E_WeChat/custom-tab-bar/index.js

const _Http = getApp().globalData.http;
Component({
  lifetimes: {},
  data: {
    active: 'home',
    Permission: ['首页', '信息', '我的'], //可看模块
    tabbarList: [{
        icon: 'icon-a-biaoqianlanshouyexuanzhong',
        acicon: 'icon-a-biaoqianlanshouyexuanzhong',
        text: '首页',
        url: '/pages/tabbar/home/index',
        name: 'home'
      },
      {
        icon: 'icon-a-biaoqianlanxiaoxi',
        acicon: 'icon-a-biaoqianlanxiaoxixuanzhong',
        text: '信息',
        url: '/pages/tabbar/message/index',
        name: 'message'
      },
      {
        icon: 'icon-a-biaoqianlanwode',
        acicon: 'icon-a-biaoqianlanwodexuanzhong',
        text: '我的',
        url: '/pages/tabbar/mine/index',
        name: 'mine'
      }
    ]
  },
  methods: {
    onChange(event) {
      let active = event.detail,
        obj = this.data.tabbarList.find(v => v.name == active);
      wx.switchTab({
        url: obj.url
      });
      this.setData({
        active
      });
    },
    init() {
      const page = getCurrentPages().pop();
      let obj = this.data.tabbarList.find(item => item.url === `/${page.route}`);
      this.setData({
        active: obj.name
      });
      //socket
      if (!getApp().globalData.socketEstablish) getApp().initSocket();
      if (!getApp().globalData.socketCallback) getApp().globalData.socketCallback = this.unReadMessageCount.bind(this);
      this.setUnReadMessageCount(getApp().globalData.fcount);
      getApp().globalData.Language.getLanguagePackage(this, obj.text);
    },
    /* 设置未读数量 */
    setUnReadMessageCount(fcount) {
      let i = this.data.tabbarList.findIndex(v => v.name == 'message');
      this.setData({
        [`tabbarList[${i}].fcount`]: fcount
      })
    },
    /* 更新信息数量 */
    unReadMessageCount() {
      _Http.basic({
        "classname": "system.message.Message",
        "method": "unReadMessageCount",
        "content": {
          nocache: true
        }
      }, false).then(res => {
        console.log('信息数量', res)
        if (res.code != '1') return;
        let fcount = res.data.fcount > 99 ? '99+' : res.data.fcount;
        if (res.data.fcount == 0) fcount = "";
        getApp().globalData.fcount = fcount;
        this.setUnReadMessageCount(fcount);
      })
    }
  },
})