微信开发平台已关联小程序

WXLaunchMiniProgramReq *launchMiniProgramReq = [WXLaunchMiniProgramReq object];

    launchMiniProgramReq.userName = @"";  //拉起的小程序的username

    launchMiniProgramReq.path = nil;    //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 = WXMiniProgramTypePreview; //拉起小程序的类型

    [WXApi sendReq:launchMiniProgramReq];

//    [WXApi openWXApp];

-(void)onResp:(BaseResp *)resp

{

    if ([resp isKindOfClass:[WXLaunchMiniProgramResp class]])

    {

//        NSString *string = resp.extMsg;

        NSLog(@"respeee:%@",resp.errStr);

        // 对应JsApi navigateBackApplication中的extraData字段数据

    }

}

对应的跳转代码