[英]Flutter local notifications package not working when scheduling a notification not in the range of a few hours
[英]Flutter: Local Notification Scheduling
我正在尝试从用户选择的日期和时间设置预定的警报通知,我使用 showDatePicker 下面的代码
DateTime _selectedDateAndTime;
Future _selectDayAndTimeL(BuildContext context) async {
DateTime _selectedDay = await showDatePicker(
context: context,
initialDate: DateTime.now(),
firstDate: DateTime(2021),
lastDate: DateTime(2030),
builder: (BuildContext context, Widget child) => child);
TimeOfDay _selectedTime = await showTimePicker(
context: context,
initialTime: TimeOfDay.now(),
);
if (_selectedDay != null && _selectedTime != null) {
//a little check
}
setState(() {
_selectedDateAndTime = DateTime(
_selectedDay.year,
_selectedDay.month,
_selectedDay.day,
_selectedTime.hour,
_selectedTime.minute,
);
// _selectedDate = _selectedDay;
});
// print('...');
}
在选择日期和时间之后,值的格式如下图所示
现在我希望能够使用选择中的值设置计划通知,但不知道该怎么做...我已经安装了 Flutter_Local_Notification 并将其导入到我的 main.dart 中,在清单文件中设置了权限并还尝试像下面一样初始化插件
FlutterLocalNotificationsPlugin fltrNotification;
String _selectedParam;
int val;
@override
void initState() {
super.initState();
var androidInitilize = new AndroidInitializationSettings('app_icon');
var iOSinitilize = new IOSInitializationSettings();
var initilizationsSettings =
new InitializationSettings(androidInitilize, iOSinitilize);
fltrNotification = new FlutterLocalNotificationsPlugin();
fltrNotification.initialize(initilizationsSettings,
onSelectNotification: notificationSelected);
}
我还将 app_icon.png 添加到我的可绘制文件夹中
我试图按照一些教程来了解如何做到这一点,但其中大多数只展示了如何使用秒来设置网络,但对于我自己的项目,我想设置特定日期、小时和分钟的时间表
请问我怎样才能做到这一点?
你可以使用这个我的助手 class
class NotificationPlugin {
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
var initializationSettings;
NotificationPlugin._() {
init();
}
init() async {
flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
if (Platform.isIOS) {
_requestIOSPermission();
}
initializePlatformSpecifics();
}
initializePlatformSpecifics() {
var initializationSettingsAndroid = AndroidInitializationSettings(
'mipmap/ic_launcher'); // <- default icon name is @mipmap/ic_launcher
var initializationSettingsIOS =
IOSInitializationSettings(onDidReceiveLocalNotification: (int a, String b, String c, d) {});
var initializationSettings =
InitializationSettings(initializationSettingsAndroid, initializationSettingsIOS);
flutterLocalNotificationsPlugin.initialize(initializationSettings,
onSelectNotification: (String s) {});
initializationSettings =
InitializationSettings(initializationSettingsAndroid, initializationSettingsIOS);
}
_requestIOSPermission() {
flutterLocalNotificationsPlugin
.resolvePlatformSpecificImplementation<IOSFlutterLocalNotificationsPlugin>()
.requestPermissions(alert: false, badge: true, sound: true);
}
setOnNotificationClick(Function onNotificationClick) async {
await flutterLocalNotificationsPlugin.initialize(
initializationSettings,
onSelectNotification: (payload) async {
onNotificationClick(payload);
},
);
}
Future<void> showNotification(
{@required int id, @required String title, @required String body}) async {
var androidChannelSpecifics = AndroidNotificationDetails(
'CHANNEL_ID',
'CHANNEL_NAME',
'CHANNEL_DESCRIPTION',
importance: Importance.High,
priority: Priority.High,
);
var iosChannelSpecifics = IOSNotificationDetails();
var platformChannelSpecifics = NotificationDetails(
androidChannelSpecifics,
iosChannelSpecifics,
);
await flutterLocalNotificationsPlugin.show(id, title, body, platformChannelSpecifics,
payload: id.toString());
}
Future<void> showScheduledNotification(
{@required int id,
@required String title,
@required String body,
@required String date}) async {
var scheduledNotificationDateTime = DateTime.parse(date);
var androidPlatformChannelSpecifics = AndroidNotificationDetails(
'your other channel id', 'your other channel name', 'your other channel description');
var iOSPlatformChannelSpecifics = IOSNotificationDetails();
NotificationDetails platformChannelSpecifics =
NotificationDetails(androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin.schedule(
id, '$title', ' $body', scheduledNotificationDateTime, platformChannelSpecifics,
androidAllowWhileIdle: true);
}
Future<void> removeNotifications() async {
await flutterLocalNotificationsPlugin.cancelAll();
}
}
NotificationPlugin notificationPlugin = NotificationPlugin._();
然后你可以打电话
await notificationPlugin.showScheduledNotification(
id: 123,
title:"fancy title",
body: "data",
date: yourDate,
);
/////////////////////////////////////////////如果您不使用助手za2f2f2ed4ebc2cbbbbb4c21a21a29dc40ab61dz
var scheduledNotificationDateTime = DateTime.parse(date); // replace whith your date
var androidPlatformChannelSpecifics = AndroidNotificationDetails(
'your other channel id', 'your other channel name', 'your other channel description');
var iOSPlatformChannelSpecifics = IOSNotificationDetails();
NotificationDetails platformChannelSpecifics =
NotificationDetails(androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin.schedule(
id, '$title', ' $body', scheduledNotificationDateTime, platformChannelSpecifics,
androidAllowWhileIdle: true);
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