index.vue
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<template>
<view class="tab-block">
<view class='tab-list flex flex-center' :class="showMiddleButton === true?'tab-list-middle':'tab-list-default'">
<view v-for="(item, index) in tabList"
:class="'list-item flex flex-column flex-middle ' + item.middleClass"
@tap="handlePush(item, index)"
:key="index">
<view class="item-img-box">
<image
class="item-img"
:src="currentTabIndex == index ? item.selectedIconPath : item.iconPath"/>
</view>
<view class="item-text font-20 color-black" :class="{ specialColor: currentTabIndex == index}">
{{item.text}}
</view>
</view>
</view>
</view>
</template>
<script>
export default {
props: {
// 当前选中的tab项，如果不传则自动根据当前页面路径计算
tabIndex: {
type: Number,
default: null
}
},
data() {
return {
tabList: [
{
iconPath:"/static/tabBar/icon2.png",
selectedIconPath: "/static/tabBar/icon1.png",
text: '首页',
pagePath: '/pages/home/home',
middleClass: ''
},
{
iconPath:"/static/tabBar/icon2.png",
selectedIconPath: "/static/tabBar/icon1.png",
text: '日志',
pagePath: '/pages/home/home',
middleClass: ''
},
{
iconPath: "/static/tabBar/icon4.png",
selectedIconPath: "/static/tabBar/icon3.png",
text: '数据中心',
pagePath: '/pages/information/information',
middleClass: ''
},
{
iconPath: "/static/tabBar/icon6.png",
selectedIconPath: "/static/tabBar/icon5.png",
text: '我的',
pagePath: '/pages/me/me',
middleClass: ''
}
],
showMiddleButton: false,
};
},
computed: {
// 自动计算当前选中的tab索引
currentTabIndex() {
// 如果外部传入了 tabIndex，优先使用外部传入的值
if (this.tabIndex !== null && this.tabIndex !== undefined) {
return this.tabIndex;
}
// 否则根据当前页面路径自动计算
const pages = getCurrentPages();
if (pages.length === 0) return 0;
const currentPage = pages[pages.length - 1];
const currentPath = '/' + currentPage.route;
// 查找匹配的tab项
const matchedIndex = this.tabList.findIndex(item => {
return currentPath === item.pagePath || currentPath.startsWith(item.pagePath);
});
return matchedIndex >= 0 ? matchedIndex : 0;
}
},
methods: {
// 点击按钮
handlePush(item, index) {
if (this.currentTabIndex !== index) {
uni.reLaunch({
url: item.pagePath
})
}
}
}
}
</script>
<style lang="scss">
.specialColor{
color:#009b4d;
}
.flex {
display: flex;
flex-flow: row wrap;
}
.flex-center {
align-items: center;
justify-content: center;
}
.flex-column {
flex-direction: column;
}
.flex-middle {
align-items: center;
}
.font-20 {
font-size: 22rpx;
}
.tab-block {
position: fixed;
bottom: 32rpx;
left: 50%;
transform: translateX(-50%);
z-index: 999;
width: calc(100% - 48rpx);
// max-width: 680rpx;
padding: 0 24rpx;
box-sizing: border-box;
.tab-list{
height: 120rpx;
}
.tab-list-default{
background-color: rgba(255, 255, 255, 0.85);
border-radius: 28rpx;
box-shadow: 0rpx 4rpx 20rpx rgba(0, 0, 0, 0.1);
backdrop-filter: blur(10rpx);
}
.tab-list-middle {
position: relative;
background: url('https://res.paquapp.com/popmartvip/home/nav_bar_bg_2x.png') no-repeat center center;
background-size: cover;
}
.list-item {
flex: 1;
.item-img-box {
width: 40rpx;
height: 40rpx;
margin-bottom: 6rpx;
position: relative;
}
.item-img {
width: 40rpx;
height: 40rpx;
}
}
.mid-button {
position: relative;
.item-img-box {
width: 106rpx;
height: 106rpx;
margin-bottom: 9rpx;
position: absolute;
z-index: 1002;
top: -104rpx;
}
.item-img {
width: 106rpx;
height: 106rpx;
}
.item-text {
font-size: 20rpx;
position: absolute;
z-index: 1002;
bottom: -40rpx;
}
}
}
</style>