场景说明
在app中用nvue实现视频播放页面，页面分为顶部视频区、课程标题区、tab选项卡区
需求1：用自定义黑色view占位标题栏区域，自定义状态栏占位区和视频区固定在顶部；
需求2：课程标题区随着页面上下滑动而滚动
需求3：tab选项卡区滑动到视频区底部时，自动吸顶
需求4：tab的每个子选项卡滚动高度各自独立
需求5：隐藏页面滚动条，仅显示tab选项卡区滚动条
index.nvue
<template>
<!-- :show-scrollbar="false" 不显示页面的滚动条 -->
<!-- :bounce="true" 开启iOS回弹效果 -->
<list id="page" class="page" :bounce="true" :show-scrollbar="false" isSwiperList="true">
<!-- 课程封面/视频播放器 -->
<!-- 固定吸在顶部 -->
<header>
<view id="head">
<!-- 黑色状态栏 -->
<view class="status-bar" :style="'height:' + statusHeight + 'px'">
</view>
<!-- 封面区/视频区 -->
<view class="cover-box">
<!--
课程封面/视频播放器区
tab选项卡总高度：{{pageHeight}}
tab选项卡吸顶高度：{{_headHeight}}(iOS端生效)
-->
<video title="uniapp nvue顶部双吸顶+左右滑动切换选项卡" src="https://api.dogecloud.com/player/get.mp4?vcode=5ac682e6f8231991&userId=17&ext=.mp4" objectFit="fill"
poster="https://i.loli.net/2019/06/06/5cf8c5d9c57b510947.png" style="width:750rpx;height: 200px;"></video>
</view>
</view>
</header>
<!-- 课程标题 -->
<!-- 不固定，随着竖向滚动条滑动 -->
<cell>
<view id="intro-box" class="intro-box">
课程标题区
</view>
</cell>
<!-- 可横向滑动切换选项卡 -->
<!-- 滑到封面区/视频区底部位置,自动吸顶 -->
<cell>
<view class="tabs" :style="'height:' + pageHeight + 'px'">
<scroll-view ref="tabbar1" id="tab-bar" class="tab-bar" :scroll="false" :scroll-x="false"
:show-scrollbar="false" :scroll-into-view="scrollInto">
<view style="flex-direction: column;">
<view style="flex-direction: row;">
<view class="uni-tab-item" id="tab0" ref="tabitem0" data-id="0" data-current="0"
@click="ontabtap">
<text class="uni-tab-item-title"
:class="tabIndex==0 ? 'uni-tab-item-title-active' : ''">详情</text>
</view>
<view class="uni-tab-item" id="tab1" ref="tabitem1" data-id="1" data-current="1"
@click="ontabtap">
<text class="uni-tab-item-title"
:class="tabIndex==1 ? 'uni-tab-item-title-active' : ''">目录</text>
</view>
<view class="uni-tab-item" id="tab2" ref="tabitem2" data-id="2" data-current="2"
@click="ontabtap">
<text class="uni-tab-item-title"
:class="tabIndex==2 ? 'uni-tab-item-title-active' : ''">评论</text>
</view>
<view class="uni-tab-item" id="tab3" ref="tabitem3" data-id="3" data-current="3"
@click="ontabtap">
<text class="uni-tab-item-title"
:class="tabIndex==3 ? 'uni-tab-item-title-active' : ''">资料</text>
</view>
</view>
<view class="scroll-view-indicator">
<view ref="underline" class="scroll-view-underline"
:class="isTap ? 'scroll-view-animation':''"
:style="{left: indicatorLineLeft + 'px', width: indicatorLineWidth + 'px'}"></view>
</view>
</view>
</scroll-view>
<view class="tab-bar-line"></view>
<swiper class="tab-view" ref="swiper1" id="tab-bar-view" :current="tabIndex" :duration="300"
@change="onswiperchange" @transition="onswiperscroll" @animationfinish="animationfinish"
@onAnimationEnd="animationfinish">
<swiper-item class="swiper-item">
<!-- 详情 -->
<view class="uni-swiper-page">
<list ref="list0" class="list" :offset-accuracy="5" :bounce="true" isSwiperList="true">
<cell @click="onclick">
课程简介内容
</cell>
<cell class="loading"></cell>
</list>
</view>
</swiper-item>
<swiper-item class="swiper-item">
<!-- 目录 -->
<view class="uni-swiper-page">
<list ref="list1" class="list" :offset-accuracy="5" :bounce="true" isSwiperList="true">
<cell @click="onclick">
<view class="list-item" v-for="(item,index) in [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49]">
<text>章节{{item}}</text>
</view>
</cell>
<cell class="loading"></cell>
