ionic 2 page change event

Question

I want to execute some code every time the page changes.

I could add add an ngOnDestroy method to every page. It appears that I could use Ionic 2 page lifec

Answer 1

You can use plain old Javascript to be placed in app.component.ts. Assuming that you use Ionic2-RC0:

import { Component } from '@angular/core';
import { Platform } from 'ionic-angular';
import { StatusBar } from 'ionic-native';

import { YourPage } from '../pages/yourpage/yourpage';

@Component({
  template: ``
})
export class MyApp {
  rootPage = YourPage;

  constructor(platform: Platform) {
    platform.ready().then(() => {

      // Okay, so the platform is ready and our plugins are available.
      // Here you can do any higher level native things you might need.
      StatusBar.styleDefault();
      window.addEventListener('load', () =>{
         console.log('page changed');
      });
    });
  }

Every time you change page using the NavController, you'll have page changed printed out in the console.