2025-12-03 18:58:36 +08:00
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<template>
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<view
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class="custom-tabbar"
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v-show="shouldShowTabbar"
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>
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<view
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v-for="(item, index) in tabList"
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:key="index"
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class="tabbar-item"
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:class="{ active: currentIndex === index }"
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@click="switchTab(item, index)"
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>
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<view class="tabbar-icon">
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<image
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v-if="item.iconPath"
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:src="item.iconPath"
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class="tabbar-icon-image"
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mode="aspectFit"
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></image>
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2025-12-10 22:53:20 +08:00
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<text
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v-else-if="item.emoji"
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class="tabbar-emoji"
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:style="{ opacity: currentIndex === index ? 1 : 0.6 }"
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>{{ item.emoji }}</text>
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2025-12-03 18:58:36 +08:00
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<u-icon
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v-else
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:name="item.icon"
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:color="currentIndex === index ? '#378CE0' : '#7A7E83'"
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size="44"
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></u-icon>
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</view>
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<text
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class="tabbar-text"
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:style="{ color: currentIndex === index ? '#378CE0' : '#7A7E83' }"
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>{{ item.text }}</text>
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</view>
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</view>
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</template>
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<script>
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import { mapGetters } from 'vuex'
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export default {
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name: 'CustomTabbar',
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computed: {
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...mapGetters('auth', ['userRole']),
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tabList() {
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// 定义 tabBar 页面列表(在 pages.json 的 tabBar.list 中配置的页面)
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const tabBarPages = [
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'pages/index/index',
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'pages/course/list',
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'pages/exam/index',
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'pages/profile/profile'
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]
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// 根据用户角色返回不同的导航项
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if (this.userRole === 'teacher') {
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// 教师端导航
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return [
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{
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pagePath: 'pages/index/index',
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icon: 'home',
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emoji: '🏠',
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text: '首页',
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isTabBar: true
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},
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{
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pagePath: 'pages/exam/teacher-list',
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icon: 'file-text',
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emoji: '📝',
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text: '考试',
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isTabBar: false
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},
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{
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pagePath: 'pages/student/list',
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icon: 'account',
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emoji: '👥',
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text: '学生',
