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436 lines
14 KiB
436 lines
14 KiB
<template> |
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<view class="tabs"> |
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<scroll-view id="tab-bar" class="scroll-h" :scroll-x="true" :show-scrollbar="false" :scroll-into-view="scrollInto"> |
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<view v-for="(tab,index) in tabBars" :key="tab.id" class="uni-tab-item" :id="tab.id" :data-current="index" @click="ontabtap"> |
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<text class="uni-tab-item-title" :class="tabIndex==index ? 'uni-tab-item-title-active' : ''">{{tab.name}}</text> |
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</view> |
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</scroll-view> |
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<view class="line-h"></view> |
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<swiper :current="tabIndex" class="swiper-box" style="flex: 1;" :duration="300" @change="ontabchange"> |
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<swiper-item class="swiper-item" v-for="(tab,index1) in newsList" :key="index1"> |
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<!-- #ifdef APP-NVUE --> |
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<list class="scroll-v list" enableBackToTop="true" scroll-y loadmoreoffset="15" @loadmore="loadMore(index1)"> |
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<refresh class="refresh" @refresh="onrefresh(index1)" @pullingdown="onpullingdown" :display="tab.refreshing ? 'show' : 'hide'"> |
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<div class="refresh-view"> |
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<image class="refresh-icon" :src="refreshIcon" :style="{width: (tab.refreshing || pulling) ? 0: '30px'}" :class="{'refresh-icon-active': tab.refreshFlag}"></image> |
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<loading-indicator class="loading-icon" animating="true" v-if="tab.refreshing"></loading-indicator> |
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<text class="loading-text">{{tab.refreshText}}</text> |
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</div> |
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</refresh> |
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<cell v-for="(newsitem,index2) in tab.data" :key="newsitem.id"> |
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<media-item :options="newsitem" @close="close(index1,index2)" @click="goDetail(newsitem)"></media-item> |
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</cell> |
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<cell class="loading-more" v-if="tab.isLoading || tab.data.length > 4"> |
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<text class="loading-more-text">{{tab.loadingText}}</text> |
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</cell> |
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</list> |
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<!-- #endif --> |
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<!-- #ifndef APP-NVUE --> |
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<scroll-view class="scroll-v list" enableBackToTop="true" scroll-y @scrolltolower="loadMore(index1)"> |
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<view v-for="(newsitem,index2) in tab.data" :key="newsitem.id"> |
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<media-item :options="newsitem" @close="close(index1,index2)" @click="goDetail(newsitem)"></media-item> |
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</view> |
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<view class="loading-more" v-if="tab.isLoading || tab.data.length > 4"> |
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<text class="loading-more-text">{{tab.loadingText}}</text> |
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</view> |
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</scroll-view> |
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<!-- #endif --> |
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</swiper-item> |
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</swiper> |
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</view> |
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</template> |
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<script> |
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import mediaItem from './news-item.nvue'; |
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|
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// 缓存每页最多 |
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const MAX_CACHE_DATA = 100; |
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// 缓存页签数量 |
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const MAX_CACHE_PAGE = 3; |
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const newsData = { |
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data0: { |
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"datetime": "40分钟前", |
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"article_type": 0, |
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"title": "uni-app行业峰会频频亮相，开发者反响热烈!", |
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"source": "DCloud", |
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"comment_count": 639 |
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}, |
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data1: { |
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"datetime": "一天前", |
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"article_type": 1, |
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"title": "DCloud完成B2轮融资，uni-app震撼发布!", |
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"image_url": "https://vkceyugu.cdn.bspapp.com/VKCEYUGU-dc-site/b7c7f970-517d-11eb-97b7-0dc4655d6e68.jpg", |
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"source": "DCloud", |
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"comment_count": 11395 |
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}, |
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data2: { |
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"datetime": "一天前", |
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"article_type": 2, |
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"title": "中国技术界小奇迹：HBuilder开发者突破200万", |
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"image_url": "https://vkceyugu.cdn.bspapp.com/VKCEYUGU-dc-site/b4cd3000-517d-11eb-a16f-5b3e54966275.jpg", |
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"source": "DCloud", |
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"comment_count": 11395 |
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}, |
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data3: { |
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"article_type": 3, |
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"image_list": [{ |
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"url": "https://vkceyugu.cdn.bspapp.com/VKCEYUGU-dc-site/b2e201d0-517d-11eb-8a36-ebb87efcf8c0.jpg", |
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"width": 563, |
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"height": 316 |
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}, { |
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"url": "https://vkceyugu.cdn.bspapp.com/VKCEYUGU-dc-site/b4cd3000-517d-11eb-a16f-5b3e54966275.jpg", |
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"width": 641, |
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"height": 360 |
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}, { |
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"url": "https://vkceyugu.cdn.bspapp.com/VKCEYUGU-dc-site/b7c7f970-517d-11eb-97b7-0dc4655d6e68.jpg", |
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"width": 640, |
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"height": 360 |
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}], |
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"datetime": "5分钟前", |
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"title": "uni-app 支持使用 npm 安装第三方包，生态更趋丰富", |
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"source": "DCloud", |
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"comment_count": 11 |
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}, |
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data4: { |
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"datetime": "2小时前", |
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"article_type": 4, |
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"title": "uni-app 支持原生小程序自定义组件，更开放、更自由", |
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"image_url": "https://vkceyugu.cdn.bspapp.com/VKCEYUGU-dc-site/b2e201d0-517d-11eb-8a36-ebb87efcf8c0.jpg", |
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"source": "DCloud", |
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"comment_count": 69 |
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} |
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}; |
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export default { |
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components: { |
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mediaItem |
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}, |
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data() { |
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return { |
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newsList: [], |
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cacheTab: [], |
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tabIndex: 0, |
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tabBars: [{ |
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name: '关注', |
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id: 'guanzhu' |
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}, { |
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name: '推荐', |
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id: 'tuijian' |
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}, { |
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name: '体育', |
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id: 'tiyu' |
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}, { |
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name: '热点', |
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id: 'redian' |
