main, ensure the alarm time gets changed if modified when already enabled.

android/app/src/main/AndroidManifest.xml

@@ -3,13 +3,14 @@
     xmlns:tools="http://schemas.android.com/tools"
     >
 
+    <!-- Allow notifications to work. -->
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>
     <uses-permission android:name="android.permission.USE_EXACT_ALARM"/>
 
-    <!--
+    <!-- Allow alarms to work. -->
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.WAKE_LOCK"/>
     <uses-permission android:name="android.permission.VIBRATE"/>
@@ -25,10 +26,9 @@
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.WAKE_LOCK"/>
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>
-    -->
 
     <application
-        android:label="sunset_alarm"
+        android:label="Sunset Alarm"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity
@@ -59,6 +59,7 @@
             android:name="flutterEmbedding"
             android:value="2" />
 
+        <!-- Allow notifications to work. -->
         <receiver
             android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver"
             android:enabled="true" />
@@ -74,16 +75,14 @@
             </intent-filter>
         </receiver>
 
-        <!--
+        <!-- Allow alarms to work. -->
         <service
             android:name="com.gdelataillade.alarm.AlarmService"
             android:foregroundServiceType="mediaPlayback"
             android:exported="false" />
-
         <receiver
             android:name="com.gdelataillade.alarm.AlarmBroadcastReceiver"
             android:exported="false" />
-
         <receiver
             android:name="com.gdelataillade.alarm.BootBroadcastReceiver"
             android:enabled="false"
@@ -92,7 +91,6 @@
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>
         </receiver>
-
         <service
             android:name="dev.fluttercommunity.plus.androidalarmmanager.AlarmService"
             android:permission="android.permission.BIND_JOB_SERVICE"
@@ -111,7 +109,7 @@
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>
         </receiver>
-        -->
+
     </application>
     <!-- Required to query activities that can process text, see:
          https://developer.android.com/training/package-visibility and

com.hyperling.sunset_alarm.yml

@@ -0,0 +1,16 @@
+AuthorName: 'Chad Michael "Hyperling" Greenwood'
+AuthorEmail: 'me@hyperling.com'
+AuthorWebSite: 'https://hyperling.com/about/'
+Donate: 'https://hyperling.com/donate/'
+Liberapay: 'HyperVegan'
+Bitcoin: 'bc1qsfe8dkvry3d34kztz449gkq67wq8fu2nkgfkh0'
+Litecoin: 'ltc1qavmpu5d6ljntxsd6jj548m4yys83zwscl0dzkx'
+IssueTracker: 'https://hyperling.com/contact/'
+Categories:
+- fdroid
+- hyperling
+- utilities
+Name: Sunset Timer
+Summary: 'Play a notification at your chosen time before sunset.'
+SourceCode: 'https://git.hyperling.com/me/flutter-sunset-alarm/'
+WebSite: 'https://hyperling.com/apps/#sunset'

lib/main.dart

@@ -6,16 +6,22 @@ import 'package:geolocator/geolocator.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:timezone/data/latest_all.dart' as tz;
-import 'package:timezone/timezone.dart' as tz;
 import 'package:http/http.dart' as http;
-//import 'package:alarm/alarm.dart';
+import 'package:alarm/alarm.dart';
 
 import 'dart:convert';
 
+/// TBD:
+/// v0.3.0
+/// - Add sunrise section and change app name to Sunshine Alarm?
+/// v1.0.0
+/// - Follow system theme rather than using a custom theme.
+/// :TBD
+
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   tz.initializeTimeZones();
-  //await Alarm.init();
+  await Alarm.init();
   runApp(const SunsetAlarmApp());
 }
 
@@ -24,12 +30,22 @@ class SunsetAlarmApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    const seedColor = Colors.deepOrange;
     return MaterialApp(
       title: 'Sunset Alarm',
       theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepOrange),
+        colorScheme: ColorScheme.fromSeed(
-        useMaterial3: true,
+          seedColor: seedColor,
+          brightness: Brightness.light,
+        ),
       ),
+      darkTheme: ThemeData(
+        colorScheme: ColorScheme.fromSeed(
+          seedColor: seedColor,
+          brightness: Brightness.dark,
+        ),
+      ),
+      themeMode: ThemeMode.system,
       home: const HomeScreen(),
     );
   }
@@ -55,6 +71,9 @@ class _HomeScreenState extends State<HomeScreen> {
   int _minutesBefore = 30;
   bool _loading = false;
 
