swiper开发指导
==========

swiper为滑动容器，提供切换显示子组件的能力。具体用法请参考[swiper](https://developer.huawei.com/consumer/cn/doc/harmonyos-references/js-components-container-swiper)。

#### 创建swiper组件

在pages/index目录下的hml文件中创建一个swiper组件。

<!-- xxx.hml-->
<div class="container">
  <swiper>
    <div class="item" style="background-color: #bf45ea;">
      <text>item1</text>
    </div>
    <div class="item" style="background-color: #088684;">
      <text>item2</text>
    </div>
    <div class="item" style="background-color: #7786ee;">
      <text>item3</text>
    </div>
  </swiper>
</div>

/\* xxx.css \*/
.container{
  width: 100%;
  height: 100%;
  flex-direction: column;
  background-color: #F1F3F5;
  align-items: center;
  justify-content: center;
  width: 100%;
}
swiper{
  height: 30%;
}
.item{
  width: 100%;
  height: 500px;
}
text{
  width: 100%;
  height: 100%;
  text-align: center;
  font-size: 50px;
  color: white;
}

![](https://contentcenter-vali-drcn.dbankcdn.cn/pvt_2/DeveloperAlliance_scene_100_1/f0/v3/5VrNTuG3TMec-MIVXbBNKw/zh-cn_image_0000002594668296.gif?HW-CC-KV=V1&HW-CC-Date=20260612T073320Z&HW-CC-Expire=86400&HW-CC-Sign=98AF26614FE224BA1772909E73F7A0ED72FFD8BB24041EAF652C22706F5F4D55)

![](https://contentcenter-vali-drcn.dbankcdn.cn/pvt_2/DeveloperAlliance_scene_100_1/7c/v3/hl2nif0uR2eT-5dfb7robQ/note_3.0-zh-cn.png?HW-CC-KV=V1&HW-CC-Date=20260612T073320Z&HW-CC-Expire=86400&HW-CC-Sign=9E7B104B99B55AD39D2DEEF5C9FBA113DBEFB5084905FE138613555E092C8E23)

swiper组件支持除<list>之外的子组件。

#### 添加属性

在swiper组件不开启循环播放（loop="false"）时添加自动播放属性（autoplay），设置自动播放时播放时间间隔（interval），页面会自动切换并停留在最后一个子组件页面。添加digital属性启用数字导航点，设置切换时为渐隐滑动效果（scrolleffect="fade"）。

<!-- xxx.hml-->
<div class="container">
  <swiper index="1"  autoplay="true" interval="2000" indicator="true" digital="true" duration="500"
  scrolleffect="fade" loop="false">
    <div class="item" style="background-color: #bf45ea;">
      <text>item1</text>
    </div>
    <div class="item" style="background-color: #088684;">
      <text>item2</text>
    </div>
    <div class="item" style="background-color: #7786ee;">
      <text>item3</text>
    </div>
    <div class="item" style="background-color: #c88cee;">
      <text>item4</text>
    </div>
  </swiper>
</div>

/\* xxx.css \*/
.container{
  width: 100%;
  height: 100%;
  flex-direction: column;
  background-color: #F1F3F5;
  align-items: center;
  justify-content: center;
}
swiper{
  height: 30%;
}
.item{
  width: 100%;
  height: 500px;
}
text{
  width: 100%;
  height: 100%;
  text-align: center;
  font-size: 50px;
  color: white;
}

![](https://contentcenter-vali-drcn.dbankcdn.cn/pvt_2/DeveloperAlliance_scene_100_1/ea/v3/Ni24Ss0WSwifb-q33XyAVA/zh-cn_image_0000002594828224.gif?HW-CC-KV=V1&HW-CC-Date=20260612T073320Z&HW-CC-Expire=86400&HW-CC-Sign=5FE9E5642EE3CDE6B53572DA8033D5E2BDA982558F8504E40DF1FC4C8A0493D9)

![](https://contentcenter-vali-drcn.dbankcdn.cn/pvt_2/DeveloperAlliance_scene_100_1/cd/v3/p5ZqYVxpRoyjY6OS-miijw/note_3.0-zh-cn.png?HW-CC-KV=V1&HW-CC-Date=20260612T073320Z&HW-CC-Expire=86400&HW-CC-Sign=E22FAEDD3D9214E2CE00AC4DA43BFA5916392FD9B83E8864EE76050E633CBB39)

*   设置indicator（是否启用导航点指示器）属性为true时digital（是否启用数字导航点）属性才会生效。
    
*   swiper子组件的个数大于等于2时设置的loop属性才会生效。
    
*   scrolleffect属性仅在loop属性值为false时生效。
    

#### 设置样式

设置swiper组件的宽高，导航点指示器的直径大小（indicator-size）、颜色（indicator-color）、相对位置（indicator-top）及选中时的颜色（indicator-selected-color）。

<!-- xxx.hml-->
<div class="container">
    <swiper index="1" autoplay="true" interval="2000"  duration="500" >
        <div class="item" style="background-color: bisque;">
            <text>item1</text>
        </div>
        <div class="item" style="background-color: darkkhaki;">
            <text>item2</text>
        </div>
        <div class="item" style="background-color: cadetblue;">
            <text>item3</text>
        </div>
    </swiper>
</div>

/\* xxx.css \*/
.container{
  width: 100%;
  height: 100%;
  flex-direction: column;
  background-color: #F1F3F5;
  align-items: center;
  justify-content: center;
}
swiper{
  width:  500px;
  height: 500px;
  border-radius: 250px;
  indicator-color: white;
  indicator-selected-color: blue;
  indicator-size: 40px;
  indicator-top: 100px;
  overflow: hidden ;
}
.item{
  width: 100%;
  height: 500px;
}
text{
  width: 100%;
  text-align: center;
  margin-top: 150px;
  font-size: 50px;
  color: white;
}

