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Use native CLGeocoder in geocoding_darwin example #302

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1bb0834
Use native CLGeocoder in geocoding_darwin example.
Jun 25, 2026
7abbcf9
Changed to using extension on location
Jun 25, 2026
db9f0c9
moved down private function
Jun 25, 2026
330ef7a
updated changelog
Jun 25, 2026
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5 changes: 5 additions & 0 deletions geocoding_darwin/CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
## Unreleased

@mvanbeusekom mvanbeusekom Jun 26, 2026

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You can directly create a new version number and use it here (can be a patch fix, so I suggest using version 1.0.1).


- Updates the example app to demonstrate Darwin-specific native CLGeocoder
methods via `clgeocoder.dart`.

## 1.0.0

- Initial release of the geocoding_darwin package containing easy geocoding and
Expand Down
128 changes: 70 additions & 58 deletions geocoding_darwin/example/lib/main.dart
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
import 'package:baseflow_plugin_template/baseflow_plugin_template.dart';
import 'package:flutter/material.dart';
import 'package:geocoding_darwin/geocoding_darwin.dart';
import 'package:flutter/services.dart';
import 'package:geocoding_darwin/clgeocoder.dart' as cl;

/// Defines the main theme color.
final MaterialColor themeMaterialColor =
Expand Down Expand Up @@ -32,9 +33,7 @@ class _GeocodeWidgetState extends State<GeocodeWidget> {
final TextEditingController _longitudeController = TextEditingController();
String _output = '';
Locale? _locale;
final Geocoding _geocoding = GeocodingDarwinFactory().createGeocoding(
GeocodingDarwinCreationParams(),
);
final cl.CLGeocoder _geocoder = cl.CLGeocoder();

@override
void initState() {
Expand Down Expand Up @@ -119,30 +118,8 @@ class _GeocodeWidgetState extends State<GeocodeWidget> {
const Padding(padding: EdgeInsets.only(top: 8)),
Center(
child: ElevatedButton(
onPressed: _reverseGeocode,
child: const Text('Look up address'),
onPressed: () {
final latitude = double.parse(_latitudeController.text);
final longitude = double.parse(
_longitudeController.text,
);

_geocoding
.placemarkFromCoordinates(
latitude,
longitude,
locale: _locale,
)
.then((placemarks) {
var output = 'No results found.';
if (placemarks.isNotEmpty) {
output = placemarks[0].toDisplayString();
}

setState(() {
_output = output;
});
});
},
),
),
const Padding(padding: EdgeInsets.only(top: 32)),
Expand All @@ -156,37 +133,17 @@ class _GeocodeWidgetState extends State<GeocodeWidget> {
const Padding(padding: EdgeInsets.only(top: 8)),
Center(
child: ElevatedButton(
onPressed: _forwardGeocode,
child: const Text('Look up location'),
onPressed: () {
_geocoding
.locationFromAddress(_addressController.text)
.then((locations) {
var output = 'No results found.';
if (locations.isNotEmpty) {
output = locations[0].toDisplayString();
}

setState(() {
_output = output;
});
});
},
),
),
const Padding(padding: EdgeInsets.only(top: 8)),
Center(
child: ElevatedButton(
child: const Text('Is present'),
onPressed: () {
_geocoding.isPresent().then((isPresent) {
var output = isPresent
? "Geocoder is present"
: "Geocoder is not present";
setState(() {
_output = output;
});
});
setState(() => _output = 'Geocoder is present');
},
child: const Text('Is present'),
),
),
const Padding(padding: EdgeInsets.only(top: 8)),
Expand All @@ -206,16 +163,68 @@ class _GeocodeWidgetState extends State<GeocodeWidget> {
],
);
}

cl.Locale? _nativeLocale() {
return _locale != null ? cl.Locale(identifier: _locale!.toString()) : null;
}

Future<void> _reverseGeocode() async {
setState(() => _output = 'Loading...');

try {
final latitude = double.parse(_latitudeController.text);
final longitude = double.parse(_longitudeController.text);

final placemarks = await _geocoder.reverseGeocodeLocation(
cl.CLLocation(latitude: latitude, longitude: longitude),
_nativeLocale(),
);

var output = 'No results found.';
if (placemarks != null && placemarks.isNotEmpty) {
output = placemarks[0].toDisplayString();
}

setState(() => _output = output);
} on PlatformException catch (e) {
setState(() => _output = 'Error: ${e.message ?? e.code}');
} on FormatException catch (e) {
setState(() => _output = 'Error: ${e.message}');
}
}

Future<void> _forwardGeocode() async {
setState(() => _output = 'Loading...');

try {
final placemarks = await _geocoder.geocodeAddressString(
_addressController.text,
_nativeLocale(),
);

var output = 'No results found.';
if (placemarks != null && placemarks.isNotEmpty) {
final cl.CLLocation? location = placemarks[0].location;
output = location != null
? await location.toDisplayString()
: 'No location found.';
}

setState(() => _output = output);
} on PlatformException catch (e) {
setState(() => _output = 'Error: ${e.message ?? e.code}');
}
}
}

extension _PlacemarkExtensions on Placemark {
extension _CLPlacemarkExtensions on cl.CLPlacemark {
String toDisplayString() {
return '''
Name: $name,
Street: $street,
Street: ${postalAddress?.street ?? thoroughfare},
ISO Country Code: $isoCountryCode,
Country: $country,
Postal code: $postalCode,
Postal code: ${postalAddress?.postalCode ?? postalCode},
Administrative area: $administrativeArea,
Subadministrative area: $subAdministrativeArea,
Locality: $locality,
Expand All @@ -225,11 +234,14 @@ extension _PlacemarkExtensions on Placemark {
}
}

extension _LocationExtensions on Location {
String toDisplayString() {
extension _CLLocationExtensions on cl.CLLocation {
Future<String> toDisplayString() async {
final cl.CLLocationCoordinate2D coordinate = await getCoordinate();
final int timestamp = await getTimestamp();

return '''
Latitude: $latitude,
Longitude: $longitude,
Timestamp: $timestamp''';
Latitude: ${coordinate.latitude},
Longitude: ${coordinate.longitude},
Timestamp: ${DateTime.fromMillisecondsSinceEpoch(timestamp)}''';
}
}