这是博主的项目包含的文件截图： 

首先如图建立文件夹和page页面

然后app.json页面更新代码如下：

{
  "pages": [
    "pages/hotPage/hotPage",
    "pages/comingSoon/comingSoon",
    "pages/search/search",
    "pages/more/more"
  ],
  "window": {
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "WeChat",
    "navigationBarTextStyle": "black"
  },
  "tabBar": {
    "list": [{
      "pagePath": "pages/hotPage/hotPage",
      "text": "本地热映"
    },{
      "pagePath": "pages/comingSoon/comingSoon",
      "text": "即将上映"
    },{
      "pagePath": "pages/search/search",
      "text": "影片搜索"
    }]
  }
}

然后是app.wxss页面（为后面的页面样式写的）：