iOS app跳转微信小程序

            WXLaunchMiniProgramReq *launchMiniProgramReq = [WXLaunchMiniProgramReq object];
            launchMiniProgramReq.userName = appId;  //拉起的小程序的username,appid为gh_开头的，非wx开头的
            //                        launchMiniProgramReq.path = path;    //拉起小程序页面的可带参路径，不填默认拉起小程序首页
            launchMiniProgramReq.miniProgramType = WXMiniProgramTypeRelease; //拉起小程序的类型
            [WXApi sendReq:launchMiniProgramReq];