositiveButton(activity.getString(R.string.ok), new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                activity.startActivityForResult(intent, REQUEST_CODE);
                dialog.cancel();
            }
        });
        alertDialog.setNegativeButton(activity.getString(R.string.cancel), new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        alertDialog.show();
    }
}