fixed locale setup in scan service

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/DeviceHandler.kt

@@ -1,9 +1,11 @@
 package deckers.thibault.aves.channel.calls
 
 import android.content.Context
+import android.content.res.Resources
 import android.os.Build
 import androidx.core.content.pm.ShortcutManagerCompat
 import deckers.thibault.aves.channel.calls.Coresult.Companion.safe
+import deckers.thibault.aves.model.FieldMap
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler
@@ -14,6 +16,7 @@ class DeviceHandler(private val context: Context) : MethodCallHandler {
         when (call.method) {
             "getCapabilities" -> safe(call, result, ::getCapabilities)
             "getDefaultTimeZone" -> safe(call, result, ::getDefaultTimeZone)
+            "getLocales" -> safe(call, result, ::getLocales)
             "getPerformanceClass" -> safe(call, result, ::getPerformanceClass)
             else -> result.notImplemented()
         }
@@ -41,6 +44,32 @@ class DeviceHandler(private val context: Context) : MethodCallHandler {
         result.success(TimeZone.getDefault().id)
     }
 
+    private fun getLocales(@Suppress("unused_parameter") call: MethodCall, result: MethodChannel.Result) {
+        fun toMap(locale: Locale): FieldMap {
+            val fields: HashMap<String, Any?> = hashMapOf(
+                "language" to locale.language,
+                "country" to locale.country,
+            )
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+                fields["script"] = locale.script
+            }
+            return fields
+        }
+
+        val locales = ArrayList<FieldMap>()
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            // when called from a window-less service, locales from `context.resources`
+            // do not reflect the current system settings, so we use `Resources.getSystem()` instead
+            val list = Resources.getSystem().configuration.locales
+            for (i in 0 until list.size()) {
+                locales.add(toMap(list.get(i)))
+            }
+        } else {
+            locales.add(toMap(Locale.getDefault()))
+        }
+        result.success(locales)
+    }
+
     private fun getPerformanceClass(@Suppress("unused_parameter") call: MethodCall, result: MethodChannel.Result) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
             val performanceClass = Build.VERSION.MEDIA_PERFORMANCE_CLASS

lib/l10n/app_de.arb

@@ -249,9 +249,9 @@
   "drawerCollectionPanoramas": "Panoramen",
   "drawerCollectionRaws": "Rohdaten Fotos",
   "drawerCollectionSphericalVideos": "360°-Videos",
-  "chipSortDate": "nach Datum",
-  "chipSortName": "nach Name",
-  "chipSortCount": "nach Anzahl",
+  "chipSortDate": "Nach Datum",
+  "chipSortName": "Nach Name",
+  "chipSortCount": "Nach Anzahl",
   "albumGroupTier": "Nach Ebene",
   "albumGroupVolume": "Nach Speichervolumen",
   "albumGroupNone": "Nicht gruppieren",

lib/model/settings/settings.dart

@@ -217,12 +217,26 @@ class Settings extends ChangeNotifier {
     _appliedLocale = null;
   }
 
+  List<Locale> _systemLocalesFallback = [];
+
+  set systemLocalesFallback(List<Locale> locales) => _systemLocalesFallback = locales;
+
   Locale? _appliedLocale;
 
   Locale get appliedLocale {
     if (_appliedLocale == null) {
-      final preferredLocale = locale;
-      _appliedLocale = basicLocaleListResolution(preferredLocale != null ? [preferredLocale] : null, AppLocalizations.supportedLocales);
+      final _locale = locale;
+      final preferredLocales = <Locale>[];
+      if (_locale != null) {
+        preferredLocales.add(_locale);
+      } else {
+        preferredLocales.addAll(WidgetsBinding.instance!.window.locales);
+        if (preferredLocales.isEmpty) {
+          // the `window` locales may be empty in a window-less service context
+          preferredLocales.addAll(_systemLocalesFallback);
+        }
+      }
+      _appliedLocale = basicLocaleListResolution(preferredLocales, AppLocalizations.supportedLocales);
     }
     return _appliedLocale!;
   }

lib/services/analysis_service.dart

@@ -112,6 +112,7 @@ class Analyzer {
       stopSignal: ValueNotifier(false),
     );
 
+    settings.systemLocalesFallback = await deviceService.getLocales();
     _l10n = await AppLocalizations.delegate.load(settings.appliedLocale);
     _serviceStateNotifier.value = AnalyzerState.running;
     await _source.init();

lib/services/device_service.dart

@@ -1,3 +1,5 @@
+import 'dart:ui';
+
 import 'package:aves/services/common/services.dart';
 import 'package:flutter/services.dart';
 
@@ -6,6 +8,8 @@ abstract class DeviceService {
 
   Future<String?> getDefaultTimeZone();
 
+  Future<List<Locale>> getLocales();
+
   Future<int> getPerformanceClass();
 }
 
@@ -33,6 +37,26 @@ class PlatformDeviceService implements DeviceService {
     return null;
   }
 
+  @override
+  Future<List<Locale>> getLocales() async {
+    try {
+      final result = await platform.invokeMethod('getLocales');
+      if (result != null) {
+        return (result as List).cast<Map>().map((tags) {
+          final language = tags['language'] as String?;
+          final country = tags['country'] as String?;
+          return Locale(
+            language ?? 'und',
+            (country != null && country.isEmpty) ? null : country,
+          );
+        }).toList();
+      }
+    } on PlatformException catch (e, stack) {
+      await reportService.recordError(e, stack);
+    }
+    return [];
+  }
+
   @override
   Future<int> getPerformanceClass() async {
     try {

lib/widgets/aves_app.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:ui';
 
 import 'package:aves/app_flavor.dart';
 import 'package:aves/app_mode.dart';
@@ -122,9 +121,7 @@ class _AvesAppState extends State<AvesApp> {
                             darkTheme: Themes.darkTheme,
                             themeMode: ThemeMode.dark,
                             locale: settingsLocale,
-                            localizationsDelegates: const [
-                              ...AppLocalizations.localizationsDelegates,
-                            ],
+                            localizationsDelegates: AppLocalizations.localizationsDelegates,
                             supportedLocales: AppLocalizations.supportedLocales,
                             // checkerboardRasterCacheImages: true,
                             // checkerboardOffscreenLayers: true,
@@ -200,7 +197,7 @@ class _AvesAppState extends State<AvesApp> {
               ? 'profile'
               : 'debug',
       'has_play_services': hasPlayServices,
-      'locales': window.locales.join(', '),
+      'locales': WidgetsBinding.instance!.window.locales.join(', '),
       'time_zone': '${now.timeZoneName} (${now.timeZoneOffset})',
     });
     _navigatorObservers = [

lib/widgets/debug/settings.dart

@@ -68,7 +68,7 @@ class DebugSettingsSection extends StatelessWidget {
                   'searchHistory': toMultiline(settings.searchHistory),
                   'lastVersionCheckDate': '${settings.lastVersionCheckDate}',
                   'locale': '${settings.locale}',
-                  'systemLocale': '${WidgetsBinding.instance!.window.locale}',
+                  'systemLocales': '${WidgetsBinding.instance!.window.locales}',
                 },
               ),
             ),