</list>
</view>
</swiper-item>
<swiper-item class="swiper-item">
<!-- 评论 -->
<view class="uni-swiper-page">
<list ref="list2" class="list" :offset-accuracy="5" :bounce="true" isSwiperList="true">
<cell @click="onclick">
<view class="list-item" v-for="(item,index) in [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49]">
<text>评论{{item}}</text>
</view>
</cell>
<cell class="loading"></cell>
</list>
</view>
</swiper-item>
<swiper-item class="swiper-item">
<!-- 资料 -->
<view class="uni-swiper-page">
<list ref="list3" class="list" :offset-accuracy="5" :bounce="true" isSwiperList="true">
<cell @click="onclick">
<view class="list-item" v-for="(item,index) in [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49]">
<text>资料{{item}}</text>
</view>
</cell>
<cell class="loading"></cell>
</list>
</view>
</swiper-item>
</swiper>
</view>
</cell>
</list>
</template>
<script>
// #ifdef APP-PLUS
const dom = weex.requireModule('dom');
// #endif
// 缓存每页最多
const MAX_CACHE_DATA = 100;
// 缓存页签数量
const MAX_CACHE_PAGE = 3;
const TAB_PRELOAD_OFFSET = 1;
export default {
data() {
return {
tabIndex: 0,
cacheTab: [],
scrollInto: "",
indicatorLineLeft: 0,
indicatorLineWidth: 0,
isTap: false,
showTitleView: true,
statusHeight: 44,
pageHeight: 300,
refreshing: false,
refreshText: "",
refreshFlag: false
}
},
onLoad() {
},
onReady() {
let inf = uni.getSystemInfoSync();
this.statusHeight = inf.statusBarHeight; // 状态栏高度
this.pageHeight = inf.windowHeight - this.statusHeight - 200; // 页面高度
this._lastTabIndex = 0;
this.swiperWidth = 0;
this.tabbarWidth = 0;
this.tabListSize = {};
this._touchTabIndex = 0;
this._headHeight = 100;
this.selectorQuery();
// #ifdef APP-PLUS
plus.navigator.setStatusBarStyle("light"); //白色
// #endif
},
methods: {
setScrollRef(index, height) {
// Android不支持setSpecialEffects , 仅iOS机型生效
if (this.$refs['list' + index].setSpecialEffects) {
this.$refs['list' + index].setSpecialEffects({
id: "page",
headerHeight: height //设置iOS端Tabs距离顶部的吸顶距离
});
}
},
onclick(e) {
console.log("onclick");
},
loadData() {
// 首次激活时被调用
},
clear() {
// 释放数据时被调用，参考 swiper-list 缓存配置
},
ontap1(e) {
console.log("ontap1", e);
},
ontabtap(e) {
let index = e.target.dataset.current || e.currentTarget.dataset.current;
//let offsetIndex = this._touchTabIndex = Math.abs(index - this._lastTabIndex) > 1;
// #ifdef APP-PLUS || H5 || MP-WEIXIN || MP-QQ
this.isTap = true;
var currentSize = this.tabListSize[index];
this.updateIndicator(currentSize.left, currentSize.width);
this._touchTabIndex = index;
// #endif
this.switchTab(index);
},
onswiperchange(e) {
// 注意：百度小程序会触发2次
// #ifndef APP-PLUS || H5 || MP-WEIXIN || MP-QQ
let index = e.target.current || e.detail.current;
this.switchTab(index);
// #endif
},
onswiperscroll(e) {
if (this.isTap) {
return;
}
var offsetX = e.detail.dx;
var preloadIndex = this._lastTabIndex;
if (offsetX > TAB_PRELOAD_OFFSET) {
preloadIndex++;
} else if (offsetX < -TAB_PRELOAD_OFFSET) {
preloadIndex--;
}
if (preloadIndex === this._lastTabIndex || preloadIndex < 0 || preloadIndex > 4 - 1) {
return;
}
// if (this.pageList[preloadIndex].dataList.length === 0) {
// this.loadTabData(preloadIndex);
// }
// #ifdef APP-PLUS || H5 || MP-WEIXIN || MP-QQ
var percentage = Math.abs(this.swiperWidth / offsetX);
var currentSize = this.tabListSize[this._lastTabIndex];
var preloadSize = this.tabListSize[preloadIndex];
