zhibo/pages/list/index.vue

<template>
	<view class="content">
		<mescroll-body bottom="0" ref="mescrollRef" @init="mescrollInit" @down="downCallback" @up="upCallback"
			:down="downOption" :up="upOption">
			<view class="list">
				<view class="list-item" @click="goLive(item)" v-for="(item,index) in list" :key="index">
					<image v-if="item.liveImgUrl" :src="item.liveImgUrl"></image>
					<!-- 直播流 -->
					<!-- <video v-if=" item.liveType == 1 && item.flvHlsUrl" :id="'myVideo_' + item.liveId"
						:src="item.flvHlsUrl" :autoplay="false" muted  :controls="false" object-fit="contain"
						:custom-cache="false" :enable-progress-gesture="false" :show-center-play-btn="false"
						:http-cache="false" :muted="true" @error="onVideoError(item, $event)"></video> -->

					<!-- 录播视频 -->
				<!-- 	<video v-if=" item.liveType == 2 && item.videoUrl " :id="'myVideo_' + item.liveId"
						:src="item.videoUrl" :autoplay="false" muted  :controls="false" object-fit="contain"
						:custom-cache="false" :enable-progress-gesture="false" :show-center-play-btn="false"
						:http-cache="false" :loop="true" :muted="true" @error="onVideoError(item, $event)"
						@loadedmetadata="onVideoLoaded(item)"></video> -->

					<view class="info">
						<text>{{item.liveName}}</text>
					</view>
				</view>
			</view>
		</mescroll-body>
	</view>
</template>

<script>
	import Hls from 'hls.js';
	import {
		liveList
	} from '@/api/list'
	import MescrollMixin from "@/uni_modules/mescroll-uni/components/mescroll-uni/mescroll-mixins.js";

	export default {
		mixins: [MescrollMixin],
		data() {
			return {

				list: [],
				downOption: {
					offset: 80,
					use: true,
					auto: false
				},
				upOption: {
					use: true,
					auto: true,
					page: {
						num: 0,
						size: 10
					}
				},
				mescroll: null,
				observer: null // 存储IntersectionObserver实例
			}
		},
		onLoad() {
			if (!uni.getStorageSync("AppToken")) {
				uni.navigateTo({
					url: '/pages/auth/login'
				});
			}
		},
		onUnload() {
			// 清理所有观察器和视频资源
			this.cleanupAllVideos();
		},
		methods: {
			// 视频加载错误处理
			onVideoError(item, e) {
				// console.error('视频加载错误:', e.detail, item);
				this.$set(item, '_error', true);
				this.pauseVideo(item);
			},

			// 视频元数据加载完成
			onVideoLoaded(item) {
				console.log('视频元数据加载完成:', item.liveId);
				this.$set(item, '_error', false);
			},

			// 初始化所有视频观察器
			initAllVideoObservers() {
				// 先清理旧的
				this.cleanupAllVideos();

				// 使用setTimeout确保DOM已渲染
				setTimeout(() => {
					this.list.forEach(item => {
						if (item.liveId) {
							this.initVideoObserver(item);
						}
					});
				}, 300);
			},

			// 初始化单个视频的观察器
			initVideoObserver(item) {
				const videoId = `myVideo_${item.liveId}`;

				// 创建交叉观察器（监听视频项是否进入视口）
				const observer = uni.createIntersectionObserver(this);

				observer.relativeToViewport({
					top: 100, // 顶部提前100px触发（优化体验，避免刚进入就播放）
					bottom: 100 // 底部延迟100px触发（避免快速滑动时频繁切换）
				}).observe(`#${videoId}`, (res) => {
					const isInView = res.intersectionRatio > 0; // 是否进入视口（交叉比例>0）

					// 2. 联动播放/暂停：进入视口播放，离开暂停
					if (isInView) {
						this.playVideo(item); // 进入视口：播放视频
					} else {
						this.pauseVideo(item); // 离开视口：暂停视频
					}
				});

				// 存储观察器引用，便于后续清理
				this.$set(item, '_observer', observer);
			},

			// 播放视频
			playVideo(item) {
				
				if ( item._isPlaying || item._error) return;

				const videoId = `myVideo_${item.liveId}`;
				const isLive = item.liveType == 1;

				// 获取video上下文
				uni.createSelectorQuery().in(this)
					.select(`#${videoId}`)
					.fields({
						context: true
					})
					.exec((res) => {
						if (res && res[0] && res[0].context) {
							const videoContext = res[0].context;

							try {
								if (isLive) {
									// 直播流处理
									//	#ifdef H5
									if (item.flvHlsUrl && item.flvHlsUrl.includes('.m3u8') && Hls.isSupported()) {
										this.setupHlsPlayback(item, videoContext);
									} else {
										videoContext.play();
									}
									//#else
									videoContext.play();
									//#endif
								} else {
									// 录播视频处理 - 添加重试机制
									const playAttempt = () => {
										videoContext.play().then(() => {
											console.log('录播视频播放成功:', item.liveId);
											this.$set(item, '_isPlaying', true);
											this.$set(item, '_videoContext', videoContext);
										}).catch(err => {
											console.error('录播视频播放失败:', err);
											this.$set(item, '_error', true);
										});
									};

