Page content doesn't refresh on event

Ionic Framework ionic-v3
1

I’m using the push notification plugin and I fire an event to refresh the page data when the notification is clicked.
In the page constructor I connected the event to the function that reloads the data

    this.events.subscribe('main:get', () => {
            this.refreshData();
        });

and

refreshData(refresher=null) {
        this.http.get(`http://....`)
        .map(res => res.json())
        .subscribe(
            data => this.data = data,
            err => this.error = err,
            () => {
                if(refresher) refresher.complete();
            }
        );
    }

now when I refresh using ion-refresher everything works fine but when I call it from the event the page doesn’t update even if the data changes, also as soon as I click on the menu icon the content of the page is refreshed

2

don’t know if it’s the proper way to do it but I’ve fixed it calling ChangeDetectorRef detectChanges() when the http request completes