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
message.mediaObject = object;
SendMessageToWXReq *req = [[SendMessageToWXReq alloc] init];
req.bText = NO;
req.message = message;
req.scene = WXSceneSession;  //目前只支持会话
[WXApi sendReq:req];

小程序的描述分享到微信小程序后没有显示