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}, { |
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name: '财经', |
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id: 'caijing' |
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}, { |
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name: '娱乐', |
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id: 'yule' |
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}, { |
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name: '军事', |
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id: 'junshi' |
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}, { |
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name: '历史', |
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id: 'lishi' |
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}, { |
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name: '本地', |
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id: 'bendi' |
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}], |
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scrollInto: "", |
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showTips: false, |
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navigateFlag: false, |
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pulling: false, |
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refreshIcon: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAMAAABg3Am1AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAB5QTFRFcHBw3Nzct7e39vb2ycnJioqK7e3tpqam29vb////D8oK7wAAAAp0Uk5T////////////ALLMLM8AAABxSURBVHja7JVBDoAgDASrjqj//7CJBi90iyYeOHTPMwmFZrHjYyyFYYUy1bwUZqtJIYVxhf1a6u0R7iUvWsCcrEtwJHp8MwMdvh2amHduiZD3rpWId9+BgPd7Cc2LIkPyqvlQvKxKBJ//Qwq/CacAAwDUv0a0YuKhzgAAAABJRU5ErkJggg==" |
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} |
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}, |
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onLoad() { |
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setTimeout(()=>{ |
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this.tabBars.forEach((tabBar) => { |
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this.newsList.push({ |
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data: [], |
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isLoading: false, |
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refreshText: "", |
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loadingText: '加载更多...' |
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}); |
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}); |
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this.getList(0); |
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},350) |
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}, |
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methods: { |
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getList(index) { |
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let activeTab = this.newsList[index]; |
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let list = []; |
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for (let i = 1; i <= 10; i++) { |
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let item = Object.assign({}, newsData['data' + Math.floor(Math.random() * 5)]); |
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item.id = this.newGuid(); |
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list.push(item); |
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} |
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activeTab.data = activeTab.data.concat(list); |
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}, |
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goDetail(e) { |
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if (this.navigateFlag) { |
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return; |
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} |
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this.navigateFlag = true; |
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uni.navigateTo({ |
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url: './detail/detail?title=' + e.title |
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}); |
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setTimeout(() => { |
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this.navigateFlag = false; |
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}, 200) |
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}, |
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close(index1, index2) { |
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uni.showModal({ |
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content: '是否删除本条信息？', |
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success: (res) => { |
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if (res.confirm) { |
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this.newsList[index1].data.splice(index2, 1); |
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} |
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} |
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}) |
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}, |
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loadMore(e) { |
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setTimeout(() => { |
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this.getList(this.tabIndex); |
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}, 500) |
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}, |
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ontabtap(e) { |
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let index = e.target.dataset.current || e.currentTarget.dataset.current; |
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this.switchTab(index); |
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}, |
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ontabchange(e) { |
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let index = e.target.current || e.detail.current; |
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this.switchTab(index); |
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}, |
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switchTab(index) { |
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if (this.newsList[index].data.length === 0) { |
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this.getList(index); |
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} |
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if (this.tabIndex === index) { |
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return; |
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} |
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// 缓存 tabId |
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if (this.newsList[this.tabIndex].data.length > MAX_CACHE_DATA) { |
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let isExist = this.cacheTab.indexOf(this.tabIndex); |
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if (isExist < 0) { |
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this.cacheTab.push(this.tabIndex); |
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//console.log("cache index:: " + this.tabIndex); |
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} |
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} |
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this.tabIndex = index; |
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this.scrollInto = this.tabBars[index].id; |
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// 释放 tabId |
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if (this.cacheTab.length > MAX_CACHE_PAGE) { |
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let cacheIndex = this.cacheTab[0]; |
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this.clearTabData(cacheIndex); |
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this.cacheTab.splice(0, 1); |
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//console.log("remove cache index:: " + cacheIndex); |
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} |
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}, |
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clearTabData(e) { |
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this.newsList[e].data.length = 0; |
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this.newsList[e].loadingText = "加载更多..."; |
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}, |
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refreshData() {}, |
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onrefresh(e) { |
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var tab = this.newsList[this.tabIndex]; |
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if (!tab.refreshFlag) { |
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return; |
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} |
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tab.refreshing = true; |
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tab.refreshText = "正在刷新..."; |
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setTimeout(() => { |
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this.refreshData(); |
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this.pulling = true; |
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tab.refreshing = false; |
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tab.refreshFlag = false; |
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tab.refreshText = "已刷新"; |
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setTimeout(() => { // TODO fix ios和Android 动画时间相反问题 |
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this.pulling = false; |
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}, 500); |
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}, 2000); |
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}, |
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onpullingdown(e) { |
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var tab = this.newsList[this.tabIndex]; |
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if (tab.refreshing || this.pulling) { |
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return; |
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} |
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if (Math.abs(e.pullingDistance) > Math.abs(e.viewHeight)) { |
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tab.refreshFlag = true; |
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tab.refreshText = "释放立即刷新"; |
