Event that gets triggered even before (ionSelect)?

I am looking for the event that gets triggered even before (ionSelect). Which is as soon as user clicks on tab.
Did anyone found solution already?


// create loading message
var loading = this.loadingCtrl.create({
  content: 'Tab changed..'

// show loading message

// dismiss loading message


<ion-tab [root]="tab3Root" tabTitle="Traits" tabIcon="analytics" [rootParams]="flock" (ionSelect)="tabSelectMethod()"></ion-tab>
<ion-tab [root]="tab7Root" tabTitle="Graph" tabIcon="analytics" (ionSelect)="tabSelectMethod()"></ion-tab>

Current issue is that the tab gets highlighted only after loading entire content.