名称'IOSNotificationDetails'不是类。尝试更正名称以匹配现有类

Question

• *我实际上在关注YouTuber中的Flutter本地通知，链接是：Flutter Local Notification

我使用的是windows笔记本电脑和android模拟器，我还更新了build.gradle文件。出现错误

var iOSPlatformChannelSpecifics=新IOSNotificationDetails((；

在displayNotification方法中。有人能帮我吗？

这是代码片段代码段

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:get/get.dart';
class NotifyHelper {
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
FlutterLocalNotificationsPlugin(); //
initializeNotification() async {
//tz.initializeTimeZones();
final DarwinInitializationSettings initializationSettingsDarwin =
DarwinInitializationSettings(
onDidReceiveLocalNotification: onDidReceiveLocalNotification);
final AndroidInitializationSettings initializationSettingsAndroid =
const AndroidInitializationSettings("appicon");
final InitializationSettings initializationSettings =
InitializationSettings(
iOS: initializationSettingsDarwin,
android: initializationSettingsAndroid,
);
await flutterLocalNotificationsPlugin.initialize(initializationSettings,
onDidReceiveNotificationResponse: onDidReceiveNotificationResponse);
}
displayNotification({required String title, required String body}) async {
print("doing test");
var androidPlatformChannelSpecifics = new AndroidNotificationDetails(
'your channel id', 'your channel name',
importance: Importance.max, priority: Priority.high);
var iOSPlatformChannelSpecifics = new IOSNotificationDetails();
// ignore: unnecessary_new
var platformChannelSpecifics = new NotificationDetails(
android: androidPlatformChannelSpecifics,
iOS: iOSPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin.show(
0,
'You change your theme',
'You changed your theme back !',
platformChannelSpecifics,
payload: 'It could be anything you pass',
);
}
void requestIOSPermissions() {
flutterLocalNotificationsPlugin
.resolvePlatformSpecificImplementation<
IOSFlutterLocalNotificationsPlugin>()
?.requestPermissions(
alert: true,
badge: true,
sound: true,
);
}
void onDidReceiveNotificationResponse(
NotificationResponse notificationResponse) async {
final String? payload = notificationResponse.payload;
if (notificationResponse.payload != null) {
debugPrint('notification payload: $payload');
} else {
debugPrint("Notification Done");
}
Get.to(() => Container(
color: Colors.white,
));
}
/*Future selectNotification(String? payload) async {
if (payload != null) {
print('notification payload: $payload');
} else {
print("Notification Done");
}
Get.to(() => Container(
color: Colors.white,
));
}*/
Future onDidReceiveLocalNotification(
int id, String? title, String? body, String? payload) async {
// display a dialog with the notification details, tap ok to go to another page
/*showDialog(
//context: context,
builder: (BuildContext context) => CupertinoAlertDialog(
title: Text(title),
content: Text(body),
actions: [
CupertinoDialogAction(
isDefaultAction: true,
child: Text('Ok'),
onPressed: () async {
Navigator.of(context, rootNavigator: true).pop();
await Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SecondScreen(payload),
),
);
},
)
],
),
);*/
Get.dialog(const Text("Wellcome to flutter"));
}
}

Answer 1

检查包的更改日志。版本10.0.0引入了一些突破性的更改，您所遵循的指南可能更早。

例如：

[iOS][macOS]突破性的更改iOS和macOS类已被重命名和重构，因为它们基于相同的操作系统并共享相同的通知API。这些类现在被带有Darwin前缀的类所取代，而不是具有IOS或MacOS前缀。例如，IOSInitializationSettings可以替换为DarwinInitializationSettings

因此，对于您当前的问题，解决方案可能使用DarwinNotificationDetails而不是IOSNotificationDetails。但也可能存在其他问题。