WXMiniProgramObject *object = [WXMiniProgramObject object];

object.webpageUrl = webpageUrl;

object.userName = userName;

object.path = path;

object.hdImageData = hdImageData;

object.withShareTicket = withShareTicket;

object.miniProgramType = programType;

WXMediaMessage *message = [WXMediaMessage message];

message.title = @"小程序标题";

message.description = @"小程序描述";

message.thumbData = nil; //兼容旧版本节点的图片，小于32KB，新版本优先

//使用WXMiniProgramObject的hdImageData属性