今天打算開始實戰一個(gè)微信小程序項目，一開始就(jiù)踩坑了(le／liǎo)，正确設置了(le／liǎo)TabBar，但是(shì)TabBar就(jiù)是(shì)不(bù)能顯示出(chū)來(lái)，後面才找到(dào)原因，這(zhè)裏記錄下：

app.json正确代碼：

{
  "pages":[
    "pages/index/index", 
    "pages/leader/leader",    
    "pages/leader/stories/stories", 
    "pages/leader/authors/authors", 
    "pages/stack/stack",
    "pages/stack/booklist/booklist", 
    "pages/stack/booklist/bookdetail/bookdetail",
    "pages/bookdesk/bookdesk", 
    "pages/mine/mine",
    "pages/mine/news/news",    
    "pages/logs/logs" 
  ],
  "window":{
    "backgroundTextStyle":"light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "網易蝸牛讀書",
    "navigationBarTextStyle":"black"
  },
  "tabBar":{
    "color":"#999999",
    "selectedColor":"#444444",
    "backgroungColor":"#ffffff",
    "borderStyle":"#e0e0e0",
    "list": [
      {
        "pagePath":"pages/leader/leader",
        "iconPath": "assets/icons/lingdu.png",
        "selectedIconPath": "assets/icons/lingdu_sel.png",
        "text":"領讀"
      },
      {
        "pagePath":"pages/stack/stack",
        "iconPath": "assets/icons/stack.png",
        "selectedIconPath": "assets/icons/stack_sel.png",
        "text":"分類"
      },
      {
        "pagePath": "pages/bookdesk/bookdesk",
        "iconPath": "assets/icons/bookdesk.png",
        "selectedIconPath": "assets/icons/bookdesk_sel.png",
        "text":"書桌"
      },
      {
        "pagePath":"pages/mine/mine",
        "iconPath": "assets/icons/mine.png",
        "selectedIconPath": "assets/icons/mine_sel.png",
        "text":"我的(de)"
      }
    ]
  }
}

這(zhè)裏注意顯示解決有兩種方式：

1.pages裏的(de)首個(gè)頁面必須在(zài)list數組裏有配置，所以(yǐ)在(zài)lists數組裏加一個(gè)字典對象即可。

{
        "pagePath":"pages/index/index",
        "iconPath": "assets/icons/index.png",
        "selectedIconPath": "assets/icons/index_sel.png",
        "text":"首頁"
 }

但是(shì)我的(de)TabBar又不(bù)想有這(zhè)個(gè)item顯示，這(zhè)裏看第二種解決辦法。

2.pages數組的(de)第一項必須是(shì)tabBar的(de)list數組的(de)一員：

這(zhè)裏有個(gè)疑惑：

百度了(le／liǎo)解決方法，顯示将list數組加了(le／liǎo)index的(de)模塊item，後面不(bù)想要(yào / yāo)index模塊在(zài)TabBar顯示，然後又删除再運行，問題就(jiù)解決了(le／liǎo)，也(yě)沒有設置pages數組的(de)第一項必須是(shì)tabBar的(de)list數組的(de)一員。

解決了(le／liǎo)就(jiù)好，知道(dào)的(de)大(dà)神可以(yǐ)留言告訴我喲！