同一页面上的ionic3多个滑动器滑块 [英] ionic3 multiple swiper sliders on samepage

问题描述

我正在使用 ionic 3，同时在同一页面上放置 3 个滑动器滑块我无法单独控制它们的行为我对 angular js 以及 ts 和 ionic 有点新

这里是代码

<ion-slide style="background-color: green" *ngFor="让帖子发帖"><h1>{{post.title}}</h1><img [src]="post.image"/></离子载玻片></离子载玻片><ion-slide style="background-color: green" *ngFor="让帖子发帖"><h1>{{post.title}}</h1><img [src]="post.image"/></离子载玻片></离子载玻片>

ts 是

 @ViewChild(Slides) 幻灯片:幻灯片；goToSlide() {this.slides.slideTo(2, 500);}ngAfterViewInit() {//this.slides.freeMode = true;this.slides .slidesPerView=3,this.slides.spaceBetween=5;//this.slides.loop=true;}

解决方案

你可以使用 ViewChildren 代替 ViewChild 来获取该页面中滑块的所有实例(

就像你在 plunker 中看到的那样，我们获取了滑块的所有实例，然后我们只使用它的索引获取目标实例:

import { Component, ViewChildren, QueryList } from '@angular/core';从 'ionic-angular' 导入 { NavController, Content, Slides }；@零件({...})导出类主页 {@ViewChildren(Slides) 幻灯片:QueryList<Slides>;构造函数(){}公共移动(索引:数字):无效{this.slides.toArray()[index].slideNext(500);}}

然后在视图中:

<ion-header><离子导航栏><ion-title>离子演示</ion-title></离子导航栏></离子头><离子含量填充><ion-slides style="height: 75px" 寻呼机><ion-slide><h1>Slide 1</h1></ion-slide><ion-slide><h1>Slide 2</h1></ion-slide><ion-slide><h1>Slide 3</h1></ion-slide></离子载玻片><ion-slides style="height: 75px" 寻呼机><ion-slide><h1>Slide 1</h1></ion-slide><ion-slide><h1>Slide 2</h1></ion-slide><ion-slide><h1>Slide 3</h1></ion-slide></离子载玻片><ion-slides style="height: 75px" 寻呼机><ion-slide><h1>Slide 1</h1></ion-slide><ion-slide><h1>Slide 2</h1></ion-slide><ion-slide><h1>Slide 3</h1></ion-slide></离子载玻片><离子行><离子色谱><button (click)="move(0)" ion-button text-only>首先移动</button></ion-col><离子色谱><button (click)="move(1)" ion-button text-only>第二个移动</button></ion-col><离子色谱><button (click)="move(2)" ion-button text-only>第三个移动</button></ion-col></离子行></离子含量>

I am using ionic 3 while placing 3 swiper sliders on same page i am unable to control their behavior separately i am bit new for angular js as well ts and ionic

here is code

<ion-slides style="height: 30%;" pager>
  <ion-slide style="background-color: green" *ngFor="let post of posts">
    <h1>{{post.title}}</h1>
    <img [src]="post.image" />
  </ion-slide>
</ion-slides>


<ion-slides style="height: 30%;" pager>
  <ion-slide style="background-color: green" *ngFor="let post of posts">
    <h1>{{post.title}}</h1>
    <img [src]="post.image" />
  </ion-slide>
</ion-slides>

ts is

 @ViewChild(Slides) slides: Slides;

  goToSlide() {
    this.slides.slideTo(2, 500);

  }

   ngAfterViewInit() {
    //this.slides.freeMode = true;
    this.slides .slidesPerView=3,
    this.slides.spaceBetween=5;
    //this.slides.loop=true;
  }

解决方案

Instead of ViewChild, you can use ViewChildren to get all the instances of the slider in that page (Angular docs). Please take a look at this working plunker. The end result would be something like this:

Like you can see in the plunker, we get all the instances of the slider, and then we just get the target instance by using its index:

import { Component, ViewChildren, QueryList } from '@angular/core';
import { NavController, Content, Slides } from 'ionic-angular';

@Component({...})
export class HomePage {
  @ViewChildren(Slides) slides: QueryList<Slides>;

  constructor() {}

  public move(index: number): void {
    this.slides.toArray()[index].slideNext(500);
  }      

}

An then in the view:

<ion-header>
  <ion-navbar>
    <ion-title>Ionic Demo</ion-title>
  </ion-navbar>
</ion-header>

<ion-content padding>

  <ion-slides style="height: 75px" pager>
    <ion-slide><h1>Slide 1</h1></ion-slide>
    <ion-slide><h1>Slide 2</h1></ion-slide>
    <ion-slide><h1>Slide 3</h1></ion-slide>
  </ion-slides>

  <ion-slides style="height: 75px" pager>
    <ion-slide><h1>Slide 1</h1></ion-slide>
    <ion-slide><h1>Slide 2</h1></ion-slide>
    <ion-slide><h1>Slide 3</h1></ion-slide>
  </ion-slides>

  <ion-slides style="height: 75px" pager>
    <ion-slide><h1>Slide 1</h1></ion-slide>
    <ion-slide><h1>Slide 2</h1></ion-slide>
    <ion-slide><h1>Slide 3</h1></ion-slide>
  </ion-slides>

  <ion-row>
    <ion-col>
      <button (click)="move(0)" ion-button text-only>Move First</button>
    </ion-col>
    <ion-col>
      <button (click)="move(1)" ion-button text-only>Move Second</button>
    </ion-col>
    <ion-col>
      <button (click)="move(2)" ion-button text-only>Move Third</button>
    </ion-col>
  </ion-row>

</ion-content>

这篇关于同一页面上的ionic3多个滑动器滑块的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！