how to set notificaton badge number when app background/closed in ios

it work perfectly when app foreground and not work when app background and closed. my code:

onNotification: (notification) => {
                Device.detectNotification({"data_extra onNotification DEBUG DATA ":notification});
                if(Platform.OS === "ios")
                {
                    if(notification.message.notification_id){
                        if ( notification.foreground ){
                            // alertDropDown IOS 
                            ios_noti_data = notification.message;
                            this.dropdown.alertWithType('custom', notification.message.title, notification.message.body);
                        }
                    }
                    
                }
                // set badge number icon app
                let notification_redux = store.getState();
                if (  Platform.OS === 'ios' ){
                    PushNotificationIOS.setApplicationIconBadgeNumber(notification_redux.notification_badge+1)
                }else{
                    RNBadgerAndroid.setBadge(notification_redux.notification_badge+1)
                }
                // count number natification unread to notification badge
                setTimeout(()=> { 
                    NotificationAPI.getNotificationUnRead()
                },1000)

                // process the notification
                // Handle When User Tap on notification forceground Android
                const clicked = notification.userInteraction;
                if (clicked ) {
                    Device.detectNotification({"data_extra userInteraction ":notification});
                    let nofify_data;
                    if (Platform.OS === "ios"){
                        nofify_data = notification.message;
                    }else{
                        nofify_data = notification;   
                    }
                    _handleNavigateScreenForSubUrl(nofify_data);
                }
                notification.finish(PushNotificationIOS.FetchResult.NoData);
            },

[MarkRamsden]

Ok not obvious but eventually get to the bottom of it. look here https://github.com/zo0r/react-native-push-notification/blob/master/trouble-shooting.md you need to send silent or mixed notifications

[alexfov]

1. You need @react-native-firebase/messaging
2. use content_available: true when you send push from server
3. Catch messages with https://rnfirebase.io/messaging/usage#background--quit-state-messages
4. Write your badge update logic using PushNotificationIOS.setApplicationIconBadgeNumber()

Finally I managed to solve the problem/