微信小程序如何根据不同用户切换不同TabBar(简单易懂!)
现有需求:
小程序用户有三种身份(公众、运维人员、领导),根据不同用户身份显示不同的tabbar
众所周知微信小程序全局文件app.json里面的"tabBar"里面的list只能放置2-5个,要想实现3个tabbar,必须得复用tabbar,三种身份都需要个人中心,剩下的是长列表(两个),表单,图表 刚好是5个,废话少说,上代码
代码有点长,建议仔细看一下
1全局.app.json
tabbar里面的sustom要设置为true
"custom": true,
{ "pages": [ xxxxxx:xxxxxx ], "window": { xxxxxxxxx }, "tabBar": { "custom": true, "color": "#7A7E83", "selectedColor": "#d81e06", "borderStyle": "black", "backgroundColor": "#ffffff", "list": [ { "pagePath": "pages/Users/myrepaire/myrepaire", "text": "我要报修", "iconPath": "/images/tabbar/weixiu1.png", "selectedIconPath": "/images/tabbar/weixiu2.png" }, { "pagePath": "pages/Users/myMalfunction/myMalfunction", "text": "我的故障", "iconPath": "/images/tabbar/myweixiu1.png", "selectedIconPath": "/images/tabbar/myweixiu2.png" }, { "pagePath": "pages/logs/logs", "text": "个人中心", "iconPath": "/images/tabbar/user1.png", "selectedIconPath": "/images/tabbar/user2.png" }, { "pagePath": "pages/weixiu/myweixiu/myweixiu", "text": "我的维修", "iconPath": "/images/tabbar/myweixiu1.png", "selectedIconPath": "/images/tabbar/myweixiu1.png" }, { "pagePath": "pages/charts/charts", "text": "故障报表", "iconPath": "/images/tabbar/chart1.png", "selectedIconPath": "/images/tabbar/chart2.png" } ] }, "sitemapLocation": "sitemap.json" }
可以看到全局app.json里面放了5个不同的tabbar路径
2.自定义custom-tab-bar
index.js
Component({ data: { selected: 0, color: "#000000", roleId: '', selectedColor: "#1396DB", allList: [{ list1: [{ pagePath: "/pages/Users/myrepaire/myrepaire", iconPath: "/images/tabbar/weixiu1.png", selectedIconPath: "/images/tabbar/weixiu2.png", text: "我要报修" }, { pagePath: "/pages/Users/myMalfunction/myMalfunction", iconPath: "/images/tabbar/myweixiu1.png", selectedIconPath: "/images/tabbar/myweixiu2.png", text: "我的故障" }, { pagePath: "/pages/logs/logs", text: "个人中心", iconPath: "/images/tabbar/user1.png", selectedIconPath: "/images/tabbar/user2.png" }], list2: [{ pagePath: "/pages/weixiu/myweixiu/myweixiu", iconPath: "/images/tabbar/weixiu1.png", selectedIconPath: "/images/tabbar/weixiu2.png", text: "我要维修" }, { pagePath: "/pages/Users/myMalfunction/myMalfunction", iconPath: "/images/tabbar/myweixiu1.png", selectedIconPath: "/images/tabbar/myweixiu2.png", text: "我的维修" }, { pagePath: "/pages/logs/logs", text: "个人中心", iconPath: "/images/tabbar/user1.png", selectedIconPath: "/images/tabbar/user2.png" }], list3: [{ pagePath: "/pages/Users/myrepaire/myrepaire", iconPath: "/images/tabbar/weixiu1.png", selectedIconPath: "/images/tabbar/weixiu2.png", text: "我要报修" }, { pagePath: "/pages/charts/charts", iconPath: "/images/tabbar/chart1.png", selectedIconPath: "/images/tabbar/chart2.png", text: "故障报表" }, { pagePath: "/pages/logs/logs", text: "个人中心", iconPath: "/images/tabbar/user1.png", selectedIconPath: "/images/tabbar/user2.png" }] }], list: [] }, attached() { const roleId = wx.getStorageSync('statu') if (roleId == 20) { this.setData({ list: this.data.allList[0].list1 }) }else if(roleId==5){ this.setData({ list: this.data.allList[0].list3 }) }else if(roleId==102){ this.setData({ list: this.data.allList[0].list2 }) } }, methods: { switchTab(e) { const data = e.currentTarget.dataset const url = data.path wx.switchTab({ url }) this.setData({ selected: data.index }) } }, })
分析:
- 首先,小程序tabbar只识别list里面的东西
- 先在data中定义一个list和allList数组,把三重身份用户的list分别定义为list1,list2,list3,放入allList
const roleId = wx.getStorageSync('statu')
获取用户信息存到缓存中,根据不同和的roleId来判断是什么身份,this.setData({ list: this.data.allList[0].list2 })
根据身份把allList里面的子数组赋值给系统默认识别的`list``- switchTab的作用根据不同的路径切换tabbar下标
switchTab(e) { const data = e.currentTarget.dataset const url = data.path wx.switchTab({ url }) this.setData({ selected: data.index }) }
index.json
{ "usingComponents": {} }
index.wxml
<cover-view class="tab-bar"> <cover-view class="tab-bar-border"></cover-view> <cover-view wx:for="{{list}}" wx:key="index" class="tab-bar-item" data-path="{{item.pagePath}}" data-index="{{index}}" bindtap="switchTab"> <cover-image class="cover-image" src="{{selected === index ? item.selectedIconPath : item.iconPath}}"></cover-image> <cover-view class="cover-view" style="color: {{selected === index ? selectedColor : color}}">{{item.text}}</cover-view> </cover-view> </cover-view>
index.wxss
.tab-bar { position: fixed; bottom: 0; left: 0; right: 0; height: 48px; background: white; display: flex; padding-bottom: env(safe-area-inset-bottom); } .tab-bar-border { background-color: rgba(0, 0, 0, 0.33); position: absolute; left: 0; top: 0; width: 100%; height: 1px; transform: scaleY(0.5); } .tab-bar-item { flex: 1; text-align: center; display: flex; justify-content: center; align-items: center; flex-direction: column; } .tab-bar-item .cover-image { width: 44rpx; height: 44rpx; } .tab-bar-item .cover-view { margin-top: 8rpx; font-size: 24rpx; }
最后,在tabbar里面设置过 pagePath的路径文件下的 xxx.js的onshow:function(){}里面设置
或者说凡是用到tabbar组件的页面对应的xx.js里的onshow:function(){}都要按照以下进行设置
不然会出现tabbar显示与点击不同步的现象
/** * 生命周期函数--监听页面显示 */ onShow: function () { if (typeof this.getTabBar === 'function' && this.getTabBar()) { this.getTabBar().setData({ selected: 0 }) } }, //selected: 0就是选中的tabbar下标,根据不同页面显示不同tabbar下标
结果展示
1.普通用户
2.运维人员
3.领导
可以看到根据用户信息里的roleId成功的切换了不同的tabbar
总结
到此这篇关于微信小程序如何根据不同用户切换不同TabBar的文章就介绍到这了,更多相关小程序用户切换不同TabBar内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!
相关文章
isArray()函数(JavaScript中对象类型判断的几种方法)
我们知道,JavaScript中检测对象类型的运算符有:typeof、instanceof,还有对象的constructor属性2009-11-11JavaScript中判断为整数的多种方式及保留两位小数的方法
这篇文章主要介绍了JavaScript中判断为整数的多种方式,以及保留两位小数的方法,本文通过实例代码给大家介绍的非常详细,具有一定的参考借鉴价值,需要的朋友可以参考下2019-09-09
最新评论