如何在ionic中获取当前幻灯片的索引？

<ion-slides #slides>
  <ion-slide>
    Slide 1
  </ion-slide>
  <ion-slide>
    Slide 2
  </ion-slide>
  <ion-slide>
    Slide 3
  </ion-slide>
</ion-slides>

import { Component, ViewChild } from '@angular/core';
import { IonSlides } from '@ionic/angular';

@Component({
  selector: 'app-slides',
  templateUrl: './slides.page.html',
  styleUrls: ['./slides.page.scss'],
})
export class SlidesPage {
  @ViewChild('slides', { static: true }) slides: IonSlides;
  currentIndex: number;

  constructor() { }

  // 在ionViewDidEnter生命周期钩子中获取当前幻灯片的索引
  ionViewDidEnter() {
    this.slides.getActiveIndex().then(index => {
      this.currentIndex = index;
      console.log('Current slide index:', this.currentIndex);
    });
  }
}