Flutter Push Notification iOS AppDelegate.swift

we need to put a different kind of code in AppDelegate.swit for iOS push notification. Flutter default code is not enough this.

import UIKit
import Flutter

@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
              }
    GeneratedPluginRegistrant.register(with: self)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
  override func applicationDidEnterBackground(_ application: UIApplication){
           application.applicationIconBadgeNumber = 0
        }
}

We did two things here, first we added support for older device.

 if #available(iOS 10.0, *) {
                UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
              }

and we also added support for background notification badge

  override func applicationDidEnterBackground(_ application: UIApplication){
           application.applicationIconBadgeNumber = 0
        }