微信小程序 开发之全局设置的介绍

一.app.json

使用app.json文件来对微信小程序进行全局配置，决定页面文件的路径、窗口表现、设置网络超时时间、设置多 tab 等.

注意在.json不能注释，否则会出错。

二.工具栏tabBar

如果我们的小程序是一个多 tab 应用（客户端窗口的底部或顶部有 tab 栏可以切换页面），那么我们可以通过 tabBar 配置项指定 tab 栏的表现，以及 tab 切换时显示的对应页面。

tabBar 是一个数组，只能配置最少2个、最多5个 tab，tab 按数组的顺序排序

app.json中

{ 
 "pages": ["pages/index/index", 
    "pages/coming/coming", 
    "pages/search/search", 
    "pages/top/top" 
   ], 
 "window": { 
  "navigationBarBackgroundColor": "#47a86c", 
  "navigationBarTextStyle": "white", 
  "navigationBarTitleText": "小程序案例", 
  "backgroundColor": "#fff", 
  "backgroundTextStyle": "dark" 
 }, 
 "tabBar": { 
  "color": "#686868", 
  "selectedColor": "#47a86c", 
  "backgroundColor": "#fff", 
  "list": [{ 
   "pagePath": "pages/index/index", 
   "iconPath": "dist/images/popular_icon.png", 
   "selectedIconPath": "dist/images/popular_active_icon.png", 
   "text": "热映" 
  }, 
  { 
   "pagePath": "pages/coming/coming", 
   "iconPath": "dist/images/coming_icon.png", 
   "selectedIconPath": "dist/images/coming_active_icon.png", 
   "text": "待映" 
  }, 
  { 
   "pagePath": "pages/search/search", 
   "iconPath": "dist/images/search_icon.png", 
   "selectedIconPath": "dist/images/search_active_icon.png", 
   "text": "搜索" 
  }, 
  { 
   "pagePath": "pages/top/top", 
   "iconPath": "dist/images/top_icon.png", 
   "selectedIconPath": "dist/images/top_active_icon.png", 
   "text": "口碑" 
  }] 
 }, 
 "networkTimeout": { 
  "request": 10000, 
  "downloadFile": 10000 
 }, 
 "debug": true 
}