开始前，请先完成项目创建，详见

【微信小程序-原生开发】实用教程01-注册登录账号，获取 AppID、下载安装开发工具、创建项目、上传体验

前期准备

因我们的项目是根据模板创建的，需先清理掉无效的页面代码，具体操作方式如下：

1. 删除 pages 文件夹下的所有文件
2. 用下方代码替换掉 app.json 文件中的内容后保存（此时微信开发者工具会在pages中自动生成相关的页面代码）

{
  "pages": [
    "pages/index/index",
    "pages/member/index",
    "pages/bible/index",
    "pages/me/index"
  ],
  "tabBar": {
    "list": [{
      "pagePath": "pages/index/index",
      "text": "首页"
    },
     {
      "pagePath": "pages/member/index",
      "text": "家庭成员"
    },
    {
      "pagePath": "pages/bible/index",
      "text": "圆梦宝典"
    },
    {
      "pagePath": "pages/me/index",
      "text": "我的世界"
    }
  ]
  },
  "usingComponents": {
    "t-avatar": "tdesign-miniprogram/avatar/avatar",
    "t-avatar-group": "tdesign-miniprogram/avatar/avatar-group",
    "t-badge": "tdesign-miniprogram/badge/badge",
    "t-button": "tdesign-miniprogram/button/button",
    "t-cell": "tdesign-miniprogram/cell/cell",
    "t-cell-group": "tdesign-miniprogram/cell-group/cell-group",
    "t-collapse": "tdesign-miniprogram/collapse/collapse",
    "t-collapse-panel": "tdesign-miniprogram/collapse/collapse-panel",
    "t-dialog": "tdesign-miniprogram/dialog/dialog",
    "t-tabs": "tdesign-miniprogram/tabs/tabs",
    "t-tab-panel": "tdesign-miniprogram/tabs/tab-panel",
    "t-loading": "tdesign-miniprogram/loading/loading",
    "t-button-group": "tdesign-miniprogram/button-group/button-group",
    "t-icon": "tdesign-miniprogram/icon/icon",
    "t-rate": "tdesign-miniprogram/rate/rate",
    "t-progress": "tdesign-miniprogram/progress/progress",
    "t-input": "tdesign-miniprogram/input/input",
    "t-textarea": "tdesign-miniprogram/textarea/textarea",
    "t-message": "tdesign-miniprogram/message/message",
    "t-toast": "tdesign-miniprogram/toast/toast",
    "t-stepper": "tdesign-miniprogram/stepper/stepper",
    "t-slider": "tdesign-miniprogram/slider/slider",
    "t-radio": "tdesign-miniprogram/radio/radio",
    "t-radio-group": "tdesign-miniprogram/radio-group/radio-group",
    "t-checkbox": "tdesign-miniprogram/checkbox/checkbox",
    "t-checkbox-group": "tdesign-miniprogram/checkbox-group/checkbox-group",
    "t-swipe-cell": "tdesign-miniprogram/swipe-cell/swipe-cell",
    "t-swiper": "tdesign-miniprogram/swiper/swiper",
    "t-swiper-item": "tdesign-miniprogram/swiper/swiper-item",
    "t-swiper-nav": "tdesign-miniprogram/swiper/swiper-nav",
    "t-sticky": "tdesign-miniprogram/sticky/sticky",
    "t-fab": "tdesign-miniprogram/fab/fab",
    "t-tab-bar": "tdesign-miniprogram/tab-bar/tab-bar",
    "t-tab-bar-item": "tdesign-miniprogram/tab-bar/tab-bar-item",
    "t-transition": "tdesign-miniprogram/transition/transition",
    "t-indexes": "tdesign-miniprogram/indexes/indexes",
    "t-dropdown-menu": "tdesign-miniprogram/dropdown-menu/dropdown-menu",
    "t-dropdown-item": "tdesign-miniprogram/dropdown-menu/dropdown-item",
    "t-drawer": "tdesign-miniprogram/drawer/drawer",
    "t-pull-down-refresh": "tdesign-miniprogram/pull-down-refresh/pull-down-refresh",
    "t-footer": "tdesign-miniprogram/footer/footer",
    "t-divider": "tdesign-miniprogram/divider/divider",
    "t-empty": "tdesign-miniprogram/empty/empty",
    "t-back-top": "tdesign-miniprogram/back-top/back-top",
    "t-grid-item": "tdesign-miniprogram/grid/grid-item",
    "t-grid": "tdesign-miniprogram/grid/grid",
    "t-count-down": "tdesign-miniprogram/count-down/count-down",
    "t-image": "tdesign-miniprogram/image/image",
    "t-search": "tdesign-miniprogram/search/search",
    "t-navbar": "tdesign-miniprogram/navbar/navbar",
    "t-date-time-picker": "tdesign-miniprogram/date-time-picker/date-time-picker",
    "t-action-sheet": "tdesign-miniprogram/action-sheet/action-sheet",
    "t-image-viewer": "tdesign-miniprogram/image-viewer/image-viewer"
  },
  "window": {
    "//":"导航栏标题文字",
    "navigationBarTitleText": "DOS圆梦大家庭",
    "//":"导航栏背景颜色，需用十六进制值，推荐使用在线色取色器 http://rgbcolor.bchrt.com/",
    "navigationBarBackgroundColor": "#027CBE",
    "//":"导航栏标题颜色，仅支持 black / white",
    "navigationBarTextStyle": "white",
    "//":"下拉 loading 的样式，仅支持 dark / light",
    "backgroundTextStyle": "light"
  },
  "sitemapLocation": "sitemap.json"
}

