Add QR scanner

android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
     <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.CAMERA"/>
     <application
         tools:replace="android:label"
         android:label="Traccar Client"

ios/Podfile.lock

@@ -145,6 +145,9 @@ PODS:
   - GoogleUtilities/UserDefaults (8.1.0):
     - GoogleUtilities/Logger
     - GoogleUtilities/Privacy
+  - mobile_scanner (7.0.0):
+    - Flutter
+    - FlutterMacOS
   - nanopb (3.30910.0):
     - nanopb/decode (= 3.30910.0)
     - nanopb/encode (= 3.30910.0)
@@ -170,6 +173,7 @@ DEPENDENCIES:
   - firebase_messaging (from `.symlinks/plugins/firebase_messaging/ios`)
   - Flutter (from `Flutter`)
   - flutter_background_geolocation (from `.symlinks/plugins/flutter_background_geolocation/ios`)
+  - mobile_scanner (from `.symlinks/plugins/mobile_scanner/darwin`)
   - quick_actions_ios (from `.symlinks/plugins/quick_actions_ios/ios`)
   - rate_my_app (from `.symlinks/plugins/rate_my_app/darwin`)
   - shared_preferences_foundation (from `.symlinks/plugins/shared_preferences_foundation/darwin`)
@@ -209,6 +213,8 @@ EXTERNAL SOURCES:
     :path: Flutter
   flutter_background_geolocation:
     :path: ".symlinks/plugins/flutter_background_geolocation/ios"
+  mobile_scanner:
+    :path: ".symlinks/plugins/mobile_scanner/darwin"
   quick_actions_ios:
     :path: ".symlinks/plugins/quick_actions_ios/ios"
   rate_my_app:
@@ -238,6 +244,7 @@ SPEC CHECKSUMS:
   GoogleAppMeasurement: 0dfca1a4b534d123de3945e28f77869d10d0d600
   GoogleDataTransport: aae35b7ea0c09004c3797d53c8c41f66f219d6a7
   GoogleUtilities: 00c88b9a86066ef77f0da2fab05f65d7768ed8e1
+  mobile_scanner: 9157936403f5a0644ca3779a38ff8404c5434a93
   nanopb: fad817b59e0457d11a5dfbde799381cd727c1275
   PromisesObjC: f5707f49cb48b9636751c5b2e7d227e43fba9f47
   PromisesSwift: 9d77319bbe72ebf6d872900551f7eeba9bce2851

ios/Runner/Info.plist

@@ -41,6 +41,8 @@
 	<string>Location required when app is in use</string>
 	<key>NSMotionUsageDescription</key>
 	<string>Motion permission helps detect when device in in-motion</string>
+	<key>NSCameraUsageDescription</key>
+	<string>Camera access is required to scan QR codes</string>
 	<key>UIApplicationSupportsIndirectInputEvents</key>
 	<true/>
 	<key>UIBackgroundModes</key>

lib/qr_code_screen.dart

@@ -0,0 +1,89 @@
+import 'package:flutter/material.dart';
+import 'package:mobile_scanner/mobile_scanner.dart';
+import 'package:flutter_background_geolocation/flutter_background_geolocation.dart' as bg;
+
+import 'preferences.dart';
+import 'l10n/app_localizations.dart';
+
+class QrCodeScreen extends StatefulWidget {
+  const QrCodeScreen({super.key});
+
+  @override
+  State<QrCodeScreen> createState() => _QrCodeScreenState();
+}
+
+class _QrCodeScreenState extends State<QrCodeScreen> {
+  bool _scanned = false;
+
+  Future<void> _applySettings(Uri uri) async {
+    await Preferences.instance.setString(Preferences.url, '${uri.origin}${uri.path}');
+    final parameters = uri.queryParameters;
+    await _applyStringParameter(parameters, Preferences.id);
+    await _applyStringParameter(parameters, Preferences.accuracy);
+    await _applyIntParameter(parameters, Preferences.distance);
+    await _applyIntParameter(parameters, Preferences.interval);
+    await _applyIntParameter(parameters, Preferences.angle);
+    await _applyIntParameter(parameters, Preferences.heartbeat);
+    await _applyIntParameter(parameters, Preferences.fastestInterval);
+    await _applyBoolParameter(parameters, Preferences.buffer);
+    await _applyBoolParameter(parameters, Preferences.wakelock);
+    await _applyBoolParameter(parameters, Preferences.stopDetection);
+    await bg.BackgroundGeolocation.setConfig(Preferences.geolocationConfig());
+  }
+
+  Future<void> _applyStringParameter(Map<String, String> parameters, String key) async {
+    final value = parameters[key];
+    if (value != null) {
+      await Preferences.instance.setString(key, value);
+    }
+  }
+
+  Future<void> _applyIntParameter(Map<String, String> parameters, String key) async {
+    final stringValue = parameters[key];
+    if (stringValue != null) {
+      final value = int.tryParse(stringValue);
+      if (value != null) {
+        await Preferences.instance.setInt(key, value);
+      }
+    }
+  }
+
+  Future<void> _applyBoolParameter(Map<String, String> parameters, String key) async {
+    final value = parameters[key];
+    if (value != null) {
+      switch (value) {
+        case 'false':
+          await Preferences.instance.setBool(key, false);
+          break;
+        case 'true':
+          await Preferences.instance.setBool(key, true);
+          break;
+      }
+    }
+  }
+
+  void _onDetect(BarcodeCapture capture) async {
+    if (_scanned) return;
+    final barcode = capture.barcodes.first;
+    final rawValue = barcode.rawValue;
+    if (rawValue == null) return;
+    final uri = Uri.tryParse(rawValue);
+    if (uri == null || uri.scheme.isEmpty) return;
+    _scanned = true;
+    await _applySettings(uri);
+    if (mounted) Navigator.pop(context);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(AppLocalizations.of(context)!.settingsTitle),
+      ),
+      body: MobileScanner(
+        fit: BoxFit.cover,
+        onDetect: _onDetect,
+      ),
+    );
+  }
+}