var lineL = currentSize.left + (preloadSize.left - currentSize.left) / percentage;
var lineW = currentSize.width + (preloadSize.width - currentSize.width) / percentage;
this.updateIndicator(lineL, lineW);
// #endif
},
animationfinish(e) {
// #ifdef APP-PLUS || H5 || MP-WEIXIN || MP-QQ
let index = e.detail.current;
if (this._touchTabIndex === index) {
this.isTap = false;
}
this._lastTabIndex = index;
this.switchTab(index);
this.updateIndicator(this.tabListSize[index].left, this.tabListSize[index].width);
// #endif
},
selectorQuery() {
// #ifdef APP-NVUE
// uni.createSelectorQuery().in(this).select('#head').boundingClientRect().exec(rect => {
// // 获取封面区高度
// this._headHeight = rect[0].height;
// });
uni.createSelectorQuery().in(this).select('#intro-box').boundingClientRect().exec(rect => {
// 获取课程简介区的位置，设为iOS端Tabs距离顶部的吸顶距离
this._headHeight = rect[0].height - 1;
console.log('3 introHeight', this._headHeight);
});
// 查询 tabbar 宽度
uni.createSelectorQuery().in(this).select('#tab-bar').boundingClientRect().exec(rect => {
this.tabbarWidth = rect[0].width;
});
// 查询 tabview 宽度
uni.createSelectorQuery().in(this).select('#tab-bar-view').boundingClientRect().exec(rect => {
this.swiperWidth = rect[0].width;
});
// 因 nvue 暂不支持 class 查询
var queryTabSize = uni.createSelectorQuery().in(this);
queryTabSize.select('#tab0').boundingClientRect();
queryTabSize.select('#tab1').boundingClientRect();
queryTabSize.select('#tab2').boundingClientRect();
queryTabSize.select('#tab3').boundingClientRect();
queryTabSize.exec(rects => {
rects.forEach((rect) => {
this.tabListSize[rect.dataset.id] = rect;
})
this.updateIndicator(this.tabListSize[this.tabIndex].left, this.tabListSize[this.tabIndex]
.width);
this.switchTab(this.tabIndex);
});
// #endif
// #ifdef MP-WEIXIN || H5 || MP-QQ
uni.createSelectorQuery().in(this).select('.tab-view').fields({
dataset: true,
size: true,
}, (res) => {
this.swiperWidth = res.width;
}).exec();
uni.createSelectorQuery().in(this).selectAll('.uni-tab-item').boundingClientRect((rects) => {
rects.forEach((rect) => {
this.tabListSize[rect.dataset.id] = rect;
})
this.updateIndicator(this.tabListSize[this.tabIndex].left, this.tabListSize[this.tabIndex]
.width);
}).exec();
// #endif
},
updateIndicator(left, width) {
this.indicatorLineLeft = left;
this.indicatorLineWidth = width;
},
switchTab(index) {
// if (this.pageList[index].dataList.length === 0) {
// this.loadTabData(index);
// }
this.setScrollRef(index,this._headHeight);
// if (this.tabIndex === index) {
// return;
// }
// // 缓存 tabId
// if (this.pageList[this.tabIndex].dataList.length > MAX_CACHE_DATA) {
// let isExist = this.cacheTab.indexOf(this.tabIndex);
// if (isExist < 0) {
// this.cacheTab.push(this.tabIndex);
// }
// }
this.tabIndex = index;
// #ifdef APP-NVUE
this.scrollTabTo(index);
// #endif
// #ifndef APP-NVUE
this.scrollInto = "tab" + index;
// #endif
// 释放 tabId
// if (this.cacheTab.length > MAX_CACHE_PAGE) {
// let cacheIndex = this.cacheTab[0];
// this.clearTabData(cacheIndex);
// this.cacheTab.splice(0, 1);
// }
},
scrollTabTo(index) {
const el = this.$refs['tabitem' + index][0];
let offset = 0;
// TODO fix ios offset
if (index > 0) {
offset = this.tabbarWidth / 2 - this.tabListSize[index].width / 2;
if (this.tabListSize[index].right < this.tabbarWidth / 2) {
offset = this.tabListSize[0].width;
}
}
dom.scrollToElement(el, {
