微信公众号扫码事件 ScanCodeInfo->ScanType;没有返回值 安卓7.0.7 小米8

{"ToUserName":"gh_6b426b7ece21","FromUserName":"oJOXfsgipCakuafuKCQPxnWihR","CreateTime":"1571967734","MsgType":"event","Event":"scancode_waitmsg","EventKey":"rselfmenu_0_1","ScanCodeInfo":{"ScanType":{},"ScanResult":"http:\/\/tm.qipai.com\/t.jsp?id=14rCS3Qb2"}}