ios部分手机调用微信wx.previewImage方法后，返回页面标题消失

机型：iPhone6  系统：9.3.3  微信版本：7.0.4  有问题的是H5页面，作为公众号在微信中打开。调用微信的wx.previewImage()方法，实现查看放大图片功能

<template>     <div class="shop-photo">         <ul class="photo-box">             <li v-for="(item, index) in imgArr"                 :key="index" ref="imgW" :style="{height:img_h}">                  <div class="img-bg" :style="{background: 'url(' + item.small_img_url + ') no-repeat top center', backgroundSize:'cover'}" ></div>                 <img v-lazy ="item.small_img_url" :key="item.small_img_url" @click="lookImg(index,item.img_url)"/>             </li>         </ul>     </div> </template> <script>     export default {       name: 'shopPhoto',         data () {             return {                 img_h:"",                 imgArr:JSON.parse(sessionStorage.getItem('img_list')),                 imgApp:[],                 is_error:false,                 wait_text:"正在加载……",                 headData:{                     visible:"1",                     leftVisible:"1",                     headMsg:'商家相册'                 }             }         },         methods:{             lookImg(index,curr_url){                     this.$shareJs.getWxAuthIfs();                     this.$shareJs.showImg(this.imgApp,curr_url);             },             // 整理图片             getImgApp(){                 for(var i = 0; i<this.imgArr.length; i++){                     this.imgApp.push(this.imgArr[i].img_url)                 }             }         },         mounted(){             this.getImgApp();         }     } </script>

showImg(imgUrl,curr_url) {      wx.previewImage({         current:curr_url, // 当前显示图片的http链接         urls: imgUrl // 需要预览的图片http链接列表      }); },

你好，麻烦提供出现问题的具体机型，能复现问题的代码片段（https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html）

你是不是页面标题赋值再Onload里面啦！改成字Onshow方法中重新复制试试