list-news.uvue

<template>
	<view style="width: 100%;height: 100%;">
		<view class="banner" @click="bannerClick(banner)">
			<image class="banner-img" :src="banner.cover"></image>
			<text class="banner-title">{{ banner.title }}</text>
		</view>
		<list-view class="uni-list-content" refresher-enabled=true @refresherrefresh="onRefresherrefresh"
			:refresher-triggered="refresherTriggered" scroll-y = true>
			<list-item v-for="(value, index) in listData" :key="index">
				<view class="uni-list-cell" hover-class="uni-list-cell-hover" @click="goDetail(value)">
					<view class="uni-media-list">
						<image class="uni-media-list-logo" :src="value.cover"></image>
						<view class="uni-media-list-body">
							<text class="uni-media-list-text-top">{{ value.title }}</text>
							<view class="uni-media-list-text-bottom">
								<text class="uni-media-list-text">{{ value.author_name }}</text>
								<text class="uni-media-list-text">{{ value.published_at }}</text>
							</view>
						</view>
					</view>
				</view>
			</list-item>
		</list-view>
	</view>
</template>

<script>
	type Banner = {
		cover: string | null,
		title: string | null,
		post_id: string | null
	}
	type Item = {
		author_name: string,
		cover: string,
		id: number,
		post_id: string,
		published_at: string,
		title: string
	}

	export default {
		data() {
			return {
				refresherTriggered: false,
				banner: {} as Banner,
				listData: [] as Item[],
				last_id: '',
				pageVisible: false
			};
		},
		onLoad() {
			this.pageVisible = true; //设这个变量是为了避免联网结束后页面已经关闭，此时还继续执行回调逻辑的问题。不是必须的
			this.getBanner();
			this.getList();
		},
		onUnload() {
			this.pageVisible = false;
		},
		methods: {
			getBanner() {
				let data = {
					column: 'id,post_id,title,author_name,cover,published_at' //需要的字段名
				};
				uni.request({
					url: 'https://unidemo.dcloud.net.cn/api/banner/36kr',
					data: data,
					success: data => {
						if(this.pageVisible){
							this.refresherTriggered = false
							if (data.statusCode == 200) {
								let result = data.data as UTSJSONObject;
								this.banner = {
									cover: result["cover"] as string,
									title: result["title"] as string,
									post_id: result["post_id"] as string
								} as Banner;
							}
						}
					},
					fail: (e) => {
						console.log('fail', e);
					}
				});
			},
			getList() {
				let url = "https://unidemo.dcloud.net.cn/api/news?column=id,post_id,title,author_name,cover,published_at";
				/* if (this.last_id != "") {
					const minId = parseInt((this.last_id))
					const time = new Date().getTime() + '';
					const pageSize = 10;
					url = url + "&minId=" + minId + "&time=" + time + "&pageSize=" + pageSize;
				} */

				uni.request<Item[]>({
					url: url,
					method:"GET",
					success: (res) => {
						if(this.pageVisible){
							if (res.statusCode == 200) {
                console.log(res);
								const result = res.data
								if(result != null){
									this.listData = result //因本接口没有更多分页数据，所以重新赋值。正常有分页的列表应该如下面push方式增加数组项
									// this.listData.push(...result)
									// this.last_id = this.listData[0].id + "";
								}
								this.refresherTriggered = false;
							}
						}
					},
					fail: (res) => {
						if(this.pageVisible){
							console.log('fail', res);
							this.refresherTriggered = false
						}
					}
				});
			},
			goDetail(e: Item) {
				const detail = e;
				const post_id = detail.post_id;
				const cover = detail.cover;
				const title = detail.title;
				uni.navigateTo({
					url: '/pages/template/list-news/detail/detail?post_id=' + post_id + "&cover=" + cover + "&title=" + title
				});
			},
			bannerClick(e:Banner){
				const detail = e;
				const post_id = detail.post_id;
				const cover = detail.cover;
				const title = detail.title;
				uni.navigateTo({
					url: '/pages/template/list-news/detail/detail?post_id=' + post_id + "&cover=" + cover + "&title=" + title
				});
			},
			onRefresherrefresh() {
				if(this.pageVisible){
					this.refresherTriggered = true
					this.getBanner();
					this.getList();
				}
			}
		}
	};
</script>

<style>
	.banner {
		height: 360rpx;
		overflow: hidden;
		position: relative;
		background-color: #ccc;
	}

	.banner-img {
		width: 100%;
	}

	.banner-title {
		max-height: 84rpx;
		overflow: hidden;
		position: absolute;
		left: 30rpx;
		bottom: 30rpx;
		width: 90%;
		font-size: 32rpx;
		font-weight: 400;
		line-height: 42rpx;
		color: white;
	}

	.uni-media-list {
		padding: 22rpx 30rpx;
		box-sizing: border-box;
		display: flex;
		width: 100%;
		flex-direction: row;
	}

	.uni-media-list-logo {
		width: 180rpx;
		height: 140rpx;
	}

	.uni-media-list-body {
		flex: 1;
		padding-left: 15rpx;
		justify-content: space-around;
	}

	.uni-list-content{
		background-color: #FFFFFF;
		position: relative;
		display: flex;
		flex-direction: column;
		border-bottom: 1px solid #c8c7cc;
		flex: 1;
	}

	.uni-media-list-text-top {
		/* height: 74rpx; */
		font-size: 28rpx;
		lines:2;
		overflow: hidden;
	}

	.uni-media-list-text-bottom {
		display: flex;
		flex-direction: row;
		justify-content: space-between;
	}

	.uni-media-list-text {
		color: #9D9D9F;
		font-size: 25rpx;
	}
</style>