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isTabBar: false
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},
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{
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pagePath: 'pages/profile/profile',
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icon: 'account',
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emoji: '👤',
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2025-12-03 18:58:36 +08:00
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text: '我的',
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isTabBar: true
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}
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]
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} else {
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// 学生端导航(默认)
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return [
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{
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pagePath: 'pages/index/index',
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icon: 'home',
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2025-12-10 22:53:20 +08:00
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emoji: '🏠',
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2025-12-03 18:58:36 +08:00
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text: '首页',
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isTabBar: true
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},
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{
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pagePath: 'pages/course/list',
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icon: 'list',
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emoji: '📚',
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text: '课程',
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isTabBar: true
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},
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{
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pagePath: 'pages/exam/index',
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icon: 'file-text',
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iconPath: '/static/icon/kaoshi.png',
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text: '考核',
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isTabBar: true
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},
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{
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pagePath: 'pages/profile/profile',
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icon: 'account',
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2025-12-10 22:53:20 +08:00
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emoji: '👤',
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2025-12-03 18:58:36 +08:00
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text: '我的',
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isTabBar: true
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}
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]
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}
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}
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},
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data() {
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return {
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currentIndex: 0,
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pageWatcherTimer: null,
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lastPath: '',
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updateTimer: null, // 防抖定时器
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shouldShowTabbar: true // 是否显示 tabBar
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}
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},
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mounted() {
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// 初始化时立即更新一次(不使用防抖)
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this.updateCurrentIndex()
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this.checkShouldShowTabbar()
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// 监听全局页面切换事件
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uni.$on('tabbar-update', this.handleTabbarUpdate)
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// 使用定时器定期检查页面状态(作为备用方案)
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this.startPageWatcher()
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},
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watch: {
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// 监听tabList变化,确保路径匹配正确
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tabList: {
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handler() {
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// tabList变化时,使用统一更新方法
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this.$nextTick(() => {
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this.handleTabbarUpdate()
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})
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},
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immediate: true
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}
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},
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beforeDestroy() {
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// 清理监听器
