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];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];https://developers.weixin.qq.com/miniprogram/introduction/ 使用上述代码，hdImageData为app本地图片，png/jpg/jpeg格式图片、宽高比5:4，大小50几KB分享过程持续5分钟，13KB分享过程30几秒，整个用户体验很差。