一、全局配置
在app.json里面配置 pages、usingComponents 和 tabBar
"pages": [
"pages/page1/index",
"pages/page2/index",
"pages/page3/index",
"pages/page4/index",
"pages/page5/index"
],
"usingComponents": {
"um-tabbar": "/components/um-tabbar/index"
},
"tabBar": {
"borderStyle": "white",
"list": [
{ "pagePath": "pages/page1/index" },
{ "pagePath": "pages/page2/index" },
{ "pagePath": "pages/page4/index" },
{ "pagePath": "pages/page5/index" }
]
}
注:
a、此處 tabBar 下的 list 必須配置跳轉頁面的路徑,否則自定義組件里面的 wx.switchTab 方法將不能調用
b、全局 usingComponents 沒有配置時,需要在引用頁面的json文件下配置 usingComponents
二、自定義組價
components/um-tabbar目錄下
1、icons(該目錄存放你的圖標資源,也可放在項目的assets目錄下)
2、index.wxml
<view class='box-tabbar' style='height:{{tabHeight}}rpx;'> <view wx:for="{{tabs}}" wx:key="{{item.content}}" class='item' bindtap='handleClick' data-index='{{index}}'> <image src='{{(activeIndex==index)?item.activeImg:item.inactiveImg}}' wx:if="{{item.activeImg}}"></image> <view wx:if="{{item.content}}" style="color:{{(activeIndex==index)?tabStyle.activeColor:tabStyle.inactiveColor}};"> {{item.content}} </view> </view> <!-- 特殊圖標 --> <image src='./icons/tab3.png' class='icon-tab3' bindtap='handleClickMid'></image> </view>
3、index.wcss(樣式可自行定義,這里不做補充)
4、index.js
const config = require('./config.js') const app = getApp() Component({ properties: { activeIndex: { type: Number, value: 1, }, }, // ios下會有問題,隱藏兩遍原有tabbar created () { wx.hideTabBar({ aniamtion: false, fail () { setTimeout(function () { wx.hideTabBar({ aniamtion: false }) }, 500) } }) }, ready () { const _this = this // iPhone X 適配tabbar高度 wx.getSystemInfo({ success (res) { const model = res.model if (model.search('iPhone X') != -1 ||
model.search('iPhone 11') != -1 ||
model.search('unknown<iPhone12,1>') != -1)
{ _this.setData({ tabHeight: 150 }) } } }) wx.hideTabBar({ aniamtion: false, fail () { setTimeout(function () { wx.hideTabBar({ aniamtion: false }) }, 500) } }) }, data: config, methods: { handleClick (e) { const idx = e.currentTarget.dataset.index if (idx == this.data.activeIndex) return; const url = this.data.tabs[idx].url wx.switchTab({ url }) } } })
注:
a、調用 wx.hideTabBar 方法將定義過的 tabBar 隱藏
b、考慮 iphoneX 適配:調用 wx.getSystemInfo 方法獲取設備信息,根據手機型號 model字段判斷機型,進而設置 tabbar 的高度

5、index.json
{
"component": true
}
6、config.js
module.exports = {
tabHeight: 100,
tabStyle: {
activeColor: '#333',
inactiveColor: '#ccc',
},
tabs: [
{
"content": "tab1",
"activeImg": "./icons/tab1-on.png",
"inactiveImg": "./icons/tab1-off.png",
"url": "/pages/page1/index"
},
{
"content": "tab2",
"activeImg": "./icons/tab2-on.png",
"inactiveImg": "./icons/tab2-off.png",
"url": "/pages/page2/index"
},
{
"content": "tab3",
"activeImg": "./icons/tab3.png",
"inactiveImg": "./icons/tab3.png",
"url": "/pages/page3/index"
},
{
"content": "tab4",
"activeImg": "./icons/tab4-on.png",
"inactiveImg": "./icons/tab4-off.png",
"url": "/pages/page4/index"
},
{
"content": "tab5",
"activeImg": "./icons/tab5-on.png",
"inactiveImg": "./icons/tab5-off.png",
"url": "/pages/page5/index"
},
],
}
三、頁面引入組件
分別在 tab1、tab2、tab4 和 tab5 的wxml頁面底部引入組件
<um-tabbar active-index="0"></um-tabbar>
