Flutter开发之flutter_local_notifications

flutter_local_notifications 消息通知

flutter_local_notifications地址

flutter_local_notifications: ^18.0.1

class NotificationHelper {//工厂模式调用该类时，默认调用此方法，将实例对象返回出去static NotificationHelper? _instance = null;static NotificationHelper getInstance() {_instance ??= NotificationHelper._initial();return _instance!;}factory NotificationHelper() => _instance ??= NotificationHelper._initial();//创建命名构造函数NotificationHelper._initial() {initialize();}// FlutterLocalNotificationsPlugin实例final FlutterLocalNotificationsPlugin _notificationsPlugin =FlutterLocalNotificationsPlugin();// 常量定义static const String _channelId = 'your.channel.id';static const String _channelName = 'your channel name';static const String _channelDescription = 'your channel description';static const String _ticker = 'ticker';static const String _darwinNotificationCategoryPlain = 'plainCategory';// 初始化通知插件Future<void> initialize() async {try {final AndroidInitializationSettings initializationSettingsAndroid =AndroidInitializationSettings('@mipmap/ic_launcher');final DarwinInitializationSettings initializationSettingsIOS =DarwinInitializationSettings();final InitializationSettings initializationSettings =InitializationSettings(android: initializationSettingsAndroid,iOS: initializationSettingsIOS);await _notificationsPlugin.initialize(initializationSettings);} catch (e) {print('初始化通知插件失败: $e');}}Future<void> requestNotificationPermissions() async {if (await Permission.notification.isDenied) {final status = await Permission.notification.request();final status1 = await Permission.scheduleExactAlarm.request();LogUtils.d("requestNotificationPermissions ：通知权限status1 $status1");if (status.isGranted) {LogUtils.d("requestNotificationPermissions ：通知权限已授予");print('通知权限已授予');} else {LogUtils.d("requestNotificationPermissions ：通知权限被拒绝");print('通知权限被拒绝');}} else {LogUtils.d("requestNotificationPermissions ：通知权限已授予");print('通知权限已授予');}}// 显示通知Future<void> showNotification({required String title, required String body}) async {try {final AndroidNotificationDetails androidNotificationDetails =AndroidNotificationDetails(_channelId, _channelName,channelDescription: _channelDescription,importance: Importance.max,priority: Priority.high,ticker: _ticker);final DarwinNotificationDetails iosNotificationDetails =DarwinNotificationDetails(categoryIdentifier: _darwinNotificationCategoryPlain);final NotificationDetails platformChannelSpecifics =NotificationDetails(android: androidNotificationDetails, iOS: iosNotificationDetails);await _notificationsPlugin.show(1,title,body,platformChannelSpecifics,);} catch (e) {print('显示通知失败: $e');}}// 周期性通知Future<void> scheduleNotification({required int id,required String title,required String body,}) async {const AndroidNotificationDetails androidNotificationDetails =AndroidNotificationDetails('your.channel.id', 'your channel name',channelDescription: 'your channel description',importance: Importance.max,priority: Priority.high,ticker: 'ticker');// ios的通知const String darwinNotificationCategoryPlain = 'plainCategory';const DarwinNotificationDetails iosNotificationDetails =DarwinNotificationDetails(categoryIdentifier: darwinNotificationCategoryPlain, // 通知分类);// 创建跨平台通知const NotificationDetails platformChannelSpecifics = NotificationDetails(android: androidNotificationDetails, iOS: iosNotificationDetails);
// 发起通知await _notificationsPlugin.periodicallyShow(id, title, body, RepeatInterval.everyMinute, platformChannelSpecifics);}// 定时通知Future<void> zonedScheduleNotification({required int id,required String title,required String body,required DateTime scheduledDateTime}) async {const AndroidNotificationDetails androidNotificationDetails =AndroidNotificationDetails('10001', '唤醒',channelDescription: 'your channel description',importance: Importance.max,priority: Priority.high,ticker: 'ticker');// ios的通知const String darwinNotificationCategoryPlain = 'plainCategory';const DarwinNotificationDetails iosNotificationDetails =DarwinNotificationDetails(categoryIdentifier: darwinNotificationCategoryPlain, // 通知分类);// 创建跨平台通知const NotificationDetails platformChannelSpecifics = NotificationDetails(android: androidNotificationDetails, iOS: iosNotificationDetails);// 获取本地时区final location = tz.getLocation(tz.local.name);// 发起通知_notificationsPlugin.zonedSchedule(id, title, body,TZDateTime.from(scheduledDateTime, location), // 使用本地时区的时间platformChannelSpecifics,uiLocalNotificationDateInterpretation:UILocalNotificationDateInterpretation.wallClockTime, // 设置通知的触发时间是觉得时间);}/// 取消全部通知cancelAll(){_notificationsPlugin.cancelAll();}/// 取消对应ID的通知cancelId(int id){_notificationsPlugin.cancel(id);}
}

使用步骤：

0.请求通知权限
android
manifest.xml

<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />

ios
Info.plist

<key>NSUserNotificationAlertIdentifier</key>
<string>我们需要您的许可来发送通知</string>
<key>NSUserNotificationAlertTitle</key>
<string>请求通知权限</string>
<key>NSUserNotificationAlertBody</key>
<string>我们希望能够在您允许的情况下发送通知。</string>

使用之前一定要代码里边获取通知权限

NotificationHelper.getInstance().requestNotificationPermissions();

1.初始化

NotificationHelper.getInstance().initialize();

2.使用

NotificationHelper.getInstance().zonedScheduleNotification(id: 10001, title: "科学研究", body: "研究开始了", scheduledDateTime: DateUtilss.getNowDateMs15or25DateTime(15));