![](https://contentcenter-vali-drcn.dbankcdn.cn/pvt_2/DeveloperAlliance_scene_100_1/87/v3/jDJpqtKdTcaMg3gqW5t4Kg/zh-cn_image_0000002625187671.gif?HW-CC-KV=V1&HW-CC-Date=20260612T073320Z&HW-CC-Expire=86400&HW-CC-Sign=EA6DA1E3EF11ECD60C001E632158DBC8967060A7AA98C28F27B9059BF955DA07)

#### 绑定事件

创建两个text组件添加点击事件，当点击后就调用showPrevious（显示上一个子组件）或showNext（显示下一个子组件）方法。添加select组件下拉选择时触发change事件后调用swipeTo方法跳转到指定轮播页面。swiper组件绑定change（当前显示的组件索引变化时触发）和finish（切换动画结束时触发）事件。

<!-- xxx.hml-->
<div class="container">
  <swiper interval="2000" onchange="change" loop="false" onanimationfinish="finish" id="swiper">
    <div class="item" style="background-color: #bf45ea">
      <text>item1</text>
    </div>
    <div class="item" style="background-color: #088684;">
      <text>item2</text>
    </div>
    <div class="item" style="background-color: #7786ee;">
      <text>item3</text>
    </div>
    <div class="item" style="background-color: #c88cee;">
      <text>item4</text>
    </div>
  </swiper>
  <div class="content">
      <button class="pnbtn" onclick="previous">Previous</button>
      <select onchange="selectChange">
          <option value="0">swipeTo 1</option>
          <option value="1">swipeTo 2</option>
          <option value="2">swipeTo 3</option>
          <option value="3">swipeTo 4</option>
      </select>
    <button class="pnbtn" onclick="next">Next</button>
  </div>
</div>

/\* xxx.css \*/
.container{
  width: 100%;
  height: 100%;
  flex-direction: column;
  background-color: #F1F3F5;
  align-items: center;
  justify-content: center;
}
swiper{
  height: 30%;
}
.item{
  width: 100%;
  height: 500px;
}
text{
  width: 100%;
  height: 100%;
  text-align: center;
  font-size: 50px;
  color: white;
}
select{
  background-color: white;
  width: 250px;
  height: 80px;
}
.content{
  margin-top: 100px;
  justify-content: space-around;
}
.pnbtn{
  width: 200px;
  height: 80px;
  font-size: 30px;
}

// xxx.js
import promptAction from '@ohos.promptAction';
export default{
  change(e){
    promptAction.showToast({duration:2000,message:"current index:"+e.index});
  },
  finish(){
    promptAction.showToast({duration:2000,message:"切换动作结束"});
  },
  selectChange(e){
    this.$element('swiper').swipeTo({index: Number(e.newValue)});
  },
  previous(){
    this.$element('swiper').showPrevious();
  },
  next(){
    this.$element('swiper').showNext();
  }
}

![](https://contentcenter-vali-drcn.dbankcdn.cn/pvt_2/DeveloperAlliance_scene_100_1/e0/v3/G2JaomkyRKWo1pTZUFgBaQ/zh-cn_image_0000002625107815.gif?HW-CC-KV=V1&HW-CC-Date=20260612T073320Z&HW-CC-Expire=86400&HW-CC-Sign=668B34B283F026BD6BB1D5A0FA8B9150FE57BA57FCE1A12DB9204CE5F348A695)

#### 场景示例

本场景中使用swiper创建一个轮播图，在轮播图底部制作一个缩略图，点击缩略图后调用swipeTo方法切换到对应的轮播图。

<!-- xxx.hml-->
<div class="container">
  <swiper duration="500" indicator="false" id="swiper" onchange="change">
    <div class="item" for="item in list">
      <image src="{{item.src}}"></image>
    </div>
  </swiper>
  <div class="content">
    <div class="content\_item {{index == $idx?'activated':''}}" for="item in list" onclick="imageTo({{$idx}})">
      <image src="{{item.src}}"></image>
    </div>
  </div>
</div>

/\* xxx.css \*/
.container{
  flex-direction: column;
  background-color: #F1F3F5;
  align-items: center;
  justify-content: center;
  width: 100%;
}
swiper{
  width: 100%;
  height: 500px;
}
.item{
  width: 100%;
  height: 500px;
}
.content{
  margin-top: -120px;
  width: 70%;
  display: flex;
  justify-content: space-around;
  height: 100px;
}
.content\_item{
  padding: 5px;
  transform: scale(0.5);
}
.activated{
  transform: scale(1);
  border: 1px solid #b20937ea;
}

// xxx.js
export default {
  data:{
    index: 0,
    list:\[
      {src: 'common/images/1.png'},
      {src: 'common/images/2.png'},
      {src: 'common/images/3.png'},
      {src: 'common/images/4.png'},\]
    },
  imageTo(index){
    this.index = index;
    this.$element('swiper').swipeTo({index: index});
  },
  change(e){
    this.index = e.index;
  }
}

![](https://contentcenter-vali-drcn.dbankcdn.cn/pvt_2/DeveloperAlliance_scene_100_1/25/v3/Tz3C55lPQI2whgWFpAfvhg/zh-cn_image_0000002594668298.gif?HW-CC-KV=V1&HW-CC-Date=20260612T073320Z&HW-CC-Expire=86400&HW-CC-Sign=2DCE40EA4FB359938B53327CA45D5605BA2EF0AFDFA77871D7D958EBF36F4325)