+  String? _sunsetErrorText = null;
+  String? _minuteErrorText = null;
+
   static const _alarmId = 1001;
 
   @override
@@ -232,7 +251,7 @@ class _HomeScreenState extends State<HomeScreen> {
         'Alarm set for ${alarmTime.hour.toString().padLeft(2, '0')}:${alarmTime.minute.toString().padLeft(2, '0')} (app must stay open)',
       );
     } else if (Platform.isAndroid) {
-      /*** Notifcation Method - Works ***/
+      /*** Notifcation Method - Works *** /
       // Android: use zonedSchedule (works in background)
       final tzAlarm = tz.TZDateTime.from(alarmTime, tz.local);
       const androidDetails = AndroidNotificationDetails(
@@ -258,27 +277,28 @@ class _HomeScreenState extends State<HomeScreen> {
       debugPrint('DEBUG: ${_notifications.toString()}');
       // End Notification Method ***/
 
-      /*** Alarm Method - WIP *** /
+      /*** Alarm Method - WIP ***/
       // Schedule:
       final settings = AlarmSettings(
-        id: 42,
+        id: _alarmId,
-        dateTime: alarmTime, // your computed sunset time
+        dateTime: alarmTime,
-        assetAudioPath: 'assets/alarm.mp3', // put an alarm sound in assets/
+        //assetAudioPath: 'assets/alarm.mp3', // use default rather than custom
         loopAudio: true, // keeps ringing until dismissed
         vibrate: true,
         androidFullScreenIntent: true, // wakes screen like clock app
         volumeSettings: VolumeSettings.fade(
-          volume: 0.8,
+          //volume: 0.8, // use default rather than custom
-          fadeDuration: Duration(seconds: 5),
+          fadeDuration: Duration(seconds: 60),
         ),
-        notificationSettings: const NotificationSettings(
+        notificationSettings: NotificationSettings(
           title: 'Sunset Alarm',
-          body: 'The sun sets now. Time to get ready!',
+          body: 'Sun is setting in ${_minutesBefore} minute(s)!',
           stopButton: 'Dismiss',
         ),
       );
       await Alarm.set(alarmSettings: settings);
       // End Alarm Method ***/
+      _showSnack('Alarm Scheduled @ ${alarmTime}');
     } else {
       _showSnack('Platform not detected, unsure how to show alarm.');
     }
@@ -292,9 +312,13 @@ class _HomeScreenState extends State<HomeScreen> {
     } else {
       _alarmTimer?.cancel();
       if (!Platform.isLinux) {
-        await _notifications.cancel(id: _alarmId);
+        // Notification Method
+        //await _notifications.cancel(id: _alarmId);
+
+        // Alarm Method
+        await Alarm.stop(_alarmId);
       }
-      _showSnack('Alarm cancelled.');
+      _showSnack('Alarm Cancelled');
     }
   }
 
@@ -311,6 +335,17 @@ class _HomeScreenState extends State<HomeScreen> {
     super.dispose();
   }
 