此时小程序的页面效果如下：

pages 文件夹中自动生成以下文件

至此，我们已经完成了全局页面的配置、页面的添加和底部导航的开发，下面具体讲讲其实现过程。

全局页面配置

主要用于修改小程序顶部标题，背景色和文字颜色，见图

实现方式是修改 app.json 中的 window 配置，详见代码中是注释

  "window": {
    "//":"导航栏标题文字",
    "navigationBarTitleText": "DOS圆梦大家庭",
    "//":"导航栏背景颜色，需用十六进制值，推荐使用在线色取色器 http://rgbcolor.bchrt.com/",
    "navigationBarBackgroundColor": "#027CBE",
    "//":"导航栏标题颜色，仅支持 black / white",
    "navigationBarTextStyle": "white",
    "//":"下拉 loading 的样式，仅支持 dark / light",
    "backgroundTextStyle": "light"
  },

更多配置项见（其他配置通常用不上，需要时再查询即可）

https://developers.weixin.qq.com/miniprogram/dev/reference/configuration/app.html#window

添加页面

小程序的每个页面，都对应 pages 文件夹中的一个文件夹，如首页则对应 pages 文件夹中的 index 文件夹。

每个页面至少由四种文件共同渲染得到，以首页为例：

• pages\index\index.js
  首页的逻辑
• pages\index\index.json
  首页的配置
• pages\index\index.wxml
  首页的元素
• pages\index\index.wxss
  首页的样式

但这些文件，通常无需自己手动创建，因为在 app.json 中的 pages 配置添加新的页面路径，微信开发者工具就会自动帮你创建上述的四种文件，以首页为例：

app.json

  "pages": [
    "pages/index/index"
  ],

保存后，pages文件夹下会自动生成相应的页面文件

底部导航

即固定在小程序底部用于切换页面的一行类似菜单功能的按钮，见图

实现方法也很简单，在 app.json 文件中添加 tabBar 配置即可

  "tabBar": {
    "list": [
      {
        "pagePath": "pages/index/index",
        "text": "首页"
      },
      {
        "pagePath": "pages/member/index",
        "text": "家庭成员"
      },
      {
        "pagePath": "pages/bible/index",
        "text": "圆梦宝典"
      },
      {
        "pagePath": "pages/me/index",
        "text": "我的世界"
      }
    ]
  },

• pagePath 为页面路径，与 pages 中的配置对应，如首页为 pages/index/index
• text 为底部导航显示的文字