来自另一个控制器的离子2调用功能

Question

我需要在另一个控制器中调用 ,有可能吗？functionionic 2

在我的代码下面,我想调用loadPeople标签控制器.

home.ts

import { Component } from '@angular/core';

import { NavController } from 'ionic-angular';
import {PeopleService} from '../../providers/people-service/people-service';
@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {

  constructor(public navCtrl: NavController,public peopleService: PeopleService) {
   this.loadPeople();
  }

 loadPeople(){
  this.peopleService.load()
  .then(data => {
  this.people = data;
  });
 }

}

tabs.ts

import { Component } from '@angular/core';

import { HomePage } from '../home/home';
import { AboutPage } from '../about/about';
import { ContactPage } from '../contact/contact';

@Component({
  templateUrl: 'tabs.html'
})
export class TabsPage {
  // this tells the tabs component which Pages
  // should be each tab's root Page
  tab1Root: any = HomePage;
  tab2Root: any = AboutPage;
  tab3Root: any = ContactPage;

  constructor() {

  }
}

在tabs.ts我想调用选项卡上的loadPeople功能,我该怎么做？

Answer 1

有几种选择.一种方法是将您的函数loadPeople()放入服务类,该服务类可从所有组件访问.

另一种方法是使用Ionic Events来触发组件之间的函数调用.例如,如果选项卡调用函数tabSelected(),则可以在此函数中触发事件:

tabSelected() {
  this.events.publish('functionCall:tabSelected', anyAdditionalData);
}

并听取它home.ts并loadPeople()在事件被触发时调用:

this.events.subscribe('functionCall:tabSelected', eventData => { 
  this.loadPeople();
});

您甚至可以使用该事件发送数据(此处:) anyAdditionalData.

Answer 2

您需要做的就是将函数定义为静态并使用类名调用该函数。

例如：

class A{
 static f1(){
  console.log("funtion1");
 }
}

class B{
  classA.f1();
}

希望它能起作用