How to do $scope.$apply() in ionic2

Hello, someone know which is the equivalent of “$scope.$apply” in ionic2, i know that this functionality in angular 2 is implemented like the bellow code but i tried adapt it in ionic 2 and i fail run it correctly.

import {Component, LifeCycle, NgZone} from ‘angular2/angular2’

selector: ‘my-app’,
template: <div> Hello world!!! Time: {{ time }}. </div>
export class App {
time: number = 0;

constructor(lc: LifeCycle, zone: NgZone) {
zone.runOutsideAngular(() => {
setInterval(() => {
this.time =;

    lc.tick(); // comment this line and "time" will stop updating
  }, 1000);

doCheck() {

this code I found it in this topic in

Thanks, i hope your answers.