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uniapp的自定义组件component如何实现滑到底部自动加载更多和下拉刷新?

uniapp的自定义组件component如何实现滑到底部自动加载更多和下拉刷新?


网友回复

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组件最外层增加一个scroll-view,增加scrolltoupper及scrolltolower事件监听,下拉刷新就需要增加 refresher-enabled="true"

<scroll-view :scroll-top="scrollTop" scroll-y="true" class="scroll-Y" @scrolltoupper="upper"
					@scrolltolower="lower" @scroll="scroll" refresher-enabled="true" :refresher-triggered="triggered"
			:refresher-threshold="100" refresher-background="lightgreen" @refresherpulling="onPulling"
			@refresherrefresh="onRefresh" @refresherrestore="onRestore" @refresherabort="onAbort">
					<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>

完整代码

<template>
	<view>

		
		<scroll-view style="height: 300px;" scroll-y="true" refresher-enabled="true" :refresher-triggered="triggered"
			:refresher-threshold="100" refresher-background="lightgreen" @refresherpulling="onPulling"
			@refresherrefresh="onRefresh" @refresherrestore="onRestore" @refresherabort="onAbort"></scroll-view>

		<!-- 本示例未包含完整css,获取外链css请参考上文,在hello uni-app项目中查看 -->

		<view class="uni-padding-wrap uni-common-mt">
			<view class="uni-title uni-common-mt">
				Vertical Scroll
				<text>\n纵向滚动</text>
			</view>
			<view>
				<scroll-view :scroll-top="scrollTop" scroll-y="true" class="scroll-Y" @scrolltoupper="upper"
					@scrolltolower="lower" @scroll="scroll">
					<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>
			</view>
			<view @tap="goTop" class="uni-link uni-center uni-common-mt">
				点击这里返回顶部
			</view>

			<view class="uni-title uni-common-mt">
				Horizontal Scroll
				<text>\n横向滚动</text>
			</view>
			<view>
				<scroll-view class="scroll-view_H" scroll-x="true" @scroll="scroll" scroll-left="120">
					<view id="demo1" class="scroll-view-item_H uni-bg-red">A</view>
					<view id="demo2" class="scroll-view-item_H uni-bg-green">B</view>
					<view id="demo3" class="scroll-view-item_H uni-bg-blue">C</view>
				</scroll-view>
			</view>
			<view class="uni-common-pb"></view>
		</view>


	</view>
</template>

<script>
	export default {
		data() {
			return {
				
				triggered: false,
				scrollTop: 0,
				old: {
					scrollTop: 0
				}
			}
		},
		onLoad() {
			this._freshing = false;
			setTimeout(() => {
				this.triggered = true;
			}, 1000)
		},
		methods: {
			onPulling(e) {
				console.log("onpulling", e);
			},
			onRefresh() {
				if (this._freshing) return;
				this._freshing = true;
				setTimeout(() => {
					this.triggered = false;
					this._freshing = false;
				}, 3000)
			},
			onRestore() {
				this.triggered = 'restore'; // 需要重置
				console.log("onRestore");
			},
			onAbort() {
				console.log("onAbort");
			},
			upper: function(e) {
				console.log(e)
			},
			lower: function(e) {
				console.log(e)
			},
			scroll: function(e) {
				console.log(e)
				this.old.scrollTop = e.detail.scrollTop
			},
			goTop: function(e) {
				// 解决view层不同步的问题
				this.scrollTop = this.old.scrollTop
				this.$nextTick(function() {
					this.scrollTop = 0
				});
				uni.showToast({
					icon: "none",
					title: "纵向滚动 scrollTop 值已被修改为 0"
				})
			}
		}
	}
</script>

<style>
	.scroll-Y {
		height: 300rpx;
	}

	.scroll-view_H {
		white-space: nowrap;
		width: 100%;
	}

	.scroll-view-item {
		height: 300rpx;
		line-height: 300rpx;
		text-align: center;
		font-size: 36rpx;
	}

	.scroll-view-item_H {
		display: inline-block;
		width: 100%;
		height: 300rpx;
		line-height: 300rpx;
		text-align: center;
		font-size: 36rpx;
	}
</style>

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