feat: add background services and map status management
This commit is contained in:
Nedifinita
211
lib/services/background_service.dart
Normal file
211
lib/services/background_service.dart
Normal file
@@ -0,0 +1,211 @@
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import 'dart:async';
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import 'dart:io';
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import 'dart:ui';
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import 'package:flutter_background_service/flutter_background_service.dart';
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import 'package:flutter_background_service_android/flutter_background_service_android.dart';
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import 'package:flutter_local_notifications/flutter_local_notifications.dart';
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import 'package:lbjconsole/services/ble_service.dart';
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const String _notificationChannelId = 'lbj_console_channel';
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const String _notificationChannelName = 'LBJ Console 后台服务';
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const String _notificationChannelDescription = '保持蓝牙连接稳定';
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const int _notificationId = 114514;
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class BackgroundService {
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static final FlutterBackgroundService _service = FlutterBackgroundService();
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static bool _isInitialized = false;
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static Future<void> initialize() async {
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if (_isInitialized) return;
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final service = FlutterBackgroundService();
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final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
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if (Platform.isAndroid) {
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const AndroidNotificationChannel channel = AndroidNotificationChannel(
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_notificationChannelId,
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_notificationChannelName,
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description: _notificationChannelDescription,
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importance: Importance.low,
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enableLights: false,
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enableVibration: false,
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playSound: false,
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);
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await flutterLocalNotificationsPlugin.resolvePlatformSpecificImplementation<
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AndroidFlutterLocalNotificationsPlugin>()?.createNotificationChannel(channel);
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}
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await service.configure(
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androidConfiguration: AndroidConfiguration(
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onStart: _onStart,
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autoStart: true,
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isForegroundMode: true,
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notificationChannelId: _notificationChannelId,
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initialNotificationTitle: 'LBJ Console',
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initialNotificationContent: '蓝牙连接监控中',
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foregroundServiceNotificationId: _notificationId,
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),
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iosConfiguration: IosConfiguration(
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autoStart: true,
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onForeground: _onStart,
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onBackground: _onIosBackground,
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),
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);
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_isInitialized = true;
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}
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@pragma('vm:entry-point')
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static void _onStart(ServiceInstance service) async {
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DartPluginRegistrant.ensureInitialized();
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if (service is AndroidServiceInstance) {
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service.on('setAsForeground').listen((event) {
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service.setAsForegroundService();
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});
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service.on('setAsBackground').listen((event) {
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service.setAsBackgroundService();
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});
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}
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service.on('stopService').listen((event) {
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service.stopSelf();
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});
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BLEService().initialize();
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if (service is AndroidServiceInstance) {
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await Future.delayed(const Duration(seconds: 1));
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if (await service.isForegroundService()) {
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final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
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try {
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const AndroidNotificationChannel channel = AndroidNotificationChannel(
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_notificationChannelId,
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_notificationChannelName,
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description: _notificationChannelDescription,
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importance: Importance.low,
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enableLights: false,
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enableVibration: false,
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playSound: false,
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);
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await flutterLocalNotificationsPlugin.resolvePlatformSpecificImplementation<
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AndroidFlutterLocalNotificationsPlugin>()?.createNotificationChannel(channel);
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await flutterLocalNotificationsPlugin.show(
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_notificationId,
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'LBJ Console',
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'蓝牙连接监控中',
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NotificationDetails(
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android: AndroidNotificationDetails(
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_notificationChannelId,
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_notificationChannelName,
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channelDescription: _notificationChannelDescription,
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icon: '@mipmap/ic_launcher',
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ongoing: true,
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autoCancel: false,
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importance: Importance.low,
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priority: Priority.low,
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enableLights: false,
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enableVibration: false,
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playSound: false,
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onlyAlertOnce: true,
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setAsGroupSummary: false,
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groupKey: 'lbj_console_group',
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visibility: NotificationVisibility.public,
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category: AndroidNotificationCategory.service,
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),
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),
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);
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print('前台服务通知显示成功');
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} catch (e) {
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print('前台服务通知显示失败: $e');
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}
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}
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}
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Timer.periodic(const Duration(seconds: 30), (timer) async {
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if (service is AndroidServiceInstance) {
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if (await service.isForegroundService()) {
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try {
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final bleService = BLEService();
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final isConnected = bleService.isConnected;
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final deviceStatus = bleService.deviceStatus;
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final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
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await flutterLocalNotificationsPlugin.show(
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_notificationId,
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'LBJ Console',
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isConnected ? '蓝牙已连接 - $deviceStatus' : '蓝牙未连接 - 自动重连中',
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NotificationDetails(
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android: AndroidNotificationDetails(
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_notificationChannelId,
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_notificationChannelName,
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channelDescription: _notificationChannelDescription,
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icon: '@mipmap/ic_launcher',
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ongoing: true,
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autoCancel: false,
