Crash on iOS when opening Sygic Truck map via MapLauncher #215
Description
When attempting to open directions using MapLauncher with the Sygic Truck map on iOS, the app crashes with the following error:
Swift runtime failure: Unexpectedly found nil while unwrapping an Optional value
UIApplication.shared.open(URL(string:url)!, options: [:], completionHandler: nil)
Steps to reproduce:
- Install the Flutter MapLauncher plugin.
- Ensure Sygic Truck app is installed on the iOS device.
- Call MapLauncher.installedMaps and select the map with mapType: sygicTruck.
- App crashes immediately.
Code:
class MapLauncherDemo extends StatelessWidget {
openMapsSheet(context) async {
final coords = Coords(37.759392, -122.5107336);
final title = "Ocean Beach";
final availableMaps = await MapLauncher.installedMaps;
showModalBottomSheet(
context: context,
builder: (BuildContext context) {
return SafeArea(
child: SingleChildScrollView(
child: Container(
child: Wrap(
children: <Widget>[
for (var map in availableMaps)
ListTile(
onTap: () {
try {
map.showDirections(
destination: coords,
destinationTitle: title,
);
} catch (e) {
print(e);
}
},
title: Text(map.mapName),
),
],
),
),
),
);
},
);
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(title: const Text('Map Launcher Demo')),
body: Center(
child: MaterialButton(
onPressed: () => openMapsSheet(context),
child: Text('Show Maps'),
),
),
),
);
}
}
Following Queries Schemes:
<key>LSApplicationQueriesSchemes</key>
<array>
<string>comgooglemaps</string>
<string>baidumap</string>
<string>iosamap</string>
<string>waze</string>
<string>yandexmaps</string>
<string>yandexnavi</string>
<string>citymapper</string>
<string>mapswithme</string>
<string>osmandmaps</string>
<string>dgis</string>
<string>qqmap</string>
<string>here-location</string>
<string>tomtomgo</string>
<string>copilot</string>
<string>com.sygic.aura</string>
<string>nmap</string>
<string>kakaomap</string>
<string>tmap</string>
<string>szn-mapy</string>
<string>mappls</string>
<string>moovit</string>
<string>neshan</string>
</array>
Info:
iOS device,
Flutter 3.38.7 • channel stable • https://github.com/flutter/flutter.git
Tools • Dart 3.10.7 • DevTools 2.51.1
MapLauncher version: 4.4.2
Sygic Truck installed.
Notes:
The crash occurs because the URL scheme used in the plugin for Sygic Truck (com.sygic.aura://coordinate|lat|lng|drive) seems invalid for the Truck version. The plugin force-unwraps the URL, causing a fatal error.
Stack Trace:
flutter: availableMaps: [AvailableMap { mapName: Apple Maps, mapType: apple }, AvailableMap { mapName: Google Maps, mapType: google }, AvailableMap { mapName: Citymapper, mapType: citymapper }, AvailableMap { mapName: MAPS.ME, mapType: mapswithme }, AvailableMap { mapName: Sygic Truck, mapType: sygicTruck }]
Process 4882 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = Swift runtime failure: Unexpectedly found nil while unwrapping an Optional value
frame #1: 0x00000001042646b8 map_launcher`showDirections(mapType=<unavailable>, url="com.sygic.aura://coordinate|-122.5107336|37.759392|drive", destinationTitle="Ocean Beach", destinationLatitude="37.759392", destinationLongitude="-122.5107336", originTitle=nil, originLatitude=nil, originLongitude=nil, directionsMode="driving", waypoints=nil) at MapLauncherPlugin.swift:158:50 [opt] [inlined]
155 launchOptions: [MKLaunchOptionsDirectionsModeKey: getDirectionsMode(directionsMode: directionsMode)]
156 )
157 default:
-> 158 UIApplication.shared.open(URL(string:url)!, options: [:], completionHandler: nil)