微信小程序自定义头部导航栏（组件化）

网络编程 2024/11/8 佚名

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本文实例为大家分享了微信小程序自定义头部导航栏的具体代码，供大家参考，具体内容如下

效果图

支持导航栏自定义背景颜色、背景图片支持返回文字自定义支持导航标题自定义

首先在app.json window配置项添加

"window": {
 "navigationStyle": "custom"
 }

自定义头部导航栏代码

wxml部分

<view class="cu-custom" style="height:{{CustomBar}}px">
 <view class="cu-bar {{bgImage!=''" style="height:{{CustomBar}}px;padding-top:{{StatusBar}}px;{{bgImage">
 <view class="action" bindtap="BackPage" wx:if="{{!isShare && isBack}}">
  <text class="icon-back"></text>
  <slot name="backText"></slot>
 </view>
 <view class="action border-custom" wx:if="{{isShare && isBack}}" style="width:{{Custom.width}}px;height:{{Custom.height}}px;margin-left:calc(750rpx - {{Custom.right}}px)">
  <text class="icon-back" bindtap="BackPage"></text>
  <text class="icon-homefill" bindtap="toHome"></text>
 </view>
 <view class="content" style="top:{{StatusBar}}px">
  <slot name="content"></slot>
 </view>
 </view>
</view>

wxss部分

.cu-custom { display: block; position: relative; }
.cu-custom .cu-bar {display: flex; align-items: center; justify-content: space-between;position: fixed; width: 100%; top: 0; min-height: 100rpx; padding-right: 220rpx; box-shadow: 0rpx 0rpx 0rpx; z-index: 9999; background-color: #fff; }
.cu-custom .cu-bar .border-custom { position: relative; background: rgba(255,255,255,0.5); border-radius: 1000rpx; height: 30px; }
.cu-custom .cu-bar .action { display: flex; align-items: center; height: 100%; justify-content: center; max-width: 100%; }
.cu-custom .cu-bar .action:first-child { margin-left: 30rpx; font-size: 30rpx; }
.cu-custom .cu-bar .border-custom text { display: block; flex: 1; margin: auto !important; text-align: center; font-size: 34rpx; }
.cu-bar .content { width: calc(100% - 440rpx);position: absolute; text-align: center; left: 0; right: 0; bottom: 0; top: 0; margin: auto; height: 60rpx; font-size: 32rpx; line-height: 60rpx; cursor: none; pointer-events: none; text-overflow: ellipsis; white-space: nowrap; overflow: hidden; }

js部分

const App = getApp();
Component({
 options: {
 addGlobalClass: true,
 multipleSlots: true
 },
 properties: {
 isBack: {
 type: [Boolean, String],
 default: false
 },
 bgColor: { // 类名
  type: String,
  default: ''
  }, 
  bgImage: { // 仅支持网络地址
  type: String,
  default: ''
  },
 },
 data: {
 StatusBar: App.GlobalData.StatusBar,
 CustomBar: App.GlobalData.CustomBar,
 Custom: App.GlobalData.Custom,
 isShare: App.GlobalData.share
 },
 methods: {
 BackPage() {
 wx.navigateBack({
 delta: 1
 });
 },
 toHome() {
 wx.reLaunch({
 url: '/pages/index/index',
 })
 }
 }
})

app.js 判断是否分享

App({
 GlobalData: {
 share: false,
 StatusBar: 0,
 Custom: 0,
 CustomBar: 0
 },
 onLaunch: function () {
 let self = this
 let systemInfo = wx.getSystemInfoSync()
 self.GlobalData.StatusBar = systemInfo.statusBarHeight;
 if (wx.getMenuButtonBoundingClientRect) {
 let custom = wx.getMenuButtonBoundingClientRect();
 self.GlobalData.Custom = custom;
 self.GlobalData.CustomBar = custom.bottom + custom.top - systemInfo.statusBarHeight;
 }
 })

因为组件css里不支持伪类元素所以写在 app.css

/* 自定义头部导航栏图标 */
.cu-custom [class*="icon-"] { font-family: "iconfont" !important; font-size: inherit; font-style: normal; }

@font-face {font-family: "iconfont";
 src: url('iconfont.eot"iconfont" !important;font-size: 16px;font-style: normal;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: grayscale; }
.icon-homefill:before { content: "\e6fc"; }
.icon-back:before { content: "\e67a"; }
.cu-custom .cu-bar .border-custom::after { content: " "; width: 200%; height: 200%; position: absolute; top: 0; left: 0; border-radius: inherit; transform: scale(0.5); transform-origin: 0 0; pointer-events: none; box-sizing: border-box; border: 1rpx solid rgba(0,0,0,0.3); opacity: 0.5; }
.cu-custom .cu-bar .border-custom::before { content: " "; width: 1rpx; height: 110%; position: absolute; top: 22.5%; left: 0; right: 0; margin: auto; transform: scale(0.5); transform-origin: 0 0; pointer-events: none; box-sizing: border-box; opacity: 0.6; background-color: rgba(0,0,0,0.3); }

开发工具显示不正常主要以真机显示为主具体可根据自己的需求修改

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

微信小程序,导航栏