UniApp 自定义导航栏

xz-navBar 自定义导航栏

Props

属性名	类型	是否必填	默认	可选	说明
title	String	false	''	无	导航栏标题
titleAlign	String	false	center	center(居中)、left(左边)、right(右边)	导航栏标题对齐方式
navBarStyle	Object	false	{}	无	导航栏自定义样式
navBarBottomType	String	false	border	border(边框)、shadow(阴影)	navBar下边框显示类型

Emits

事件名	接收值	说明
getNavHeight	height	接收navBar元素的高度

Slots

插槽	说明
navBarLeft	导航栏左边
navBarRight	导航栏右边

代码示例

一级导航样式

const navBarStyle = {filter: 'none',position: 'relative',backgroundColor: 'transparent'
};

<xz-navBar title="背景透明，导航占据空间" titleAlign="left" :navBarStyle="navBarStyle"></xz-navBar>
<xz-navBar title="普通" :navBarStyle="navBarStyle"></xz-navBar>

二级导航样式

<xz-navBar title="二级导航" :navBarStyle="navBarStyle"><template #navBarLeft><view class="left"><uni-icons type="left" size="28"></uni-icons></view></template>
</xz-navBar>

自定义样式

<xz-navBar><template #navBarLeft><view class="city">北京</view></template><template #navBarRight><view class="input-view"><uni-icons class="input-uni-icon" type="search" size="18" color="#999" /><input confirm-type="search" class="nav-bar-input" type="text" placeholder="输入搜索关键词" @confirm="confirm" /></view></template>
</xz-navBar>

.city {/* #ifndef APP-PLUS-NVUE */display: flex;/* #endif */flex-direction: row;align-items: center;justify-content: flex-start;// width: 160rpx;margin-left: 4px;margin-right: 10px;
}.input-view {/* #ifndef APP-PLUS-NVUE */display: flex;/* #endif */flex-direction: row;// width: 500rpx;flex: 1;background-color: #f8f8f8;height: 30px;border-radius: 15px;padding: 0 15px;flex-wrap: nowrap;margin: 7px 0;line-height: 30px;
}.input-uni-icon {line-height: 30px;
}.nav-bar-input {height: 30px;line-height: 30px;/* #ifdef APP-PLUS-NVUE */width: 370rpx;/* #endif */padding: 0 5px;font-size: 12px;background-color: #f8f8f8;
}

注意事项：

1. 需要在pages.json页面的导航栏样式设置为custom

{"path": "pages/index/index","style": {"navigationBarTitleText": "首页","navigationStyle": "custom"}
},

2. 使用自定义navBar会遮住页面顶部一个navBar的高度，需要页面添加上边距或者使用scroll-view组件更好的完成页面效果。

scroll-view配合自定义tabBar以及自定义导航

• xz-tabBar：查看
• xz-navBar：查看

<script lang="ts" setup>
import { onBeforeMount, ref, watch } from 'vue';/*** @property {String} title 页面标题* @property {String} pageKey 页面key* @property {String} navBarHeight 如果用插槽自定义导航栏则需要传入其高度* @property {String} background 页面背景颜色*/
interface Prop {title: string;pageKey: string;navBarHeight: string;background: string;
}
const props = withDefaults(defineProps<Prop>(), {});// 隐藏tabBar
onBeforeMount(() => {uni.hideTabBar();
});const list = [{text: '首页',pageKey: 'calendar',pagePath: '/pages/home/index',iconPath: '/static/tabBar/home.png',selectedIconPath: '/static/tabBar/home.png'},{text: '我的',pageKey: 'user',pagePath: '/pages/user/index',iconPath: '/static/tabBar/user.png',selectedIconPath: '/static/tabBar/user_select.png'}
];const openPage = (url: string) => {uni.switchTab({url});
};// 计算页面高度
let scrollHeight = ref<number>(0);
let navBarHeight = ref<number>(0);
let tabBarHeight = ref<number>(0);
const getNavHeight = (height: number) => {navBarHeight.value = height;
};
const getTabHeight = (height: number) => {tabBarHeight.value = height;
};watch(() => props.navBarHeight,(newVal) => {if (newVal != '0') navBarHeight.value = Number(newVal);},{deep: true,immediate: true}
);
</script><template><view class="page_common" :style="{ background }"><!-- navBar --><slot name="navBar" v-if="$slots.navBar"></slot><xz-navBar v-else :navBarStyle="{ position: 'relative' }" :title="props.title" @getNavHeight="getNavHeight"></xz-navBar><!-- 主体内容 --><scroll-view scroll-y :style="{ height: `calc(100vh - ${navBarHeight + tabBarHeight}px)` }"><view class="page_content"><slot></slot></view></scroll-view><!-- tabBar --><xz-tabBar:tabBarStyle="{ position: 'relative' }":list="list":pageKey="props.pageKey"color="#444444"selectColor="#00B386"tabBarTopType="shadow"@openPage="openPage"@getTabHeight="getTabHeight"></xz-tabBar></view>
</template><style lang="scss" scoped>
.page_common {height: 100vh;overflow: hidden;background-color: rgba(238, 238, 238, 0.2);.page_content {overflow: hidden;box-sizing: border-box;}
}
</style>