http.ts

import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams } from 'ionic-angular';
import { HttpClient } from '@angular/common/http';

@IonicPage()
@Component({
  selector: 'page-http-test',
  templateUrl: 'http-test.html',
})
export class HttpTestPage {

  constructor(public navCtrl: NavController, public navParams: NavParams, private http: HttpClient) {
  }

  ionViewDidLoad() {
    console.log('ionViewDidLoad HttpTestPage');
  }

}