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importance: Importance.low,
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priority: Priority.low,
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enableLights: false,
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enableVibration: false,
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playSound: false,
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onlyAlertOnce: true,
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setAsGroupSummary: false,
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groupKey: 'lbj_console_group',
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visibility: NotificationVisibility.public,
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category: AndroidNotificationCategory.service,
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),
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),
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);
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} catch (e) {
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print('前台服务通知更新失败: $e');
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}
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}
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}
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});
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}
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@pragma('vm:entry-point')
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static Future<bool> _onIosBackground(ServiceInstance service) async {
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return true;
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}
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static Future<void> startService() async {
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await initialize();
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final service = FlutterBackgroundService();
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if (Platform.isAndroid) {
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final isRunning = await service.isRunning();
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if (!isRunning) {
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service.startService();
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}
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} else if (Platform.isIOS) {
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service.startService();
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}
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}
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static Future<void> stopService() async {
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final service = FlutterBackgroundService();
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service.invoke('stopService');
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}
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static Future<bool> isRunning() async {
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final service = FlutterBackgroundService();
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return await service.isRunning();
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}
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static void setForegroundMode(bool isForeground) {
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final service = FlutterBackgroundService();
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if (isForeground) {
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service.invoke('setAsForeground');
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} else {
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service.invoke('setAsBackground');
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}
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}
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}
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113
lib/services/map_state_service.dart
Normal file
113
lib/services/map_state_service.dart
Normal file
@@ -0,0 +1,113 @@
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import 'dart:convert';
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import 'package:sqflite/sqflite.dart';
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import 'package:lbjconsole/models/map_state.dart';
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import 'database_service.dart';
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class MapStateService {
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static final MapStateService instance = MapStateService._internal();
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factory MapStateService() => instance;
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MapStateService._internal();
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static const String _tableName = 'record_map_states';
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final Map<String, MapState> _memoryCache = {};
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Future<void> _ensureTableExists() async {
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final db = await DatabaseService.instance.database;
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await db.execute('''
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CREATE TABLE IF NOT EXISTS $_tableName (
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key TEXT PRIMARY KEY,
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state TEXT NOT NULL,
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updated_at INTEGER NOT NULL
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)
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''');
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}
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String getSingleRecordMapKey(String recordId) {
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return "${recordId}_record_map";
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}
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String getMergedRecordMapKey(String groupKey) {
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return "${groupKey}_group_map";
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}
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Future<void> saveMapState(String key, MapState state) async {
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try {
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_memoryCache[key] = state;
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final db = await DatabaseService.instance.database;
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await _ensureTableExists();
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await db.insert(
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_tableName,
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{
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'key': key,
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'state': jsonEncode(state.toJson()),
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'updated_at': DateTime.now().millisecondsSinceEpoch,
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},
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conflictAlgorithm: ConflictAlgorithm.replace,
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);
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} catch (e) {
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print('保存地图状态失败: $e');
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}
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}
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Future<MapState?> getMapState(String key) async {
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if (_memoryCache.containsKey(key)) {
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return _memoryCache[key];
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}
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try {
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final db = await DatabaseService.instance.database;
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await _ensureTableExists();
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final result = await db.query(
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_tableName,
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where: 'key = ?',
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whereArgs: [key],
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limit: 1,
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);
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if (result.isNotEmpty) {
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final stateJson = jsonDecode(result.first['state'] as String);
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final state = MapState.fromJson(stateJson);
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_memoryCache[key] = state;
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return state;
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}
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} catch (e) {
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print('读取地图状态失败: $e');
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}
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return null;
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}
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Future<void> deleteMapState(String key) async {
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_memoryCache.remove(key);
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try {
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final db = await DatabaseService.instance.database;
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await db.delete(
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_tableName,
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where: 'key = ?',
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whereArgs: [key],
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);
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} catch (e) {
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print('删除地图状态失败: $e');
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}
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}
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Future<void> clearAllMapStates() async {
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_memoryCache.clear();
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try {
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final db = await DatabaseService.instance.database;
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await db.delete(_tableName);
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} catch (e) {
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print('清空地图状态失败: $e');
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}
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}
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void clearMemoryCache() {
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_memoryCache.clear();
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}
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}
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