0. 官方指南
# 由于微信小程序的异步机制,页面跳转会出现随机事件
# 目的: 解决认证跳转过程的不友好体验
https://developers.weixin.qq.com/miniprogram/dev/framework/ability/custom-tabbar.html
1. app.json文件的处理
1. 添加:"custom": true,使用自定义的tabbar
2. 将非tabbar的内容删除,删除的示例是发布,如下:
"tabBar": {
"custom": true,
"selectedColor": "#CD5C5C",
"list": [
{
"pagePath": "pages/home/home",
"text": "首页",
"iconPath": "static/tabbar/ic_menu_choice_nor.png",
"selectedIconPath": "static/tabbar/ic_menu_choice_pressed.png"
},
{
"pagePath": "pages/auction/auction",
"text": "拍卖",
"iconPath": "static/tabbar/ic_menu_me_nor.png",
"selectedIconPath": "static/tabbar/ic_menu_me_pressed.png"
},
{
"pagePath": "pages/message/message",
"text": "消息",
"iconPath": "static/tabbar/ic_menu_me_nor.png",
"selectedIconPath": "static/tabbar/ic_menu_me_pressed.png"
},
{
"pagePath": "pages/index/index",
"text": "我的",
"iconPath": "static/tabbar/ic_menu_me_nor.png",
"selectedIconPath": "static/tabbar/ic_menu_me_pressed.png"
}
]
},
2. 创建组件目录
-component
-tabBar
-tabbar.js
-tabbar.json
-tabbar.wxml
-tabbar.wxss
3. js文件解读:
// component/tabbar/tabbar.js
var app = getApp()
Component({
/**
* 组件的属性列表:selected--标记tabbar的index,
*/
properties: {
selected: {
type: Number,
value: 0
}
},
/**
* 组件的初始数据
*/
data: {
color: "#7A7E83",
"selectedColor": "#CD5C5C",
"list": [
{
"pagePath": "/pages/home/home",
"text": "首页",
"iconPath": "/static/tabbar/ic_menu_choice_nor.png",
"selectedIconPath": "/static/tabbar/ic_menu_choice_pressed.png"
},
{
"pagePath": "/pages/auction/auction",
"text": "拍卖",
"iconPath": "/static/tabbar/ic_menu_me_nor.png",
"selectedIconPath": "/static/tabbar/ic_menu_me_pressed.png"
},
{
"text": "发布",
},
{
"pagePath": "/pages/message/message",
"text": "消息",
"iconPath": "/static/tabbar/ic_menu_me_nor.png",
"selectedIconPath": "/static/tabbar/ic_menu_me_pressed.png"
},
{
"pagePath": "/pages/index/index",
"text": "我的",
"iconPath": "/static/tabbar/ic_menu_me_nor.png",
"selectedIconPath": "/static/tabbar/ic_menu_me_pressed.png"
}
]
},
/**
* 组件的方法列表
* switchTab:跳转到tabbar页面,即首页,拍卖,消息,我的,四个自定义tabbar页面
* navigateTo:只能跳转到非tabbar页面,示例是发布页面:"/pages/publish/publish"
*/
methods: {
switchTab(e) {
var data = e.currentTarget.dataset
var url = data.path;
console.log(url)
if (url) {
wx.switchTab({ url });
} else {
if (app.globalData.userinfo) {
wx.navigateTo({
url: "/pages/publish/publish",
})
} else {
wx.navigateTo({
url: '/pages/login/login',
})
}
}
}
}
})
3. js文件解读:
# component:true ---即表示使用自定义tabbar
{
"component": true,
"usingComponents": {}
}
wxml 文件示例
# wx:for 循环list列表,生成自定义的tabbar标签
# 三元运算表达式:判断tabbar标签是否选中
- src="{{selected === index ? item.selectedIconPath : item.iconPath}}"
<!--miniprogram/custom-tab-bar/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}}" bindtap="switchTab">
<block wx:if="{{ index === 2}}">
<cover-view class="pub">{{item.text}}</cover-view>
</block>
<block wx:else>
<cover-image src="{{selected === index ? item.selectedIconPath : item.iconPath}}"></cover-image>
<cover-view style="color: {{selected === index ? selectedColor : color}}">{{item.text}}</cover-view>
</block>
</cover-view>
</cover-view>
4. wxss 文件示例
.tab-bar {
position: fixed;
bottom: 0;
left: 0;
right: 0;
height: 48px;
background: white;
display: flex;
padding-bottom: env(safe-area-inset-bottom);
z-index:998
}
.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: 27px;
height: 27px;
}
.tab-bar-item cover-view {
font-size: 10px;
}
.pub{
background-color: #fa3d;
height: 80rpx;
width: 80rpx;
border-radius: 50%;
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
}
5. 应用实例:home页面(tabbar)
# 两步骤即可
- selected:即为tabbar.js 文件中的properties属性列表,
- selected: 标记tabbar的index,
1. home.json: "tabbar": "/component/tabBar/tabBar"
- {
"usingComponents": {
"tabbar": "/component/tabBar/tabBar"
},
"enablePullDownRefresh": true
}
2. home.wxml:
- <tabbar selected="{{0}}"></tabbar>
- ......
6. 对于非tabbar的发布,不用做任何操作
原文地址:https://www.cnblogs.com/daviddd/p/12273837.html
时间: 2024-10-01 02:37:11