com.lauszus.launchpadflightcontrollerandroid.app.MapFragment.java Source code

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Here is the source code for com.lauszus.launchpadflightcontrollerandroid.app.MapFragment.java

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/*******************************************************************************
 * Copyright (C) 2015 Kristian Sloth Lauszus. All rights reserved.
 *
 * This software may be distributed and modified under the terms of the GNU
 * General Public License version 2 (GPL2) as published by the Free Software
 * Foundation and appearing in the file GPL2.TXT included in the packaging of
 * this file. Please note that GPL2 Section 2[b] requires that all works based
 * on this software must also be made publicly available under the terms of
 * the GPL2 ("Copyleft").
 *
 * Contact information
 * -------------------
 *
 * Kristian Sloth Lauszus
 * Web      :  http://www.lauszus.com
 * e-mail   :  lauszus@gmail.com
 ******************************************************************************/

package com.lauszus.launchpadflightcontrollerandroid.app;

import android.Manifest;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationManager;
import android.support.v4.app.ActivityCompat;
import android.widget.Toast;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;

public class MapFragment extends SupportMapFragment {
    private GoogleMap mMap;

    private final int GPS_PERMISSIONS_REQUEST = 0;

    @Override
    public void onResume() {
        super.onResume();
        LocationManager locationManager = (LocationManager) getActivity()
                .getSystemService(Context.LOCATION_SERVICE);
        if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            new AlertDialog.Builder(getActivity())
                    .setMessage("Your GPS seems to be disabled, do you want to enable it?").setCancelable(false)
                    .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                        public void onClick(final DialogInterface dialog, final int id) {
                            startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
                        }
                    }).setNegativeButton("No", new DialogInterface.OnClickListener() {
                        public void onClick(final DialogInterface dialog, final int id) {
                            dialog.cancel();
                            Toast.makeText(getActivity(), "GPS must be on in order to use this application!",
                                    Toast.LENGTH_LONG).show();
                            getActivity().finish();
                        }
                    }).create().show();
        } else {
            setUpMapIfNeeded();
            if (ActivityCompat.checkSelfPermission(getActivity(),
                    Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
                Location location = locationManager
                        .getLastKnownLocation(locationManager.getBestProvider(new Criteria(), false));
                if (location != null) {
                    LatLng myLocation = new LatLng(location.getLatitude(), location.getLongitude());
                    mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(myLocation, 19.0f));
                }
            }
        }
    }

    private void enableMyLocationLayer() {
        if (ActivityCompat.checkSelfPermission(getActivity(),
                Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED)
            mMap.setMyLocationEnabled(true);
    }

    private void setUpMapIfNeeded() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (mMap == null) {
            mMap = getMap(); // Obtain the map
            // Check if we were successful in obtaining the map.
            if (mMap != null) {
                mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
                if (ActivityCompat.checkSelfPermission(getActivity(),
                        Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED)
                    enableMyLocationLayer();
                else
                    requestPermissions(new String[] { Manifest.permission.ACCESS_COARSE_LOCATION,
                            Manifest.permission.ACCESS_FINE_LOCATION }, GPS_PERMISSIONS_REQUEST);
                mMap.getUiSettings().setCompassEnabled(true);
                mMap.getUiSettings().setAllGesturesEnabled(true);
            } else {
                Toast.makeText(getActivity(), "Google Maps is not available!", Toast.LENGTH_LONG).show();
                getActivity().finish();
            }
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        switch (requestCode) {
        case GPS_PERMISSIONS_REQUEST: {
            // If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Permission was granted, yay!
                Toast.makeText(getActivity(), "Location permission granted", Toast.LENGTH_SHORT).show();
                enableMyLocationLayer();
            } else {
                // Permission denied, boo!
                Toast.makeText(getActivity(), "Location permission required!", Toast.LENGTH_LONG).show();
                getActivity().finish();
            }
        }
        }
    }
}