动态设置refresher-triggered的值，当触发下拉刷新时，refresher-triggered = true；当下拉刷新执行完之后refresher-triggered = false。

<scroll-view 
    :scroll-top="scrollTop" 
    scroll-y="true"
    :refresher-triggered="triggered"
    @refresherrefresh="onRefresh"
>
	<view id="demo1" class="scroll-view-item uni-bg-red">A</view>
	<view id="demo2" class="scroll-view-item uni-bg-green">B</view>
	<view id="demo3" class="scroll-view-item uni-bg-blue">C</view>
</scroll-view>


<script>
    export default {
        data() {
            return {
                triggered: false
            }
        },
        methods: {
            onRefresh(){
                this.triggered = true;
                setTimeout(() => {
                    this.triggered = false;
                }, 3000)
            }
        }
    }
</script>

详情请阅览scroll-view自定义下拉刷新