dd_jx_xcx/pages/index/begin/begin.axml

<view>
  <view class="noData flex-box-v flex-center-center">
    <image mode="scaleToFill" src="../../../image/logo.png" class="initImg"/>
    <text class="text">{{msg}}</text>
    <button type="primary" a:if="{{num==3}}" class="btn" catchTap="loginAll">同步企业信息</button>
  </view>
</view>