Initial commit: Minimal Flutter timer with push notifications

2026-01-09 00:20:38 +08:00
commit 2a2f718a4b
26 changed files with 1050 additions and 0 deletions
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -0,0 +1,156 @@
+import 'dart:async';
+import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+
+final notifications = FlutterLocalNotificationsPlugin();
+
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  const androidSettings = AndroidInitializationSettings('@mipmap/ic_launcher');
+  const settings = InitializationSettings(android: androidSettings);
+  await notifications.initialize(settings);
+  await notifications.resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>()?.requestNotificationsPermission();
+  runApp(const TimerApp());
+}
+
+class TimerApp extends StatelessWidget {
+  const TimerApp({super.key});
+
+  @override
+  Widget build(BuildContext context) => MaterialApp(
+        theme: ThemeData(useMaterial3: true, colorScheme: ColorScheme.fromSeed(
+          seedColor: Colors.deepPurple,
+          brightness: Brightness.light,
+        )),
+        home: const TimerScreen(),
+      );
+}
+
+class TimerScreen extends StatefulWidget {
+  const TimerScreen({super.key});
+
+  @override
+  State<TimerScreen> createState() => _TimerScreenState();
+}
+
+class _TimerScreenState extends State<TimerScreen> {
+  int duration = 60;
+  int remaining = 60;
+  Timer? timer;
+  bool isRunning = false;
+
+  void _showNotification() async {
+    const androidDetails = AndroidNotificationDetails(
+      'timer_channel',
+      'Таймер',
+      channelDescription: 'Уведомления таймера',
+      importance: Importance.high,
+      priority: Priority.high,
+    );
+    const details = NotificationDetails(android: androidDetails);
+    await notifications.show(0, 'Таймер завершён!', 'Время вышло.', details);
+  }
+
+  void _startTimer() {
+    setState(() => isRunning = true);
+    timer = Timer.periodic(const Duration(seconds: 1), (_) {
+      if (remaining > 0) {
+        setState(() => remaining--);
+      } else {
+        timer?.cancel();
+        _showNotification();
+        setState(() => isRunning = false);
+      }
+    });
+  }
+
+  void _pauseTimer() {
+    timer?.cancel();
+    setState(() => isRunning = false);
+  }
+
+  void _resetTimer() {
+    timer?.cancel();
+    setState(() {
+      isRunning = false;
+      remaining = duration;
+    });
+  }
+
+  void _selectDuration() {
+    showModalBottomSheet(
+      context: context,
+      builder: (_) => Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [1, 5, 10, 15, 30, 60].map((m) {
+          return ListTile(
+            title: Text('$m мин'),
+            onTap: () {
+              setState(() {
+                duration = m * 60;
+                remaining = duration;
+              });
+              Navigator.pop(context);
+            },
+          );
+        }).toList(),
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    timer?.cancel();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final minutes = (remaining / 60).floor();
+    final seconds = remaining % 60;
+    final progress = duration > 0 ? (remaining / duration) as double : 0.0;
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('Таймер')),
+      body: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          GestureDetector(
+            onTap: _selectDuration,
+            child: Stack(
+              alignment: Alignment.center,
+              children: [
+                SizedBox(
+                  width: 200,
+                  height: 200,
+                  child: CircularProgressIndicator(
+                    value: progress,
+                    strokeWidth: 8,
+                  ),
+                ),
+                Text(
+                  '${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}',
+                  style: Theme.of(context).textTheme.displayMedium,
+                ),
+              ],
+            ),
+          ),
+          const SizedBox(height: 40),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              FloatingActionButton(
+                onPressed: isRunning ? _pauseTimer : _startTimer,
+                child: Icon(isRunning ? Icons.pause : Icons.play_arrow),
+              ),
+              if (remaining != duration) ...[
+                const SizedBox(width: 16),
+                OutlinedButton(onPressed: _resetTimer, child: const Text('Сброс')),
+              ],
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+}