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if (this.pageListener) {
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uni.$off('navigateTo', this.pageListener)
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uni.$off('switchTab', this.pageListener)
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}
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// 移除全局事件监听
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uni.$off('tabbar-update', this.handleTabbarUpdate)
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// 清除定时器
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if (this.pageWatcherTimer) {
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clearInterval(this.pageWatcherTimer)
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}
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// 清除防抖定时器
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if (this.updateTimer) {
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clearTimeout(this.updateTimer)
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}
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},
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methods: {
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handleTabbarUpdate() {
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// 统一的更新入口,使用防抖避免频繁更新
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if (this.updateTimer) {
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clearTimeout(this.updateTimer)
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}
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this.updateTimer = setTimeout(() => {
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this.updateCurrentIndex()
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this.checkShouldShowTabbar()
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}, 100) // 100ms防抖,确保更稳定
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},
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checkShouldShowTabbar() {
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try {
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const pages = getCurrentPages()
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if (!pages || pages.length === 0) {
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this.shouldShowTabbar = true
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return
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}
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const currentPage = pages[pages.length - 1]
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if (!currentPage || !currentPage.route) {
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this.shouldShowTabbar = true
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return
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}
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const currentPath = currentPage.route
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// 检查当前页面是否是 tabBar 页面
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const isTabBarPage = this.tabList.some(item =>
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item.pagePath === currentPath && item.isTabBar
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)
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// 只在 tabBar 页面显示自定义 tabBar
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this.shouldShowTabbar = isTabBarPage
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} catch (e) {
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// 出错时默认显示
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this.shouldShowTabbar = true
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}
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},
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startPageWatcher() {
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// 定期检查页面路径变化(作为备用方案,频率降低)
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// 只在事件机制失效时作为兜底方案
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this.pageWatcherTimer = setInterval(() => {
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try {
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const pages = getCurrentPages()
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if (pages && pages.length > 0) {
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const currentPage = pages[pages.length - 1]
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if (currentPage && currentPage.route) {
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const currentPath = currentPage.route
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// 如果路径发生变化,且与上次记录的路径不同,才更新
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if (currentPath !== this.lastPath) {
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this.lastPath = currentPath
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// 使用统一的更新方法
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this.handleTabbarUpdate()
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}
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}
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}
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} catch (e) {
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// 静默处理错误
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}
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}, 800) // 进一步降低频率到800ms,减少不必要的检查
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},
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setupPageListener() {
