uniapp導航欄自定義圖標按鈕/搜索|uni-app自定導航條

uni-app自定義導航欄|仿微信頂部導航uni_headerBar，支持標題居左、居中、搜索條，按鈕可傳入文字/字體圖標/圖片

uniApp原生導航欄

uni-app原生導航欄也能實現一些頂部自定義按鈕+搜索框，只需在page.json裏面做一些配置即可。設置app-plus，dcloud平臺對app-plus做了詳細說明：app-plus配置，不過目前暫支持H5、App端，不支持小程序。

page.json配置app-plus

{
    "path": "pages/ucenter/index",
    "style": {
        "navigationBarTitleText": "我的",
        "app-plus": {
            "titleNView": {
                "buttons": [
                    {
                        "text": "\ue670",
                        "fontSrc": "/static/iconfont.ttf",
                        "fontSize": "22px",
                        "float": "left"
                    },
                    {
                        "text": "\ue62c",
                        "fontSrc": "/static/iconfont.ttf",
                        "fontSize": "22px"

                    }
                ],
                "searchInput":{
                    ...
                }
            }
        }
    }
},

那麼如何監聽按鈕、輸入框事件？ uni-app給出了相應API，只需把onNavigationBarButtonTap和onNavigationBarSearchInputChanged，寫在相應的頁面中即可。

uniApp自定義導航欄

如何實現像淘寶、微信頂部導航欄，支持標題居左、居中、搜索條、按鈕自定義。。。

將navigationStyle設爲custom或titleNView設爲false時，原生導航欄不顯示，這時就能自定義導航欄

` "globalStyle": { "navigationStyle": "custom" } `

具體效果實例如下：

需要注意的是  H5、小程序、App狀態欄需重新計算處理，下面爲大家提供一種處理方法，在App.vue裏面設置即可

onLaunch: function() {
    uni.getSystemInfo({
        success:function(e){
            Vue.prototype.statusBar = e.statusBarHeight
            // #ifndef MP
            if(e.platform == 'android') {
                Vue.prototype.customBar = e.statusBarHeight + 50
            }else {
                Vue.prototype.customBar = e.statusBarHeight + 45
            }
            // #endif
            
            // #ifdef MP-WEIXIN
            let custom = wx.getMenuButtonBoundingClientRect()
            Vue.prototype.customBar = custom.bottom + custom.top - e.statusBarHeight
            // #endif
            
            // #ifdef MP-ALIPAY
            Vue.prototype.customBar = e.statusBarHeight + e.titleBarHeight
            // #endif
        }
    })
},

<header-bar :isBack="false" title="標題信息" titleTintColor="#fff">
    <text slot="back" class="uni_btnIco iconfont icon-arrL"></text>
    <text slot="iconfont" class="uni_btnIco iconfont icon-search" @tap="aaa"></text>
    <text slot="iconfont" class="uni_btnIco iconfont icon-tianjia" @tap="bbb"></text>
    <!-- <text slot="string" class="uni_btnString" @tap="ccc">添加好友</text> -->
    <image slot="image" class="uni_btnImage" src="../../static/logo.png" mode="widthFix" @tap="ddd"></image>
</header-bar>

<header-bar :isBack="true" titleTintColor="#fff" :bgColor="{'background-image': 'linear-gradient(45deg, #007AFF 10%, #005cbf)'}" search>
    <text slot="back" class="uni_btnIco iconfont icon-arrL"></text>
    <text slot="iconfont" class="uni_btnIco iconfont icon-choose03" @tap="aaa"></text>
    <image slot="image" class="uni_btnImage" src="../../static/logo.png" mode="widthFix" @tap="ddd"></image>
</header-bar>

<template>
    <view class="uni_topbar" :style="style">
        <view class="inner flexbox flex_alignc" :class="[fixed ? 'fixed' : '']" :style="[{'height': customBarH + 'px', 'padding-top': statusBarH + 'px', 'color': titleTintColor}, bgColor]">
            <!-- 返回 -->
            <!-- <text class="uni_icoBack iconfont icon-arrL" v-if="isBack" @tap="goBack"></text> -->
            <view v-if="isBack" @tap="goBack">
                <slot name="back"></slot>
            </view>
            <slot name="headerL"></slot>
            <!-- 標題 -->
            <!-- #ifndef MP -->
            <view class="flex1" v-if="!search && center"></view>
            <!-- #endif -->
            <view class="uni_title flex1" :class="[center ? 'uni_titleCenter' : '']" :style="[isBack ? {'font-size': '32upx', 'padding-left': '0'} : '']" v-if="!search && title">
                {{title}}
            </view>
            <view class="uni_search flex1" :class="[searchRadius ? 'uni_searchRadius' : '']" v-if="search"> />
                <input class="uni_searchIpt flex1" type="text" placeholder="搜索" placeholder-style="color: rgba(255,255,255,.5);" />
            </view>
            <!-- 右側 -->
            <view class="uni_headerRight flexbox flex_row flex_alignc">
                <slot name="iconfont"></slot>
                <slot name="string"></slot>
                <slot name="image"></slot>
            </view>
        </view>
    </view>
</template>

<script>
    export default {
        data() {
            return {
                statusBarH: this.statusBar,
                customBarH: this.customBar
            }
        },
        props: {
            isBack: { type: [Boolean, String], default: true },
            title: { type: String, default: '' },
            titleTintColor: { type: String, default: '#fff' },
            bgColor: Object,
            center: { type: [Boolean, String], default: false },
            search: { type: [Boolean, String], default: false },
            searchRadius: { type: [Boolean, String], default: false },
            fixed: { type: [Boolean, String], default: false },
        },
        computed: {
            style() {
                let _style = `height: ${this.customBarH}px;`
                return _style
            }
        },
        methods: {
            goBack() {
                uni.navigateBack()
            }
        }
    }
</script>