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這篇文章主要介紹了微信小程序開發中怎么自定義導航欄的相關知識,內容詳細易懂,操作簡單快捷,具有一定借鑒價值,相信大家閱讀完這篇微信小程序開發中怎么自定義導航欄文章都會有所收獲,下面我們一起來看看吧。
CustomNavBar.wxml
<template name="CustomNavBar"> <block wx:if="{{ showNavBar }}"> <!-- 自定義導航欄懸浮時,卡空行 --> <block wx:if="{{ needFixed }}"> <view ></view> </block> <view class="custom-navbar-con relative {{ iOS ? ' ios ' : ' android ' }}" > <view class="custom-navbar-statusbar-con relative" ></view> <view class="custom-navbar-content relative" > <!-- iOS端的導航欄顯示方式 --> <block wx:if="{{ navTitle && navTitle.length > 0 }}"> <view class="custom-navbar-title ios">{{ navTitle }}</view> </block> <block wx:if="{{ showLeftMenu }}"> <view class="custom-navbar-left-menu-con clearfix" > <block wx:if="{{ showBackBtn }}"> <view class="custom-navbar-icon-btn pull-left back" bindtap="customNavBarBack"> <image class="icon" src="../../image/icon-nav-back.png" mode="aspectFit" /> <text class="text"></text> </view> </block> <block wx:if="{{ showHomeBtn }}"> <view class="custom-navbar-icon-btn pull-left home" bindtap="customNavBarBackToHome"> <image class="icon" src="../../image/icon-nav-home.png" mode="aspectFit" /> <text class="text"></text> </view> </block> <!-- android端的導航欄顯示方式 --> <block wx:if="{{ navTitle && navTitle.length > 0 }}"> <view class="custom-navbar-title android pull-left" >{{ navTitle }}</view> </block> </view> </block> </view> </view> </block> </template>
CustomNavBar.wxss
.custom-navbar-con { position: relative; width: 100%; background-color: white; z-index: 9999; } .custom-navbar-con .custom-navbar-statusbar-con { width: 100%; } .custom-navbar-con .custom-navbar-content { width: 100%; } .custom-navbar-con .custom-navbar-left-menu-con { position: absolute; } .custom-navbar-con .custom-navbar-left-menu-con .custom-navbar-icon-btn { height: 100%; border-radius: 200px; border: 1px solid rgba(220, 220, 220, 0.6); } .custom-navbar-con .custom-navbar-left-menu-con .custom-navbar-icon-btn .icon { height: 90%; margin-top: 2.5%; } .custom-navbar-con .custom-navbar-left-menu-con .custom-navbar-icon-btn .text { font-size: 27rpx; } .custom-navbar-con .custom-navbar-left-menu-con .custom-navbar-icon-btn.back { border: none; } .custom-navbar-con .custom-navbar-left-menu-con .custom-navbar-icon-btn.back~.custom-navbar-icon-btn.home { margin-left: 10rpx; } .custom-navbar-con .custom-navbar-left-menu-con .custom-navbar-icon-btn.switch-shop { padding-left: 5px; padding-right: 25rpx; } .custom-navbar-con.ios .custom-navbar-title.android { display: none; } .custom-navbar-con.android .custom-navbar-title.ios { display: none; } .custom-navbar-con .custom-navbar-title.ios { font-weight: bold; text-align: center; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); -webkit-transform: translate(-50%, -50%); } .custom-navbar-con .custom-navbar-title.android { padding-left: 30rpx; }```
CustomNavBar.js
```javascript module.exports = function(PageInstance) { let App = getApp() let _tplData = { _CustomNavBar_: { navRightMenuRect: App.NavRightMenuRect, navRightMenuCenterY: App.NavRightMenuCenterY, statusBarHeight: App.StatusBarHeight, winWidth: App.WinWidth, winHeight: App.WinHeight, iOS: App.iOS, navTitle: '', // 當前只合適短標題,如需長標題,建議隱藏自定義導航欄,自定義展示 navHeight: App.CustomNavHeight, needFixed: false, showNavBar: !App.NavRightMenuRect ? false : true, showLeftMenu: true, showBackBtn: true, showHomeBtn: false } } let _tplMethods = { customNavBarBack() { wx.navigateBack() }, customNavBarBackToHome() { let url = '/pages/index/index' wx.reLaunch({ url: url }) } } let isIndexPage = !!