Flutter 本地通知无法显示

Question

我正在尝试使用flutter_local_notifications: ^9.7.0包显示本地通知。 到目前为止，当我在使用 iphone 13 pro max 的 ios 模拟器中尝试时，它可以正常工作，但是当我在 iphone 8 中调试时，无法显示通知。这是代码 AppDelegate.swift 的一部分：

....

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    if #available(iOS 10.0, *) {
      UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
      }
....
....
....
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}

以及显示通知的代码：

Future<void> showNotifications() async {
    await flutterLocalNotificationsPlugin.show(
      21,
      "Title",
      "Subtitle",
      NotificationDetails(android: _androidNotificationDetails),
    );
  }

Future<void> init() async {
    final AndroidInitializationSettings initializationSettingsAndroid =
        AndroidInitializationSettings('@mipmap/ic_launcher');

    final IOSInitializationSettings initializationSettingsIOS =
        IOSInitializationSettings(
            requestSoundPermission: false,
            requestBadgePermission: false,
            requestAlertPermission: false,
           );

    final InitializationSettings initializationSettings =
        InitializationSettings(
            android: initializationSettingsAndroid,
            iOS: initializationSettingsIOS,
            macOS: null);

    tz.initializeTimeZones();

    await flutterLocalNotificationsPlugin.initialize(initializationSettings,
        onSelectNotification: selectNotification);
  }

我在 IOS 设置部分阅读了文档（ https://pub.dev/packages/flutter_local_notifications ），其中指出：

For older versions of iOS, you need to handle the callback as part of specifying the method that should be fired to the onDidReceiveLocalNotification argument when creating an instance IOSInitializationSettings object that is passed to the function for initializing the plugin.

但我不知道如何配置它，有没有办法做到这一点，以便通知也可以显示在 iphone 8 中？

Answer 1

就像文档说在创建设置时传递回调一样。

final IOSInitializationSettings initializationSettingsIOS =
      IOSInitializationSettings(
  requestSoundPermission: false,
  requestBadgePermission: false,
  requestAlertPermission: false,
  onDidReceiveLocalNotification: onDidReceiveLocalNotification,
);

...

void onDidReceiveLocalNotification(int id, String title, String body, String payload) async {
...
}