在Ionic 3中如何在Modal中传递和获取数据？

<ion-content>
  <ion-item>
    <ion-label>传递的数据：{{data}}</ion-label>
  </ion-item>
  <button ion-button (click)="closeModal()">关闭Modal</button>
</ion-content>

import { Component, Input, Output, EventEmitter } from '@angular/core';
import { NavParams, ViewController } from 'ionic-angular';

@Component({
  selector: 'page-modal',
  templateUrl: 'modal.html',
})
export class ModalPage {
  @Input() data: any; // 接收传递的数据
  @Output() dataUpdated: EventEmitter<any> = new EventEmitter<any>(); // 用于传递处理后的数据

  constructor(public navParams: NavParams, public viewCtrl: ViewController) {
    this.data = this.navParams.get('data'); // 获取传递过来的数据
  }

  closeModal() {
    // 处理数据后，通过事件将数据传递回父页面
    this.dataUpdated.emit('处理后的数据');
    this.viewCtrl.dismiss();
  }
}

import { Component } from '@angular/core';
import { ModalController } from 'ionic-angular';
import { ModalPage } from '../modal/modal';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {

  constructor(public modalCtrl: ModalController) {}

  openModal() {
    let modal = this.modalCtrl.create(ModalPage, {data: '传递的数据'});
    
    // 订阅事件，获取处理后的数据
    modal.onDidDismiss(data => {
      console.log('处理后的数据：', data);
    });
    
    modal.present();
  }
}