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} else { |
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tab.refreshFlag = false; |
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tab.refreshText = "下拉可以刷新"; |
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} |
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}, |
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newGuid() { |
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let s4 = function() { |
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return (65536 * (1 + Math.random()) | 0).toString(16).substring(1); |
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} |
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return (s4() + s4() + "-" + s4() + "-4" + s4().substr(0, 3) + "-" + s4() + "-" + s4() + s4() + s4()).toUpperCase(); |
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} |
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} |
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} |
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</script> |
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<style> |
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/* #ifndef APP-PLUS */ |
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page { |
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width: 100%; |
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min-height: 100%; |
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display: flex; |
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} |
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/* #endif */ |
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.tabs { |
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flex: 1; |
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flex-direction: column; |
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overflow: hidden; |
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background-color: #ffffff; |
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/* #ifdef MP-ALIPAY || MP-BAIDU */ |
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height: 100vh; |
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/* #endif */ |
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} |
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.scroll-h { |
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width: 750rpx; |
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/* #ifdef H5 */ |
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width:100%; |
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/* #endif */ |
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height: 80rpx; |
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flex-direction: row; |
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/* #ifndef APP-PLUS */ |
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white-space: nowrap; |
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/* #endif */ |
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/* flex-wrap: nowrap; */ |
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/* border-color: #cccccc; |
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border-bottom-style: solid; |
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border-bottom-width: 1px; */ |
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} |
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.line-h { |
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height: 1rpx; |
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background-color: #cccccc; |
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} |
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.uni-tab-item { |
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/* #ifndef APP-PLUS */ |
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display: inline-block; |
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/* #endif */ |
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flex-wrap: nowrap; |
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padding-left: 34rpx; |
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padding-right: 34rpx; |
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} |
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.uni-tab-item-title { |
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color: #555; |
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font-size: 30rpx; |
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height: 80rpx; |
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line-height: 80rpx; |
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flex-wrap: nowrap; |
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/* #ifndef APP-PLUS */ |
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white-space: nowrap; |
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/* #endif */ |
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} |
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.uni-tab-item-title-active { |
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color: #007AFF; |
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} |
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.swiper-box { |
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flex: 1; |
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} |
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.swiper-item { |
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flex: 1; |
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flex-direction: row; |
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} |
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.scroll-v { |
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flex: 1; |
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/* #ifndef MP-ALIPAY */ |
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flex-direction: column; |
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/* #endif */ |
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width: 750rpx; |
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width:100%; |
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} |
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.update-tips { |
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position: absolute; |
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left: 0; |
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top: 41px; |
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right: 0; |
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padding-top: 5px; |
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padding-bottom: 5px; |
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background-color: #FDDD9B; |
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align-items: center; |
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justify-content: center; |
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text-align: center; |
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} |
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.update-tips-text { |
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font-size: 14px; |
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color: #ffffff; |
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} |
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.refresh { |
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width: 750rpx; |
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width:100%; |
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height: 64px; |
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justify-content: center; |
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} |
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.refresh-view { |
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flex-direction: row; |
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flex-wrap: nowrap; |
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align-items: center; |
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justify-content: center; |
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} |
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.refresh-icon { |
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width: 30px; |
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height: 30px; |
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transition-duration: .5s; |
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transition-property: transform; |
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transform: rotate(0deg); |
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transform-origin: 15px 15px; |
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} |
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.refresh-icon-active { |
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transform: rotate(180deg); |
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} |
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.loading-icon { |
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width: 20px; |
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height: 20px; |
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margin-right: 5px; |
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color: #999999; |
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} |
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.loading-text { |
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margin-left: 2px; |
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font-size: 16px; |
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color: #999999; |
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} |
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.loading-more { |
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align-items: center; |
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justify-content: center; |
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padding-top: 10px; |
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padding-bottom: 10px; |
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text-align: center; |
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} |
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.loading-more-text { |
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font-size: 28rpx; |
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color: #999; |
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} |
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</style>
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