									// 如果视频已加载，直接播放；否则监听加载事件
									if (videoContext.duration > 0) {
										playAttempt();
									} else {
										videoContext.onloadedmetadata = playAttempt;
									}
								}
								// 播放成功后标记 _isPlaying=true
								this.$set(item, '_isPlaying', true);
								this.$set(item, '_videoContext', videoContext);
							} catch (err) {
								console.error(`播放失败 ${videoId}:`, err);
								this.$set(item, '_error', true);
							}
						}
					});
			},



			// 暂停视频
			pauseVideo(item) {
				if (!item._isPlaying) return;

				if (item._videoContext) {
					item._videoContext.pause();
				}

				// 清理HLS实例（如果是直播且使用了HLS）
				//	#ifdef H5
				if (item.liveType == 1 && item._hlsInstance) {
					item._hlsInstance.destroy();
					this.$set(item, '_hlsInstance', null);
				}
				//#endif
				this.$set(item, '_isPlaying', false);
			},

			// H5平台的HLS播放设置
			// #ifdef H5
			setupHlsPlayback(item, videoElement) {
				if (item._hlsInstance) {
					item._hlsInstance.destroy();
				}

				const hls = new Hls({
					enableWorker: true,
					lowLatencyMode: true,
					debug: false
				});

				hls.attachMedia(videoElement);
				hls.loadSource(item.flvHlsUrl);

				hls.on(Hls.Events.MANIFEST_PARSED, () => {
					videoElement.play();
				});

				this.$set(item, '_hlsInstance', hls);
			},
			// #endif

			// 清理所有视频资源
			cleanupAllVideos() {
				this.list.forEach(item => {
					this.pauseVideo(item);
					
					// 销毁观察器
					if (item._observer) {
						item._observer.disconnect();
						this.$set(item, '_observer', null);
					}
				});
			},

			// mescroll初始化
			mescrollInit(mescroll) {
				this.mescroll = mescroll;
			},

			// 下拉刷新回调
			downCallback(mescroll) {
				this.cleanupAllVideos();
				this.list = [];
				mescroll.resetUpScroll();
			},

			// 上拉加载回调
			upCallback(mescroll) {
				const pageNum = mescroll.num;
				const pageSize = mescroll.size;

				let data = {
					pageSize: pageSize,
					pageNum: pageNum,
				}

				liveList(data).then(res => {
					if (res.code == 200) {
						let curPageData = res.rows || [];
						// console.log("curPageData在这里>>>>", res)
						let totalSize = res.total || 0;

						// 预处理数据，添加状态字段
						curPageData = curPageData.map(item => {
							return {
								...item,
								_error: false,
								_isPlaying: false,
							};
						});

						if (pageNum === 1) {
							this.list = [];
						}

						this.list = this.list.concat(curPageData);
						// DOM更新后初始化视频观察器
						this.$nextTick(() => {
							this.initAllVideoObservers();
						});

						mescroll.endBySize(curPageData.length, totalSize);
					} else {
						mescroll.endErr();
						uni.showToast({
							title: res.msg,
							icon: 'none'
						});
					}
				}).catch(err => {
					mescroll.endErr();
				});
			},

			goLive(item) {
				uni.navigateTo({
					url: `/pages/home/living?liveId=${item.liveId}&immediate=true`
				});
			}
		}
	}
</script>

<style lang="scss" scoped>
	.content {
		background-color: #111;
		min-height: 100vh;
		padding: 24rpx;

		.list {
			display: flex;
			justify-content: space-between;
			flex-wrap: wrap;

			.list-item {
				border-radius: 16rpx;
				width: 340rpx;
				height: 600rpx;
				background-color: #0d0d0d;
				margin-bottom: 24rpx;
				overflow: hidden;
				position: relative;

				image {
					width: 100%;
					height: 100%;
				}

				video {
					width: 100%;
					height: 100%;
					object-fit: cover;
				}

				.info {
					position: absolute;
					left: 20rpx;
					bottom: 14rpx;
					right: 20rpx;
					color: #ffffff;
					display: flex;
					align-items: center;

					.live-badge {
						background-color: #e74c3c;
						padding: 4rpx 12rpx;
						border-radius: 8rpx;
						font-size: 20rpx;
						margin-right: 12rpx;
					}

					.record-badge {
						background-color: #3498db;
						padding: 4rpx 12rpx;
						border-radius: 8rpx;
						font-size: 20rpx;
						margin-right: 12rpx;
					}
				}

				.error-tip {
					position: absolute;
					top: 50%;
					left: 50%;
					transform: translate(-50%, -50%);
					color: #fff;
					background-color: rgba(0, 0, 0, 0.7);
					padding: 16rpx 24rpx;
					border-radius: 8rpx;
					font-size: 24rpx;
				}
			}

			// 使列表项均匀分布
			.list-item:nth-child(2n) {
				margin-right: 0;
			}
		}
	}
</style>