<navigation-bar title="Weixin" back="{{false}}" color="black" background="#FFF"></navigation-bar>
<scroll-view class="scroll-area" type="list" scroll-y>
  <view bind:tap="changeCode">点击哦</view>
  <image src="{{codeUrl}}" show-menu-by-longpress="{{true}}" />
</scroll-view>

Page({
  data: {
    codeUrl:'https://wework.qpic.cn/wwpic3az/185646_a2Jej-wzSMKRf2g_1723627957/0'
  },
  onLoad() {
  },
  changeCode(){
    console.log(123)
    this.setData({
      codeUrl:'https://wework.qpic.cn/wwpic/191350_hBpCXPIRQhiBRxS_1664336234/0'
    })
  }
})