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按照官方自定义tabBar:
{ "tabBar": { "custom": true, "color": "#a9b7b7", "selectedColor": "#11cd6e", "borderStyle": "black", "list": [ { "pagePath": "pages/index/index", "iconPath": "images/tabbar/home0.png", "selectedIconPath": "images/tabbar/home1.png", "text": "首页" }, { "pagePath": "pages/my/index", "iconPath": "images/tabbar/my0.png", "selectedIconPath": "images/tabbar/my1.png", "text": "我的" } ]
添加 tabBar 代码文件
在代码根目录下添加入口文件 custom-tab-bar :必须与pages在同一根目录下。
编写 tabBar 代码
用自定义组件的方式编写即可,该自定义组件完全接管 tabBar 的渲染,我的代码如下:
index.js:
// custom-tab-bar/index.js Component({ data: { selected: 0, color: "#696969", selectedColor: "#31F60A", "list": [ { "pagePath": "/pages/index/index", "iconPath": "/images/tabbar/home0.png", "selectedIconPath": "/images/tabbar/home1.png", "text": "首页", }, { "pagePath": "/pages/my/index", "iconPath": "/images/tabbar/my0.png", "selectedIconPath": "/images/tabbar/my1.png", "text": "我的", } ] }, attached() { }, methods: { switchTab(e) { const data = e.currentTarget.dataset const url = data.path wx.switchTab({url}) // this.setData({ // selected: data.index // }) } } })
index.json:
{
"component": true
}
index.wxml:
<!--miniprogram/custom-tab-bar/index.wxml-->
<view class="tab-bar">
<view class="tab-bar-border"></view>
<view wx:for="{{list}}" wx:key="index" class="tab-bar-item" data-path="{{item.pagePath}}" data-index="{{index}}" bindtap="switchTab">
<image src="{{selected === index ? item.selectedIconPath : item.iconPath}}"></image>
<view style="color: {{selected === index ? selectedColor : color}}">{{item.text}}</view>
</view>
</view>
index.wxss:
/* custom-tab-bar/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 image { width: 27px; height: 27px; } .tab-bar-item view { font-size: 10px; }
4.在每一个需要引用自定义tabBar的页面js文件内添加引入代码:
// 引入Tabbar
Component({
pageLifetimes: {
show() {
if (typeof this.getTabBar === 'function' &&
this.getTabBar()) {
this.getTabBar().setData({
selected: 4
})
}
}
}
})
这里的 selected:首页是0,之后依次排序。
好了,到这里基本是官方给出的方法,但是首次点击tabBar时,图标闪烁,试验了很多,都无效。
最后将app.json内引入tabBar组件的 custom由true改为false,就不再闪烁了。
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