微信小程序-【仿咸鱼】的底部导航

效果：

 

说明：需要隐藏小程序自带的tabBar

下载地址：https://github.com/SuRuiGit/wxapp-customTabbar

使用步骤：

第一步：找到项目中的tabbarComponent目录，拷贝到你的工程中，然后将tabbarComponent->icon图标替换成你自己的tabbar图片，或者我们正常图片都是放在images目录下，这里我就是放在images下

第二步：到app.json中配置tabBar，只强调闲鱼的tabbar中间的按钮是跳到二级页面，所以不配置在tabBar的list中。如图所示，就是首页、名片、管理、我的配置在app.json中。

"tabBar": {
    "backgroundColor": "#ffffff",
    "color": "#979795",
    "selectedColor": "#1c1c1b",
    "list": [
      {
        "pagePath": "pages/index/index",
        "iconPath": "images/icon/home.png",
        "selectedIconPath": "images/icon/homeselect.png",
        "text": "首页"
      },
      {
        "pagePath": "pages/menu/menu",
        "text": "名片",
        "iconPath": "images/icon/menu.png",
        "selectedIconPath": "images/icon/menuselect.png"
      },
      {
        "pagePath": "pages/manager/manager",
        "text": "管理",
        "iconPath": "images/icon/message.png",
        "selectedIconPath": "images/icon/messageselect.png"
      },
      {
        "pagePath": "pages/person/person",
        "iconPath": "images/icon/my.png",
        "selectedIconPath": "images/icon/myselect.png",
        "text": "我的"
      }
    ]
  }

第三步：在app.js的onLaunch方法中调用wx.hideTabBar();隐藏系统自带的tabBar

第四步：在app.js中的globalData中加入自定义tabbar的参数，再加入一个方法给tabBar.list配置中的页面使用，代码如下：

 globalData: {
    userInfo: null,
    tabBar: {
      "backgroundColor": "#ffffff",
      "color": "#979795",
      "selectedColor": "#1c1c1b",
      "list": [
        {
          "pagePath": "/pages/index/index",
          "text": "首页",
          "iconPath": "/images/icon/home.png",
          "selectedIconPath": "/images/icon/homeselect.png"
        },
        {
          "pagePath": "/pages/menu/menu",
          "text": "名片",
          "iconPath": "/images/icon/menu.png",
          "selectedIconPath": "/images/icon/menuselect.png"
        },
        {
          "pagePath": "/pages/release/release",
          "iconPath": "/images/icon/icon_release.png",
          "isSpecial": true,
          "text": "发布"
        },
        {
          "pagePath": "/pages/manager/manager",
          "text": "管理",
          "iconPath": "/images/icon/message.png",
          "selectedIconPath": "/images/icon/messageselect.png"
        },
        {
          "pagePath": "/pages/person/person",
          "text": "我的",
          "iconPath": "/images/icon/my.png",
          "selectedIconPath": "/images/icon/myselect.png"
        }
      ]
    }
  },

  editTabbar: function () {
     //隐藏系统tabbar
    wx.hideTabBar()
    let tabbar = this.globalData.tabBar;
    let currentPages = getCurrentPages();
    let _this = currentPages[currentPages.length - 1];
    let pagePath = _this.route;
    (pagePath.indexOf('/') != 0) && (pagePath = '/' + pagePath);
    for (let i in tabbar.list) {
      tabbar.list[i].selected = false;
      (tabbar.list[i].pagePath == pagePath) && (tabbar.list[i].selected = true);
    }
    _this.setData({
      tabbar: tabbar
    });
  },

第五步：

在‘首页’、‘名片’、‘管理’、‘我的’页面的.json文件中分别加入 "usingComponents": { "tabbar": "../../tabbarComponent/tabbar" }

在.wxml文件中加入 ，

在.js中data中加入tabbar:{}并onload方法中调用app.editTabbar();