uin-app WeChat applet customizes tabBar bottom menu implementation simple example (work notes)

uin-app WeChat applet customizes tabBar bottom menu implementation simple example (work notas)

2024-07-12

Exsequendam customization in WeChat mini programma tabBar Potest providere flexibiliorem et personalem fundum navigationis in applicatione tua.Ex officialis WeChat mini programmatabBar Configurationis limitata facultates, csstabBar Electio multorum tincidunt facta est ad navigationem complexam efficiendam.Simplex exemplum talis est quomodo efficiendi customizationem in programmatis minitabBar。

Gradus I: Configure app.json

Primum, debes app.json Medium configurationetabBar basic notitia, sedcustom Ager debet esse constitutus totrue ut customization "tabBar。

{
  "pages": [
    "pages/index/index",
    "pages/logs/logs",
    "pages/profile/profile"
  ],
  "window": {
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "WeChat",
    "navigationBarTextStyle": "black"
  },
  "tabBar": {
    "list": [
      {
        "pagePath": "pages/index/index",
        "text": "首页"
      },
      {
        "pagePath": "pages/logs/logs",
        "text": "日志"
      },
      {
        "pagePath": "pages/profile/profile",
        "text": "我的"
      }
    ],
    "custom": true,
    "color": "#7A7E83",
    "selectedColor": "#3cc51f",
    "borderStyle": "black"
  }
}
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Gradus II: crea morem tabBar component

Nomen creare lima custom-tab-bar folder et crea in eo requiritur files (exempli gratiaindex.js、index.json、index.wxml、index.wxss）。

index.js

Logica hic discurrere potest, ut tabs mutandi in pagina hodierna fundata.

Component({
  data: {
    selected: 0,
    list: [{
      pagePath: '/pages/index/index',
      text: '首页'
    }, {
      pagePath: '/pages/logs/logs',
      text: '日志'
    }, {
      pagePath: '/pages/profile/profile',
      text: '我的'
    }]
  },
  methods: {
    switchTab: function(e) {
      const data = e.currentTarget.dataset;
      if (this.data.selected === data.index) return;
      wx.switchTab({url: data.path});
    },
    onShow: function(e) {
      // 当 tabBar 显示时触发，可以根据需要获取当前页面路径
      const { path } = getCurrentPages().pop();
      this.setData({
        selected: this.data.list.findIndex(tab => tab.pagePath === path)
      });
    }
  }
});
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index.json

Definire configurationem informationes componentis.

{
  "usingComponents": {}
}
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index.wxml

Definire structuram tabBar.

<view class="tab-bar">
  <block wx:for="{{list}}" wx:key="index" wx:for-index="idx">
    <view class="tab-item {{selected === idx ? 'active' : ''}}" data-path="{{item.pagePath}}" data-index="{{idx}}" bindtap="switchTab">
      {{item.text}}
    </view>
  </block>
</view>
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index.wxss

stilum add.

.tab-bar {
  display: flex;
  justify-content: space-around;
  background-color: #fff;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50px;
}

.tab-item {
  padding: 10px 0;
  text-align: center;
}

.tab-item.active {
  color: #3cc51f;
}
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Gradus III, usus mos tabBar in app.js

exist app.js Consuetudo tabBar componens introducere et utere.

App({
  onLaunch: function () {
    // 在这里可以执行一些启动时的逻辑
  },
  usingComponents: {
    '不同角色，控制查看底部菜单权限
    实现效果1：实体店![在这里插入图片描述](https://i-blog.csdnimg.cn/direct/2ca6098eefaf4d55935d9eb8d44116fb.png)
实现效果2：回收公司
![在这里插入图片描述](https://i-blog.csdnimg.cn/direct/da1d7b225c064d3ab058176211f65833.png)

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