miaoguo_master/pages/index/index.wxml

<view class="container FlexColumn" style='min-height:{{Containnerheight}}rpx;'>
  <image src='../images/program_start_footer.png' class="program_start_footer" />
  <text class="text1">{{Sentence}}</text> 
  <view class="btn" wx:if="{{IsRefresh}}" bindtap='onPullDownRefresh'>重启小程序</view> 
</view>