(PageInstance.route == 'pages/index/index') let pages = getCurrentPages() if (pages.length == 1) { _tplData._CustomNavBar_.showBackBtn = false _tplData._CustomNavBar_.showHomeBtn = !isIndexPage } // 每個頁面 可單獨配置自定義導航欄 if (PageInstance.data.CustomNavBarConfig) { Object.assign(_tplData._CustomNavBar_, PageInstance.data.CustomNavBarConfig) } // !!!! 最后執行 // 當無法獲取到右上角按鈕膠囊的布局位置時,強制設置自定義導航欄為隱藏狀態 if (!App.NavRightMenuRect) { _tplData._CustomNavBar_.showNavBar = false } Object.assign(PageInstance, _tplMethods) PageInstance.setData(_tplData) return this }
app.js的配置
// 自定義導航欄 import CustomNavBar from './template/CustomNavBar/CustomNavBar'; App({ //自定義 模板式 組件 CustomNavBar, // 系統信息 WinWidth: 0, WinHeight: 0, StatusBarHeight: 0, PixelRatio: 1, SystemFullName: '', SystemVersion: '', SystemSDKVersion: '', //自定義導航欄相關 NavRightMenuRect: null, NavRightMenuCenterY: 0, CustomNavHeight: 0, onLaunch: function (options) { let self = this let systemInfo = wx.getSystemInfoSync() self.iOS = systemInfo.platform === 'ios' self.isDebug = systemInfo.platform === 'devtools' if (self.isDebug) { // 單純為了在開發工具下調試 自定義導航欄 // 開發工具下不存在App版本號的區分 systemInfo.version = '7.0.0' } self.WinWidth = systemInfo.windowWidth self.WinHeight = systemInfo.windowHeight self.StatusBarHeight = systemInfo.statusBarHeight // 部分小程序庫版本沒有返回狀態欄高度 if (!self.StatusBarHeight) { self.StatusBarHeight = 20 } self.PixelRatio = Math.max(systemInfo.pixelRatio, 2) self.SystemFullName = systemInfo.system self.SystemVersion = systemInfo.version self.SystemSDKVersion = systemInfo.SDKVersion // app.json全局配置的自定義導航欄的話,客戶端需求版本為6.6.0 // 每個頁面 單獨配置的自定義導航欄的話,客戶端需求版本為7.0.0 // wx.getMenuButtonBoundingClientRect方法,要求基礎庫版本為2.1.0 if (self.compareVersion(self.SystemVersion, '6.6.0') >= 0) { // 官方的6.6.0版本以上客戶端,最低基礎庫版本為1.9.4 // 6.6.0以上且[1.9.4 - 2.1.0]范圍內的機型無法使用wx.getMenuButtonBoundingClientRect // 所以手動寫死非全面屏手機的適配膠囊布局位置 self.NavRightMenuRect = { top: 26, bottom: 58, right: self.WinWidth - 10, width: 87, height: 32 } // 如果系統信息返回的狀態欄高度大于20,認為是全面屏手機 if (self.StatusBarHeight > 20) { self.NavRightMenuRect.top = 50 self.NavRightMenuRect.bottom = 82 } // 2019年08月21日22:09:22 // 微信小程序庫出現bug,導致部分機型wx.getMenuButtonBoundingClientRect無返回值 // 所以在這之前先默認寫死一個NavRightMenuRect,防止全局的自定義導航欄已經隱藏了但是無法顯示自定義導航欄 // 詳見https://developers.weixin.qq.com/community/develop/doc/00062238d78e880aedd88b72351c00 if (wx.getMenuButtonBoundingClientRect) { let NavRightMenuRect = wx.getMenuButtonBoundingClientRect() self.NavRightMenuRect = { top: NavRightMenuRect.top, bottom: NavRightMenuRect.bottom, right: NavRightMenuRect.right, width: NavRightMenuRect.width, height: NavRightMenuRect.height } } self.NavRightMenuCenterY = self.NavRightMenuRect.top + self.NavRightMenuRect.height / 2 self.CustomNavHeight = self.NavRightMenuRect.bottom + (self.NavRightMenuRect.top - self.StatusBarHeight) } else { self.NavRightMenuRect = null self.CustomNavHeight = 0 } }, // 比較兩個版本號 compareVersion (v1, v2) => { v1 = v1.split('.') v2 = v2.split('.') const len = Math.max(v1.length, v2.length) while (v1.length < len) { v1.push('0') } while (v2.length < len) { v2.push('0') } for (let i = 0; i < len; i++) { const num1 = parseInt(v1[i]) const num2 = parseInt(v2[i]) if (num1 > num2) { return 1 } else if (num1 < num2) { return -1 } } return 0 } }),
假如在index 頁面引用
index.wxml
<!-- 自定義NavBar --> <import src="../../template/CustomNavBar/CustomNavBar.wxml" /> <template is="CustomNavBar" data="{{ ..._CustomNavBar_ }}"></template>
index.js
onLoad: function(options) { new App.CustomNavBar(this) }
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