437 lines
14 KiB
Plaintext
437 lines
14 KiB
Plaintext
<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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// 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://web-assets.dcloud.net.cn/unidoc/zh/shuijiao-small.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://web-assets.dcloud.net.cn/unidoc/zh/muwu-samll.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://web-assets.dcloud.net.cn/unidoc/zh/cbd%20-small.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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/* #ifndef APP-PLUS */
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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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