微信小程序swiper高度自适应方法

小程序swiper高度自适应

     data: {   //图片    hdimg: [],    //是否采用衔接滑动    circular: true,    //是否显示画板指示点    indicatorDots: false,    //选中点的颜色    indicatorcolor: "#000",    //是否竖直    vertical: false,    //是否自动切换    autoplay: false,    //滑动动画时长毫秒    duration: 100,    //所有图片的高度    imgheights: [],    //图片宽度    imgwidth: 750,    //默认    current:0  },

imageLoad: function (e) {    //获取图片真实宽度    var imgwidth = e.detail.width,      imgheight = e.detail.height,      //宽高比      ratio = imgwidth / imgheight;    console.log(imgwidth, imgheight)    //计算的高度值    var viewHeight = 750 / ratio;    var imgheight = viewHeight    var imgheights = this.data.imgheights    //把每一张图片的高度记录到数组里    imgheights.push(imgheight)    this.setData({      imgheights: imgheights,    })  },  bindchange: function (e) {    console.log(e.detail.current)    this.setData({ current: e.detail.current})  }

<view>  <swiper class="swiper" indicator-dots="{{indicatorDots}}" vertical="{{vertical}}" autoplay="{{autoplay}}" duration="{{duration}}" bindchange="bindchange"  circular="{{circular}}" style="height:{{imgheights[current]}}rpx;">    <block wx:for="{{hdimg}}" wx:key="{{index}}">      <swiper-item >        <image src="{{item}}" mode="aspectFit" bindload="imageLoad"               class=".itemimage" style="height:{{imgheights[current]}}rpx;width:{{imgwidth}}rpx;"/>      </swiper-item>    </block>  </swiper></view>

.swiper {  width: 100%;}