VedantLtd has created GeoFirexFlutter branch with it's own use and convenience we don't cliam anything and do not promis anything.
FlutterGeoFirex is forked from 🔥GeoFlutterFire🔥 is an open-source library that allows you to store and query firestore documents based on their geographic location.
Demonstrates how to use the geoflutterfire plugin.
import 'package:flutter/material.dart';
import 'package:geoflutterfire/fluttergeofirex.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:geoflutterfire/src/point.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import 'package:rxdart/rxdart.dart';
void main() => runApp(MaterialApp(
title: 'Geo Flutter Fire example',
home: MyApp(),
debugShowCheckedModeBanner: false,
));
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
GoogleMapController _mapController;
TextEditingController _latitudeController, _longitudeController;
// firestore init
final _firestore = FirebaseFirestore.instance;
Geoflutterfire geo;
Stream<List<DocumentSnapshot>> stream;
var radius = BehaviorSubject(seedValue: 1.0);
@override
void initState() {
super.initState();
_latitudeController = TextEditingController();
_longitudeController = TextEditingController();
geo = Geoflutterfire();
GeoFirePoint center = geo.point(latitude: 12.960632, longitude: 77.641603);
stream = radius.switchMap((rad) {
var collectionReference = _firestore.collection('locations');
// .where('name', isEqualTo: 'darshan');
return geo
.collection(collectionRef: collectionReference)
.within(center: center, radius: rad, field: 'position');
/*
****Example to specify nested object****
var collectionReference = _firestore.collection('nestedLocations');
// .where('name', isEqualTo: 'darshan');
return geo.collection(collectionRef: collectionReference).within(
center: center, radius: rad, field: 'address.location.position');
*/
});
}
@override
void dispose() {
super.dispose();
radius.close();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('GeoFlutterFire'),
actions: <Widget>[
IconButton(
onPressed: _mapController == null
? null
: () {
_showHome();
},
icon: Icon(Icons.home),
)
],
),
body: Container(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Center(
child: Card(
elevation: 4,
margin: EdgeInsets.symmetric(vertical: 8),
child: SizedBox(
width: MediaQuery.of(context).size.width - 30,
height: MediaQuery.of(context).size.height * (1 / 3),
child: GoogleMap(
onMapCreated: _onMapCreated,
initialCameraPosition: const CameraPosition(
target: LatLng(12.960632, 77.641603),
zoom: 15.0,
),
),
),
),
),
Padding(
padding: const EdgeInsets.only(top: 8.0),
child: Slider(
min: 1,
max: 200,
divisions: 4,
value: _value,
label: _label,
activeColor: Colors.blue,
inactiveColor: Colors.blue.withOpacity(0.2),
onChanged: (double value) => changed(value),
),
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Container(
width: 100,
child: TextField(
controller: _latitudeController,
keyboardType: TextInputType.number,
textInputAction: TextInputAction.next,
decoration: InputDecoration(
labelText: 'lat',
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(8),
)),
),
),
Container(
width: 100,
child: TextField(
controller: _longitudeController,
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: 'lng',
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(8),
)),
),
),
MaterialButton(
color: Colors.blue,
onPressed: () {
double lat = double.parse(_latitudeController.text);
double lng = double.parse(_longitudeController.text);
_addPoint(lat, lng);
},
child: Text(
'ADD',
style: TextStyle(color: Colors.white),
),
)
],
),
MaterialButton(
color: Colors.amber,
child: Text(
'Add nested ',
style: TextStyle(color: Colors.white),
),
onPressed: () {
double lat = double.parse(_latitudeController.text);
double lng = double.parse(_longitudeController.text);
_addNestedPoint(lat, lng);
},
)
],
),
),
),
);
}
void _onMapCreated(GoogleMapController controller) {
setState(() {
_mapController = controller;
// _showHome();
//start listening after map is created
stream.listen((List<DocumentSnapshot> documentList) {
_updateMarkers(documentList);
});
});
}
void _showHome() {
_mapController.animateCamera(CameraUpdate.newCameraPosition(
const CameraPosition(
target: LatLng(12.960632, 77.641603),
zoom: 15.0,
),
));
}
void _addPoint(double lat, double lng) {
GeoFirePoint geoFirePoint = geo.point(latitude: lat, longitude: lng);
_firestore
.collection('locations')
.add({'name': 'random name', 'position': geoFirePoint.data}).then((_) {
print('added ${geoFirePoint.hash} successfully');
});
}
//example to add geoFirePoint inside nested object
void _addNestedPoint(double lat, double lng) {
GeoFirePoint geoFirePoint = geo.point(latitude: lat, longitude: lng);
_firestore.collection('nestedLocations').add({
'name': 'random name',
'address': {
'location': {'position': geoFirePoint.data}
}
}).then((_) {
print('added ${geoFirePoint.hash} successfully');
});
}
void _addMarker(double lat, double lng) {
var _marker = MarkerOptions(
position: LatLng(lat, lng),
icon: BitmapDescriptor.defaultMarkerWithHue(BitmapDescriptor.hueViolet),
);
setState(() {
_mapController.addMarker(_marker);
});
}
void _updateMarkers(List<DocumentSnapshot> documentList) {
documentList.forEach((DocumentSnapshot document) {
GeoPoint point = document.data['position']['geopoint'];
_addMarker(point.latitude, point.longitude);
});
}
double _value = 20.0;
String _label = '';
changed(value) {
setState(() {
_value = value;
_label = '${_value.toInt().toString()} kms';
_mapController.clearMarkers();
});
radius.add(value);
}
}