微信小程序tabBar模板用法实例分析【附demo源码下载】
本文实例讲述了微信小程序tabBar模板用法。分享给大家供大家参考,具体如下:
众所周知,微信小程序的tabBar都是新开页面的,而微信文档上又表明了最多只能打开5层页面。这样就很容易导致出问题啦,假如我的tabBar有5个呢?下面是微信原话:
一个应用同时只能打开5个页面,当已经打开了5个页面之后,wx.navigateTo
不能正常打开新页面。请避免多层级的交互方式,或者使用wx.redirectTo
因此这几天想着根据微信tabBar数组来自定义模板供页面调用。不过我在list里面每个对象都增加了一个selectedColor和active属性,方便对每个tabBar当前页做样式,如果不传直接使用设置的selectedColor。因此这串数据只能设定在各个页面下,不能设定在公用的app.js配置文件下,稍微有点代码冗余,下次研究下怎么直接配置到app.js完善下。
只要新建一个tarBar.wxml模板页,然后引用模板的页面传入数据即可,代码如下:
<template name="tabBar"> <view class="flex-h flex-hsb tab-bar" style="color: {{tabBar.color}}; background: {{tarBar.backgroundColor}}; {{tabBar.position=='top'? 'top: 0' : 'bottom: 0'}}; {{tabBar.borderStyle? (tabBar.position=='top'? 'border-bottom: solid 1px '+tabBar.borderStyle + ';' : 'border-top: solid 1px '+tabBar.borderStyle + ';') : ''}}"> <block wx:for="{{tabBar.list}}" wx:key="pagePath"> <navigator url="{{item.pagePath}}" open-type="redirect" class="menu-item" style="{{item.active? 'color: '+(item.selectedColor? item.selectedColor : tabBar.selectedColor) : ''}}"> <image src="{{item.selectedIconPath}}" wx:if="{{item.active}}"></image> <image src="{{item.iconPath}}" wx:if="{{!item.active}}"></image> <text>{{item.text}}</text> </navigator> </block> </view> </template>
接下来进行测试,首先是index.js的配置对象:
//配置tabBar tabBar: { "color": "#9E9E9E", "selectedColor": "#f00", "backgroundColor": "#fff", "borderStyle": "#ccc", "list": [ { "pagePath": "/pages/index/index", "text": "主页", "iconPath": "../../img/tabBar_home.png", "selectedIconPath": "../../img/tabBar_home_cur.png", //"selectedColor": "#4EDF80", active: true }, { "pagePath": "/pages/village/city/city", "text": "目的地", "iconPath": "../../img/tabBar_village.png", "selectedIconPath": "../../img/tabBar_village_cur.png", "selectedColor": "#4EDF80", active: false }, { "pagePath": "/pages/mine/mine", "text": "我的", "iconPath": "../../img/tabBar_mine.png", "selectedIconPath": "../../img/tabBar_mine_cur.png", "selectedColor": "#4EDF80", active: false } ], "position": "bottom" }
index.wxml引入模板:
<import src="../../template/tabBar.wxml" /> <template is="tabBar" data="{{tabBar: tabBar}}" />
接下来是mine.js文件引入配置对象:
//配置tabBar tabBar: { "color": "#9E9E9E", "selectedColor": "#f00", "backgroundColor": "#fff", "borderStyle": "#ccc", "list": [ { "pagePath": "/pages/index/index", "text": "主页", "iconPath": "../../img/tabBar_home.png", "selectedIconPath": "../../img/tabBar_home_cur.png", //"selectedColor": "#4EDF80", active: false }, { "pagePath": "/pages/village/city/city", "text": "目的地", "iconPath": "../../../img/tabBar_village.png", "selectedIconPath": "../../../img/tabBar_village_cur.png", "selectedColor": "#4EDF80", active: false }, { "pagePath": "/pages/mine/mine", "text": "我的", "iconPath": "../../img/tabBar_mine.png", "selectedIconPath": "../../img/tabBar_mine_cur.png", "selectedColor": "#4EDF80", active: true } ], "position": "bottom" }
mine.wxml引入模板:
<import src="../../template/tabBar.wxml" /> <template is="tabBar" data="{{tabBar: tabBar}}" />
最后演示如下:
方案二,我把配置数据统一放在app.js文件,通过点击跳转页面后在把数据添加到当前页面实例上,具体做法如下:
1、app.js文件配置:
//app.js var net = require('common/net'); var a_l, a_d = {}, a_cbSucc, a_cbSuccFail, a_cbFail, a_cbCom, a_h, a_m; App({ onLaunch: function () { var that = this; }, //修改tabBar的active值 editTabBar: function () { var _curPageArr = getCurrentPages(); var _curPage = _curPageArr[_curPageArr.length - 1];<span style="font-family: Arial, Helvetica, sans-serif;">//相当于Page({})里面的this对象</span> var _pagePath=_curPage.__route__; if(_pagePath.indexOf('/') != 0){ _pagePath='/'+_pagePath; } var tabBar=this.globalData.tabBar; for(var i=0; i<tabBar.list.length; i++){ tabBar.list[i].active=false; if(tabBar.list[i].pagePath==_pagePath){ tabBar.list[i].active=true;//根据页面地址设置当前页面状态 } } _curPage.setData({ tabBar: tabBar }); }, globalData: { userInfo: null, //配置tabBar tabBar: { "color": "#9E9E9E", "selectedColor": "#f00", "backgroundColor": "#fff", "borderStyle": "#ccc", "list": [ { "pagePath": "/pages/index/index", "text": "主页", "iconPath": "/pages/templateImg/tabBar_home.png", "selectedIconPath": "/pages/templateImg/tabBar_home_cur.png", "selectedColor": "#4EDF80", active: false }, { "pagePath": "/pages/village/city/city", "text": "目的地", "iconPath": "/pages/templateImg/tabBar_village.png", "selectedIconPath": "/pages/templateImg/tabBar_village_cur.png", "selectedColor": "#4EDF80", active: false }, { "pagePath": "/pages/mine/mine", "text": "我的", "iconPath": "/pages/templateImg/tabBar_mine.png", "selectedIconPath": "/pages/templateImg/tabBar_mine_cur.png", "selectedColor": "#4EDF80", active: false } ], "position": "bottom" } } })
2、index.js+mine.js+city.js页面使用:
var App=getApp(); Page({ data:{ detail: {}, }, onLoad:function(options){ App.editTabBar();//添加tabBar数据 var that=this; } })
最终演示和上图一致!
附:完整demo代码点击此处本站下载。
希望本文所述对大家微信小程序开发有所帮助。
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