安卓兼容

解决H5在移动端软键盘弹出时底部fixed定位被顶上去的问题

https://www.jianshu.com/p/51f828f1431f

 onResizeListen() {
      //adapter:解决安卓部分机型,input获取焦点弹出键盘后把fixed的元素顶上去的问题
      const height = window.document.body.clientHeight
      window.onresize = () => {
        this.footerVisible = window.document.body.clientHeight >= height
      }
    }