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Added reverse geocoder

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This commit is contained in:
vjrj 2018-06-11 10:06:28 +02:00
parent ef257fcfe1
commit 662deb3086
4 changed files with 81 additions and 45 deletions
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65
lib/locationUtils.dart
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@ -3,28 +3,53 @@ import 'package:flutter/services.dart';
import 'dart:async';
import 'basicLocation.dart';
import 'package:flutter/material.dart';
import 'package:geocoder/geocoder.dart';
import 'globals.dart' as globals;
Future<BasicLocation> getUserLocation(GlobalKey<ScaffoldState> scaffoldKey) async {
// Platform messages may fail, so we use a try/catch PlatformException.
Future<BasicLocation> getUserLocation(
GlobalKey<ScaffoldState> scaffoldKey) async {
// Platform messages may fail, so we use a try/catch PlatformException.
try {
Location _location = new Location();
Map<String, double> location = await _location.getLocation;
// print('location $location');
// It seems that the lib fails with lat/lon values
var basicLocation = new BasicLocation(
lat: location['latitude'], lon: location['longitude']);
var address;
try {
Location _location = new Location();
Map<String, double> location = await _location.getLocation;
// print('location $location');
// It seems that the lib fails with lat/lon values
return new BasicLocation(
lat: location['latitude'], lon: location['longitude']);
} on PlatformException catch (e) {
if (e.code == 'PERMISSION_DENIED') {
scaffoldKey.currentState.showSnackBar(new SnackBar(
content: new Text('We don\'t have permission to get your location'),
));
} else if (e.code == 'PERMISSION_DENIED_NEVER_ASK') {
address = await getReverseLocation(basicLocation);
basicLocation.description = address;
} catch (e) {
try {
address = await getReverseLocation(basicLocation, true);
basicLocation.description = address;
} catch (e) {
print('We cannot reverse geolocate');
}
scaffoldKey.currentState.showSnackBar(new SnackBar(
content: new Text(
'I cannot get your current location. It\'s your ubication enabled?'),
));
return BasicLocation.noLocation;
}
return basicLocation;
} on PlatformException catch (e) {
if (e.code == 'PERMISSION_DENIED') {
scaffoldKey.currentState.showSnackBar(new SnackBar(
content: new Text('We don\'t have permission to get your location'),
));
} else if (e.code == 'PERMISSION_DENIED_NEVER_ASK') {}
scaffoldKey.currentState.showSnackBar(new SnackBar(
content: new Text(
'I cannot get your current location. It\'s your ubication enabled?'),
));
return BasicLocation.noLocation;
}
}
Future<String> getReverseLocation(BasicLocation loc,
[bool external = false]) async {
final coordinates = new Coordinates(loc.lat, loc.lon);
var geocoder = external ? Geocoder.google(globals.gmapKey) : Geocoder.local;
var addresses = await geocoder.findAddressesFromCoordinates(coordinates);
var first = addresses.first;
print("${first.featureName} : ${first.addressLine}");
return first.addressLine;
}