edu-mini/components/area-info/area-info.wxml

<van-action-sheet show="{{ show }}">
    <van-picker columns="{{ columns }}" bind:change="onChange" value-key="name" class="picker"
                show-toolbar
                title="选择行政区域"
                bind:cancel="onCancel"
                loading="{{loading}}"
                bind:confirm="onConfirm"/>
</van-action-sheet>