E_WeChat/custom-tab-bar/index.js

const _Http = getApp().globalData.http;
Component({
    lifetimes: {
        ready: function () {
            if (this.data.count == 1) return;
            if (wx.getStorageSync('userauth') != 0) {
                //判断页面 以免一直触发
                const pages = getCurrentPages(),
                    prevPage = pages[pages.length - 1];
                if (prevPage.route == 'pages/login/selectSite' || prevPage.route.includes('pages/tabbar/')) this.setData({
                    Permission: ['首页', '信息', '我的']
                })
            }
        },
    },
    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();
            getApp().globalData.socket = {
                that: this,
                callback: this.unReadMessageCount
            }
            this.unReadMessageCount()
        },
        /* 更新信息数量 */
        unReadMessageCount() {
            _Http.basic({
                "classname": "system.message.Message",
                "method": "unReadMessageCount",
                "content": {
                    nocache: true
                }
            }, false).then(res => {
                if (res.msg != '成功') return;
                let fcount = res.data.fcount > 99 ? '99+' : res.data.fcount;
                if (res.data.fcount == 0) fcount = "";
                getApp().globalData.socket.that.setData({
                    'tabbarList[1].fcount': fcount
                })
            })
        }
    },
})