异步数据设置为小程序分享内容

场景 一个列表 点击不同数据设置 小程序分享不同内容，内容都是点击之后异步获取/生成的

1.同步监听异步数据是否处理完成

async getTicketImg(){
	let that = this;
	await new Promise((resolve,reject)=>{
		that.time = setInterval(()=>{
			if(that.ticket.imageUrl){
				resolve();
				clearInterval(that.time)
			}
		},100)
	});
	return that.ticket;
},

2.阻塞 onShareAppMessage 分享周期

async onShareAppMessage(){
	let that = this;
	clearInterval(that.time)
	let ticket = await this.getTicketImg();
	let uid =  '';
	try {
		const res = uni.getStorageSync('member');
		uid = res.id;
	} catch (e) {
	}
	return {
		  title: '送你一张优惠券，快来领取 吧～',
		  path:  'pagesMine/couponReceive/couponReceive?id='+ticket.id+"&uid="+uid,
		  imageUrl:ticket.imageUrl
	}
},