+  String? _validateTime(String? value) {
+    if (value == null || !RegExp(r'^\d{2}:\d{2}$').hasMatch(value)) {
+      return 'Use HH:MM Format';
+    }
+    final h = int.parse(value.substring(0, 2));
+    final m = int.parse(value.substring(3, 5));
+    if (h > 23) return 'Hour Must Be 0–23';
+    if (m > 59) return 'Minute Must Be 0–59';
+    return null; // valid
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -360,7 +395,7 @@ class _HomeScreenState extends State<HomeScreen> {
                 const SizedBox(width: 8),
                 IconButton.filledTonal(
                   icon: const Icon(Icons.my_location),
-                  tooltip: 'Get GPS location',
+                  tooltip: 'Get GPS Location',
                   onPressed: _getGpsLocation,
                 ),
               ],
@@ -378,11 +413,43 @@ class _HomeScreenState extends State<HomeScreen> {
                 Expanded(
                   child: TextField(
                     controller: _sunsetController,
-                    decoration: const InputDecoration(
+                    decoration: InputDecoration(
-                      labelText: 'Sunset time (HH:MM)',
+                      labelText: 'Sunset Time (HH:MM)',
                       border: OutlineInputBorder(),
+                      errorText: _sunsetErrorText,
+                      suffixIcon: IconButton(
+                        icon: Icon(Icons.access_time),
+                        onPressed: () async {
+                          final picked = await showTimePicker(
+                            context: context,
+                            initialTime: TimeOfDay.now(),
+                          );
+                          if (picked != null) {
+                            _sunsetController.text =
+                                '${picked.hour.toString().padLeft(2, '0')}:'
+                                '${picked.minute.toString().padLeft(2, '0')}';
+                            setState(
+                              () =>
+                                  _sunsetErrorText = _validateTime(
+                                    _sunsetController.text,
+                                  ),
+                            );
+                          }
+                        },
+                      ),
                     ),
-                    onChanged: (_) => _savePrefs(),
+                    onChanged: (v) {
+                      final val = _validateTime(v);
+                      if (val == null) {
+                        _savePrefs();
+                        if (_alarmEnabled) {
+                          _scheduleAlarm();
+                        }
+                      }
+                      setState(() {
+                        _sunsetErrorText = val;
+                      });
+                    },
                   ),
                 ),
                 const SizedBox(width: 8),
@@ -395,55 +462,69 @@ class _HomeScreenState extends State<HomeScreen> {
                             child: CircularProgressIndicator(strokeWidth: 2),
                           )
                           : const Icon(Icons.cloud_done_outlined),
-                  tooltip: 'Fetch sunset from Open-Meteo',
+                  tooltip: 'Fetch Sunset Time from Open-Meteo',
-                  onPressed: _loading ? null : _fetchSunset,
+                  onPressed: () {
+                    if (!_loading) {
+                      _fetchSunset();
+                      if (_alarmEnabled) {
+                        _scheduleAlarm();
+                      }
+                    }
+                  },
                 ),
               ],
             ),
             const SizedBox(height: 16),
 
-            // --- Minutes before ---
             const Text(
-              'Alert Before Sunset',
+              'Alert',
               style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
             ),
             const SizedBox(height: 8),
+
+            // --- Minutes before ---
             Row(
               children: [
-                const Text('Minutes before: '),
+                if (!_alarmEnabled)
-                SizedBox(
+                  Expanded(
-                  width: 80,
+                    child: TextField(
-                  child: TextField(
+                      controller: _minutesController,
-                    controller: _minutesController,
+                      keyboardType: TextInputType.number,
-                    keyboardType: TextInputType.number,
+                      decoration: InputDecoration(
-                    decoration: const InputDecoration(
+                        border: OutlineInputBorder(),
-                      border: OutlineInputBorder(),
+                        labelText: 'Minutes Before Sunset',
+                        errorText: _minuteErrorText,
+                      ),
+                      onChanged: (v) {
+                        final val = int.tryParse(v);
+                        setState(() {
+                          if (val != null) {
+                            _minuteErrorText = null;
+                            _minutesBefore = val;
+                          } else {
+                            _minuteErrorText = 'Invalid Minute Value';
+                          }
+                        });
+                      },
                     ),
-                    onChanged: (v) {
+                  ),
-                      final val = int.tryParse(v);
+
-                      if (val != null && val >= 0) {
+                // --- Toggle ---
-                        _minutesBefore = val;
+                Expanded(
-                      } else {
+                  child: SwitchListTile(
-                        _showSnack('Invalid Minute Value');
+                    //title: const Text('Enable Sunset Alarm'),
-                      }
+                    title: Text(_alarmEnabled ? 'Sunset Alarm Enabled' : ''),
-                    },
+                    subtitle: Text(
+                      _alarmEnabled
+                          ? 'Will alert ${_minutesBefore} min before sunset. ($_alarmDisplayTime)'
+                          : '',
+                    ),
+                    value: _alarmEnabled,
+                    onChanged: _toggleAlarm,
                   ),
                 ),
               ],
             ),
-            const SizedBox(height: 24),
-
-            // --- Toggle ---
-            SwitchListTile(
-              title: const Text('Enable Sunset Alarm'),
-              subtitle: Text(
-                _alarmEnabled
-                    ? 'Will alert ${_minutesBefore} min before sunset. ($_alarmDisplayTime)'
-                    : 'Alarm is off',
-              ),
-              value: _alarmEnabled,
-              onChanged: _toggleAlarm,
-            ),
           ],
         ),
       ),

pubspec.yaml

@@ -1,7 +1,7 @@
 name: sunset_alarm
 description: "Set an alarm to go off a specified time before sunset."
 publish_to: 'none'
-version: 0.1.2
+version: 0.2.0
 
 environment:
   sdk: ^3.7.2