offset: -offset
});
},
loadTabData(index) {
// this.pageList[index].loadData();
},
clearTabData(index) {
// this.pageList[index].clear();
},
onrefresh(e) {
// this.refreshing = true;
// this.refreshText = "刷新中...";
// setTimeout(() => {
// this.refreshing = false;
// this.refreshFlag = false;
// this.refreshText = "已刷新";
// }, 2000)
},
onpullingdown(e) {
if (this.refreshing) {
return;
}
this.pulling = false;
if (Math.abs(e.pullingDistance) > Math.abs(e.viewHeight)) {
this.refreshFlag = true;
this.refreshText = "释放立即刷新";
} else {
this.refreshFlag = false;
this.refreshText = "下拉可以刷新";
}
}
}
}
</script>
<style>
/* #ifndef APP-PLUS */
page {
width: 100%;
min-height: 100%;
display: flex;
}
/* #endif */
.page {
flex: 1;
}
.cover-box {
width: 750rpx;
height: 200px;
flex-direction: row;
align-items: center;
justify-content: center;
background-color: #ffffff;
}
.status-bar {
height: 44px;
color: #ffffff;
background-color: #000000;
}
.intro-box {
height: 160px;
flex-direction: row;
align-items: center;
justify-content: center;
/* background-color: #f4f4f4; */
}
.flexible-view {
background-color: #f823ff;
}
.page-head {
height: 200px;
flex-direction: column;
align-items: center;
justify-content: center;
background-color: red;
}
.tabs {
flex-direction: column;
overflow: hidden;
background-color: #ffffff;
/* #ifdef MP-ALIPAY || MP-BAIDU */
height: 100vh;
/* #endif */
}
.tab-bar {
width: 750upx;
height: 84upx;
flex-direction: row;
/* #ifndef APP-PLUS */
white-space: nowrap;
/* #endif */
}
/* #ifndef APP-NVUE */
.tab-bar ::-webkit-scrollbar {
display: none;
width: 0 !important;
height: 0 !important;
-webkit-appearance: none;
background: transparent;
}
/* #endif */
.scroll-view-indicator {
position: relative;
height: 2px;
background-color: transparent;
}
.scroll-view-underline {
position: absolute;
top: 0;
bottom: 0;
width: 0;
background-color: #007AFF;
}
.scroll-view-animation {
transition-duration: 0.2s;
transition-property: left;
}
.tab-bar-line {
height: 1upx;
background-color: #cccccc;
}
.tab-view {
flex: 1;
}
.uni-tab-item {
/* #ifndef APP-PLUS */
display: inline-block;
/* #endif */
flex-wrap: nowrap;
padding-left: 25px;
padding-right: 25px;
}
.uni-tab-item-title {
color: #555;
font-size: 30upx;
height: 80upx;
line-height: 80upx;
flex-wrap: nowrap;
/* #ifndef APP-PLUS */
white-space: nowrap;
/* #endif */
}
.uni-tab-item-title-active {
color: #007AFF;
}
.swiper-item {
flex: 1;
flex-direction: column;
}
.swiper-page {
flex: 1;
flex-direction: row;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
}
.refresh-view {
width: 750rpx;
height: 80px;
flex-direction: row;
align-items: center;
justify-content: center;
}
</style>
<style scoped>
.uni-swiper-page {
flex: 1;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
}
.list {
flex: 1;
background-color: #ebebeb;
}
.list-item {
margin-left: 12px;
margin-right: 12px;
margin-top: 12px;
padding: 20px;
background-color: #fff;
border-radius: 5px;
}
.loading {
height: 20px;
}
</style>pages.json
{
"pages": [ //pages数组中第一项表示应用启动页，参考：https://uniapp.dcloud.io/collocation/pages
{
"path": "pages/index/index",
"style": {
"navigationBarTitleText": "uni-app",
"navigationStyle": "custom"
}
}
],
"globalStyle": {
"navigationBarTextStyle": "black",
"navigationBarTitleText": "uni-app",
"navigationBarBackgroundColor": "#F8F8F8",
"backgroundColor": "#F8F8F8"
}
}