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// 监听页面切换事件,实时更新导航栏状态
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this.pageListener = () => {
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// 延迟更新,确保页面已经切换完成(使用统一更新方法)
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setTimeout(() => {
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this.handleTabbarUpdate()
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}, 100)
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}
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// 注意:uniapp可能不支持这些事件,这里作为备用方案
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// 主要依赖全局事件和定时器
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},
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updateCurrentIndex() {
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try {
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const pages = getCurrentPages()
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if (!pages || pages.length === 0) {
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if (this.currentIndex !== 0) {
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this.currentIndex = 0
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}
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return
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}
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const currentPage = pages[pages.length - 1]
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if (!currentPage || !currentPage.route) {
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if (this.currentIndex !== 0) {
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this.currentIndex = 0
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}
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return
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}
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// 获取当前页面路径(不带前导斜杠)
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const currentPath = currentPage.route
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// 如果路径没有变化,且索引已经正确,直接返回
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if (currentPath === this.lastPath && this.currentIndex !== undefined) {
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// 验证当前索引是否正确
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const expectedIndex = this.tabList.findIndex(item => item.pagePath === currentPath)
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if (expectedIndex !== -1 && this.currentIndex === expectedIndex) {
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return // 路径和索引都正确,无需更新
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}
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}
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// 更新路径记录
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this.lastPath = currentPath
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// 检查是否应该显示 tabBar
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this.checkShouldShowTabbar()
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// 精确匹配路径,优先匹配 tabBar 页面
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let index = this.tabList.findIndex(item => {
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return item.pagePath === currentPath && item.isTabBar
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})
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// 如果没找到 tabBar 页面,再查找所有页面(包括非 tabBar)
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if (index === -1) {
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index = this.tabList.findIndex(item => {
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return item.pagePath === currentPath
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})
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}
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|
|
|
|
|
|
|
|
// 如果找到的是非 tabBar 页面,找到对应的 tabBar 页面索引
|
|
|
|
|
|
if (index !== -1 && !this.tabList[index].isTabBar) {
|
|
|
|
|
|
// 对于教师端,如果当前在考试管理页面,高亮"考试"项(索引1)
|
|
|
|
|
|
if (currentPath === 'pages/exam/teacher-list') {
|
|
|
|
|
|
index = 1 // 考试项的索引
|
|
|
|
|
|
}
|
|
|
|
|
|
// 对于教师端,如果当前在学生管理页面,高亮"学生"项(索引2)
|
|
|
|
|
|
else if (currentPath === 'pages/student/list') {
|
|
|
|
|
|
index = 2 // 学生项的索引
|
|
|
|
|
|
}
|
|
|
|
|
|
} else if (index === -1) {
|
|
|
|
|
|
// 如果完全找不到匹配的页面,尝试匹配部分路径
|
|
|
|
|
|
for (let i = 0; i < this.tabList.length; i++) {
|
|
|
|
|
|
const tab = this.tabList[i]
|
|
|
|
|
|
// 检查当前路径是否包含tab路径,或者tab路径是否包含当前路径
|
|
|
|
|
|
if (currentPath.includes(tab.pagePath) || tab.pagePath.includes(currentPath)) {
|
|
|
|
|
|
index = i
|
|
|
|
|
|
break
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
const finalIndex = index !== -1 ? index : 0
|
|
|
|
|
|
// 只有当索引真正改变时才更新,避免不必要的重新渲染和跳动
|
|
|
|
|
|
if (this.currentIndex !== finalIndex) {
|
|
|
|
|
|
this.currentIndex = finalIndex
|
|
|
|
|
|
}
|
|
|
|
|
|
} catch (e) {
|
|
|
|
|
|
console.error('获取当前页面索引失败:', e)
|
|
|
|
|
|
if (this.currentIndex !== 0) {
|
|
|
|
|
|
this.currentIndex = 0
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
switchTab(item, index) {
|
|
|
|
|
|
// 如果点击的是当前页面,不执行切换
|
|
|
|
|
|
if (this.currentIndex === index) {
|
|
|
|
|
|
return
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
const url = '/' + item.pagePath
|
|
|
|
|
|
|
|
|
|
|
|
// 判断是否为 tabBar 页面
|
|
|
|
|
|
if (item.isTabBar) {
|
|
|
|
|
|
// 先更新索引,避免延迟导致的视觉跳动
|
|
|
|
|
|
this.currentIndex = index
|
|
|
|
|
|
|
|
|
|
|
|
// tabBar 页面使用 switchTab
|
|
|
|
|
|
