xlx_teacher_app/src/tabbar/index.vue

<script setup lang="ts">
// 'i-carbon:home', 'i-carbon:user-multiple', 'i-carbon:user'
//
// icon: 'i-mingcute:home-5-line',
// activeIcon: 'i-mingcute:home-5-fill',
//
// icon: 'i-mingcute:group-2-line',
// activeIcon: 'i-mingcute:group-2-fill',
//
// icon: 'i-mingcute:user-4-line',
// activeIcon: 'i-mingcute:user-4-fill',

import { customTabbarList as _tabBarList, customTabbarEnable, nativeTabbarNeedHide, tabbarCacheEnable } from './config'
import { tabbarStore } from './store'

// #ifdef MP-WEIXIN
// 将自定义节点设置成虚拟的（去掉自定义组件包裹层），更加接近Vue组件的表现，能更好的使用flex属性
defineOptions({
  virtualHost: true,
})
// #endif

// TODO 1/2: 中间的鼓包tabbarItem的开关
const BULGE_ENABLE = false
function handleClickBulge() {
  uni.showToast({
    title: '点击了中间的鼓包tabbarItem',
    icon: 'none',
  })
}

/** tabbarList 里面的 path 从 pages.config.ts 得到 */
const tabbarList = _tabBarList.map(item => ({ ...item, path: `/${item.pagePath}` }))
if (BULGE_ENABLE) {
  if (tabbarList.length % 2 === 1) {
    console.error('tabbar 数量必须是偶数，否则样式很奇怪！！')
  }
  tabbarList.splice(tabbarList.length / 2, 0, {
    isBulge: true,
  } as any)
}
function handleClick(index: number) {
  // 点击原来的不做操作
  if (index === tabbarStore.curIdx) {
    return
  }
  if (tabbarList[index].isBulge) {
    handleClickBulge()
    return
  }
  const url = tabbarList[index].path
  tabbarStore.setCurIdx(index)
  if (tabbarCacheEnable) {
    uni.switchTab({ url })
  }
  else {
    uni.navigateTo({ url })
  }
}
onLoad(() => {
  // 解决原生 tabBar 未隐藏导致有2个 tabBar 的问题
  nativeTabbarNeedHide
  && uni.hideTabBar({
    fail(err) {
      console.log('hideTabBar fail: ', err)
    },
    success(res) {
      // console.log('hideTabBar success: ', res)
    },
  })
})

// 每次页面显示时，根据当前路径自动同步 tabbar 选中状态
onShow(() => {
  const pages = getCurrentPages()
  const currentPage = pages[pages.length - 1]
  if (currentPage?.route) {
    // route 不带前导斜杠，与 pagePath 格式一致
    tabbarStore.setAutoCurIdx(currentPage.route)
  }
})
const activeColor = '#1890ff'
const inactiveColor = '#666'
function getColorByIndex(index: number) {
  return tabbarStore.curIdx === index ? activeColor : inactiveColor
}

function getImageByIndex(index: number, item: { iconActive?: string, icon: string }) {
  if (!item.iconActive) {
    console.warn('image 模式下，需要配置 iconActive (高亮时的图片），否则无法切换高亮图片')
    return item.icon
  }
  return tabbarStore.curIdx === index ? item.iconActive : item.icon
}
</script>

<template>
  <view v-if="customTabbarEnable" class="relative z-50">
    <view class="w-full pb-safe" style="height: 100rpx;" />

    <view class="tabbar-wrap bg-white pb-safe">
      <view class="h-full w-full flex items-center justify-around">
        <view
          v-for="(item, index) in tabbarList"
          :key="index"
          class="flex flex-1 flex-col items-center justify-center py-1 active:opacity-70"
          @click="handleClick(index)"
        >
          <view class="relative flex items-center justify-center">
            <view
              class="transition-all duration-200"
              :class="[
                tabbarStore.curIdx === index ? item.activeIcon : item.icon,
                tabbarStore.curIdx === index ? 'text-blue-600 tab-icon-active' : 'text-slate-400 tab-icon-normal',
              ]"
            />

            <view v-if="item.badge" class="absolute z-10 -right-1 -top-1">
              <view class="h-2 w-2 rounded-full bg-red-500 ring-2 ring-white" />
            </view>
          </view>

          <text
            class="tab-text mt-0.5 font-medium transition-colors duration-200"
            :class="tabbarStore.curIdx === index ? 'text-blue-600' : 'text-slate-400'"
          >
            {{ item.text }}
          </text>
        </view>
      </view>
    </view>
  </view>
</template>

<style scoped lang="scss">
/* 核心容器：高度固定为 100rpx (50px) */
.tabbar-wrap {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100rpx; /* 标准高度 */
  border-top: 1px solid #f8fafc;
  box-shadow: 0 -2rpx 10rpx rgba(0, 0, 0, 0.02);
  z-index: 10;
}

/* 安全区适配 */
.pb-safe {
  padding-bottom: constant(safe-area-inset-bottom);
  padding-bottom: env(safe-area-inset-bottom);
}

/* 图标尺寸控制 */
.tab-icon-normal {
  font-size: 44rpx; /* 约 22px */
}

.tab-icon-active {
  font-size: 48rpx; /* 选中稍微大一点点，约 24px */
  transform: translateY(-1px); /* 微微上浮，增加灵动感 */
}

/* 文字尺寸控制 - 比 text-xs (24rpx) 更小更精致 */
.tab-text {
  font-size: 20rpx; /* 10px */
  line-height: 1.2;
}
</style>