textarea 设置了如下属性 获取到的高度是266 实际不止 目测少算了 【完成按钮】那一栏的高度 大约52px，加上这个高度输入框就能显示了，希望尽快处理下，现在只能判断是华为手机大概加上这个高度，代码片段就是下面这段，左边的没加52px,右边的加了52px

onReady: function () {
    wx.onKeyboardHeightChange(function () {
      let height = res.height
      let sys = wx.getSystemInfoSync()
      if (height > 0 && sys.brand === 'HUAWEI') {
        height += 52
      }
      this.setData({
        keyboardheight: height
      })
    })
  }

<view wx:if="{{focus}}" class="kl-footer-fixed vux-1px-t flex flex-end" style="padding-bottom: {{keyboardheight}}px;padding-bottom: calc({{keyboardheight}}px + {{focus? '0px':'env(safe-area-inset-bottom)'}});">
  <view class="kl-comment-input-box flex-one">
    <textarea wx:if="{{focus}}" placeholder="{{placeholder}}" maxlength="2000" fixed value="{{content}}" bindconfirm="submitComment" adjust-position="{{false}}" bindinput="contentChange" 
    bindblur="commentBlur" focus="{{focus}}" hold-keyboard auto-height class="kl-comment-input"/>
    <view class="kl-img-wrap" wx:if="{{file}}">
      <image-fade width="160rpx" height="160rpx" color="#eee" src="{{file}}"/>
      <view class="iconfont iconclose_window_btn" catch:tap="delImage"></view>
    </view>
  </view>
  <view bind:tap="chooseImg" class="iconfont icontupian kl-mrb24" style="font-size:40rpx;"></view>
</view>