onLoad() {
		wx.showShareMenu({
			withShareTicket:true,
			//設置下(xià)方的Menus菜單，才能夠讓發送給朋友與分享到朋友圈兩個(gè)按鈕可(kě)以點擊
			menus:["shareAppMessage","shareTimeline"]
		})
	}
	// 分享給好友
	onShareAppMessage() {
		return {
			title: 'xxx,
            path: '/pages/enter/index'
    }
  },
	// 分享朋友圈
	onShareTimeline() {
    return {
			title: 'xxx',
			imageUrl: '/static/adv.jpg' //可(kě)以本地也可(kě)以線上
	}
  },

參考：https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/share-timeline.html