https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html

<wx-open-launch-weapp id="launch-btn" username="gh_d31a2ce0f2f3" path="">

<script type="text/wxtag-template">

<div style="position:relative;width: 200px;text-align: center;vertical-align: middle;">

     <span style="display: block;;font-size: 24px;color: #FD5D5F;">打开小程序</span>

    </div>

</script>

</wx-open-launch-weapp>

签名成功了的 ios没有问题 安卓就一直不显示