// switchTab会自动处理从非tabBar页面切换到tabBar页面的情况
|
|
|
|
|
|
uni.switchTab({
|
|
|
|
|
|
url: url,
|
|
|
|
|
|
success: () => {
|
|
|
|
|
|
// 更新路径记录
|
|
|
|
|
|
this.lastPath = item.pagePath
|
|
|
|
|
|
// 延迟触发更新事件,确保页面已经完全切换
|
|
|
|
|
|
// 使用统一的事件机制,避免直接调用
|
|
|
|
|
|
setTimeout(() => {
|
|
|
|
|
|
uni.$emit('tabbar-update')
|
|
|
|
|
|
}, 150)
|
|
|
|
|
|
},
|
|
|
|
|
|
fail: (err) => {
|
|
|
|
|
|
console.error('切换tab失败:', err)
|
|
|
|
|
|
// 切换失败,恢复之前的索引(使用统一更新方法)
|
|
|
|
|
|
this.handleTabbarUpdate()
|
|
|
|
|
|
uni.showToast({
|
|
|
|
|
|
title: '切换失败',
|
|
|
|
|
|
icon: 'none'
|
|
|
|
|
|
})
|
|
|
|
|
|
}
|
|
|
|
|
|
})
|
|
|
|
|
|
} else {
|
|
|
|
|
|
// 非 tabBar 页面
|
|
|
|
|
|
// 先检查当前是否在tabBar页面
|
|
|
|
|
|
const pages = getCurrentPages()
|
|
|
|
|
|
const currentPage = pages[pages.length - 1]
|
|
|
|
|
|
const currentPath = currentPage.route
|
|
|
|
|
|
const currentTab = this.tabList.find(tab => tab.pagePath === currentPath)
|
|
|
|
|
|
|
|
|
|
|
|
// 如果当前在非tabBar页面,且要跳转到另一个非tabBar页面
|
|
|
|
|
|
// 使用reLaunch清空页面栈(reLaunch不能用于tabBar页面,所以这里安全)
|
|
|
|
|
|
if (currentTab && !currentTab.isTabBar) {
|
|
|
|
|
|
uni.reLaunch({
|
|
|
|
|
|
url: url,
|
|
|
|
|
|
success: () => {
|
|
|
|
|
|
this.currentIndex = index
|
|
|
|
|
|
},
|
|
|
|
|
|
fail: (err) => {
|
|
|
|
|
|
console.error('导航失败:', err)
|
|
|
|
|
|
uni.showToast({
|
|
|
|
|
|
title: '导航失败',
|
|
|
|
|
|
icon: 'none'
|
|
|
|
|
|
})
|
|
|
|
|
|
}
|
|
|
|
|
|
})
|
|
|
|
|
|
} else {
|
|
|
|
|
|
// 从tabBar页面跳转到非tabBar页面,使用navigateTo
|
|
|
|
|
|
uni.navigateTo({
|
|
|
|
|
|
url: url,
|
|
|
|
|
|
success: () => {
|
|
|
|
|
|
// 非 tabBar 页面也更新 currentIndex,以高亮对应的导航项
|
|
|
|
|
|
this.currentIndex = index
|
|
|
|
|
|
},
|
|
|
|
|
|
fail: (err) => {
|
|
|
|
|
|
console.error('导航失败:', err)
|
|
|
|
|
|
// 如果navigateTo失败(可能是页面栈已满),尝试使用reLaunch
|
|
|
|
|
|
if (err.errMsg && err.errMsg.includes('navigateTo')) {
|
|
|
|
|
|
uni.reLaunch({
|
|
|
|
|
|
url: url,
|
|
|
|
|
|
success: () => {
|
|
|
|
|
|
this.currentIndex = index
|
|
|
|
|
|
},
|
|
|
|
|
|
fail: (reLaunchErr) => {
|
|
|
|
|
|
console.error('reLaunch也失败:', reLaunchErr)
|
|
|
|
|
|
uni.showToast({
|
|
|
|
|
|
title: '导航失败',
|
|
|
|
|
|
icon: 'none'
|
|
|
|
|
|
})
|
|
|
|
|
|
}
|
|
|
|
|
|
})
|
|
|
|
|
|
} else {
|
|
|
|
|
|
uni.showToast({
|
|
|
|
|
|
title: '导航失败',
|
|
|
|
|
|
icon: 'none'
|
|
|
|
|
|
})
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
})
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
</script>
|
|
|
|
|
|
|
|
|
|
|
|
<style lang="scss" scoped>
|
|
|
|
|
|
.custom-tabbar {
|
|
|
|
|
|
position: fixed;
|
|
|
|
|
|
bottom: 0;
|
|
|
|
|
|
left: 0;
|
|
|
|
|
|
right: 0;
|
|
|
|
|
|
display: flex;
|
|
|
|
|
|
align-items: center;
|
|
|
|
|
|
justify-content: space-around;
|
|
|
|
|
|
background: #fff;
|
|
|
|
|
|
border-top: 1rpx solid #f0f0f0;
|
|
|
|
|
|
padding: 10rpx 0;
|
|
|
|
|
|
padding-bottom: calc(10rpx + env(safe-area-inset-bottom));
|
|
|
|
|
|
z-index: 999;
|
|
|
|
|
|
box-shadow: 0 -2rpx 10rpx rgba(0, 0, 0, 0.05);
|
|
|
|
|
|
/* 防止布局跳动 */
|
|
|
|
|
|
contain: layout style paint;
|
|
|
|
|
|
backface-visibility: hidden;
|
|
|
|
|
|
-webkit-backface-visibility: hidden;
|
|
|
|
|
|
|
|
|
|
|
|
@media (min-width: 768px) {
|
|
|
|
|
|
max-width: 1200rpx;
|
|
|
|
|
|
left: 50%;
|
|
|
|
|
|
transform: translateX(-50%);
|
|
|
|
|
|
border-left: 1rpx solid #f0f0f0;
|
|
|
|
|
|
border-right: 1rpx solid #f0f0f0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.tabbar-item {
|
|
|
|
|
|
flex: 1;
|
|
|
|
|
|
display: flex;
|
|
|
|
|
|
flex-direction: column;
|
|
|
|
|
|
align-items: center;
|
|
|
|
|
|
justify-content: center;
|
|
|
|
|
|
padding: 8rpx 0;
|
|
|
|
|
|
transition: color 0.2s ease;
|
|
|
|
|
|
/* 防止布局跳动 */
|
|
|
|
|
|
min-height: 0;
|
|
|
|
|
|
contain: layout style;
|
|
|
|
|
|
|
|
|
|
|
|
@media (min-width: 768px) {
|
|
|
|
|
|
padding: 10rpx 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.tabbar-icon {
|
|
|
|
|
|
margin-bottom: 4rpx;
|
|
|
|
|
|
display: flex;
|
|
|
|
|
|
align-items: center;
|
|
|
|
|
|
justify-content: center;
|
|
|
|
|
|
transition: transform 0.2s ease, color 0.2s ease;
|
|
|
|
|
|
transform-origin: center center;
|
|
|
|
|
|
/* 使用GPU加速,避免重排 */
|
|
|
|
|
|
will-change: transform;
|
|
|
|
|
|
backface-visibility: hidden;
|
|
|
|
|
|
-webkit-backface-visibility: hidden;
|
|
|
|
|
|
|
|
|
|
|
|
@media (min-width: 768px) {
|
|
|
|
|
|
margin-bottom: 6rpx;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.tabbar-icon-image {
|
|
|
|
|
|
width: 44rpx;
|
|
|
|
|
|
height: 44rpx;
|
|
|
|
|
|
|
|
|
|
|
|
@media (min-width: 768px) {
|
|
|
|
|
|
width: 48rpx;
|
|
|
|
|
|
height: 48rpx;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
2025-12-10 22:53:20 +08:00
|
|
|
|
|
|
|
|
|
|
.tabbar-emoji {
|
|
|
|
|
|
font-size: 44rpx;
|
|
|
|
|
|
line-height: 1;
|
|
|
|
|
|
transition: opacity 0.2s ease;
|
|
|
|
|
|
|
|
|
|
|
|
@media (min-width: 768px) {
|
|
|
|
|
|
font-size: 48rpx;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
2025-12-03 18:58:36 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.tabbar-text {
|
|
|
|
|
|
font-size: 22rpx;
|
|
|
|
|
|
font-weight: 500;
|
|
|
|
|
|
transition: color 0.2s ease;
|
|
|
|
|
|
line-height: 1.2;
|
|
|
|
|
|
/* 防止文字重排 */
|
|
|
|
|
|
white-space: nowrap;
|
|
|
|
|
|
|
|
|
|
|
|
@media (min-width: 768px) {
|
|
|
|
|
|
font-size: 24rpx;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
&.active {
|
|
|
|
|
|
.tabbar-icon {
|
|
|
|
|
|
transform: scale(1.05);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
</style>
|
|
|
|
|
|
|