uni-app/微信小程序：scroll-view纵向滚动高度自适应flex布局填充剩余高度

// 获取总高度
let screenHeight = uni.getSystemInfoSync().windowHeight;
// 布局位置信息
const query = uni.createSelectorQuery().in(this)
    query
      .select('#scroll-view')
      .boundingClientRect((data) => {
        // @ts-ignore
        console.log('得到布局位置信息' + JSON.stringify(data))
        // @ts-ignore
        this.height = `height:${data.height}px;`
      })
      .exec()

<scroll-view   
        v-if="height"
        :style="height"
        bindscrolltolower="scrolltolower" 
        scroll-y
>
</scroll-view>

<view class="main">
    <view class="title"></view>
    <scroll-view
          scroll-top="scrollTop"
          scroll-y="true"
          class="scroll-view"
          @scrolltolower="handleScrollToLower"
        >
        </scroll-view>
</view>

.main {
    height: 100%;
    display:flex;
    flex-direction: column; // 竖向排列
}
.title{
    height: 100rpx;
}
.scroll-view {
    flex: 1;    // 撑满剩余高度
    height: 0;  // 关键属性，否则scroll-view不生效
}