lib/settings_screen.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_background_geolocation/flutter_background_geolocation.dart' as bg;
+import 'package:traccar_client/qr_code_screen.dart';
 import 'package:wakelock_partial_android/wakelock_partial_android.dart';
 
 import 'l10n/app_localizations.dart';
@@ -17,23 +18,6 @@ class SettingsScreen extends StatefulWidget {
 
 class _SettingsScreenState extends State<SettingsScreen> {
   bool advanced = false;
-  bool buffering = true;
-  bool wakelock = false;
-  bool stopDetection = true;
-
-  @override
-  void initState() {
-    super.initState();
-    _initState();
-  }
-
-  void _initState() async {
-    setState(() {
-      buffering = Preferences.instance.getBool(Preferences.buffer) ?? true;
-      wakelock = Preferences.instance.getBool(Preferences.wakelock) ?? false;
-      stopDetection = Preferences.instance.getBool(Preferences.stopDetection) ?? true;
-    });
-  }
 
   String _getAccuracyLabel(String? key) {
     return switch (key) {
@@ -148,7 +132,18 @@ class _SettingsScreenState extends State<SettingsScreen> {
     final isHighestAccuracy = Preferences.instance.getString(Preferences.accuracy) == 'highest';
     final distance = Preferences.instance.getInt(Preferences.distance);
     return Scaffold(
-      appBar: AppBar(title: Text(AppLocalizations.of(context)!.settingsTitle)),
+      appBar: AppBar(
+        title: Text(AppLocalizations.of(context)!.settingsTitle),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.qr_code_scanner),
+            onPressed: () async {
+              await Navigator.push(context, MaterialPageRoute(builder: (_) => const QrCodeScreen()));
+              setState(() {});
+            },
+          ),
+        ],
+      ),
       body: ListView(
         children: [
           _buildListTile(AppLocalizations.of(context)!.idLabel, Preferences.id, false),
@@ -172,17 +167,17 @@ class _SettingsScreenState extends State<SettingsScreen> {
           if (advanced)
             SwitchListTile(
               title: Text(AppLocalizations.of(context)!.bufferLabel),
-              value: buffering,
+              value: Preferences.instance.getBool(Preferences.buffer) ?? true,
               onChanged: (value) async {
                 await Preferences.instance.setBool(Preferences.buffer, value);
                 await bg.BackgroundGeolocation.setConfig(Preferences.geolocationConfig());
-                setState(() => buffering = value);
+                setState(() {});
               },
             ),
           if (advanced && Platform.isAndroid)
             SwitchListTile(
               title: Text(AppLocalizations.of(context)!.wakelockLabel),
-              value: wakelock,
+              value: Preferences.instance.getBool(Preferences.wakelock) ?? false,
               onChanged: (value) async {
                 await Preferences.instance.setBool(Preferences.wakelock, value);
                 if (value) {
@@ -193,17 +188,17 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 } else {
                   WakelockPartialAndroid.release();
                 }
-                setState(() => wakelock = value);
+                setState(() {});
               },
             ),
           if (advanced)
             SwitchListTile(
               title: Text(AppLocalizations.of(context)!.stopDetectionLabel),
-              value: stopDetection,
+              value: Preferences.instance.getBool(Preferences.stopDetection) ?? true,
               onChanged: (value) async {
                 await Preferences.instance.setBool(Preferences.stopDetection, value);
                 await bg.BackgroundGeolocation.setConfig(Preferences.geolocationConfig());
-                setState(() => stopDetection = value);
+                setState(() {});
               },
             ),
         ],

pubspec.lock

@@ -277,6 +277,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.16.0"
+  mobile_scanner:
+    dependency: "direct main"
+    description:
+      name: mobile_scanner
+      sha256: "54005bdea7052d792d35b4fef0f84ec5ddc3a844b250ecd48dc192fb9b4ebc95"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
   path:
     dependency: transitive
     description:
@@ -516,4 +524,4 @@ packages:
     version: "1.1.0"
 sdks:
   dart: ">=3.8.1 <4.0.0"
-  flutter: ">=3.27.0"
+  flutter: ">=3.29.0"

pubspec.yaml

@@ -22,6 +22,7 @@ dependencies:
   rate_my_app: ^2.3.1
   shared_preferences_android: ^2.4.10
   wakelock_partial_android: ^1.0.0
+  mobile_scanner: ^7.0.1
 
 dev_dependencies:
   flutter_test: