Calling a web service when InAppBrowser is closed


I trying to call a web service after the InAppBrowser window is closed. But I am not able to do so. As per my understanding, the ionViewWillEnter() is called everytime when the app enter the view, so the method I am calling is put inside the ionViewWillEnter(). But when the InAppBrowser is closed, the ionViewWillEnter() is not getting called.

Thanks in advance