//测试代码，正式版本应该删除canShow = YES;if(canShow){        NewFeatureModel *m1 = [NewFeatureModel model:[UIImage imageNamed:@"f1"]];        NewFeatureModel *m2 = [NewFeatureModel model:[UIImage imageNamed:@"f2"]];        NewFeatureModel *m3 = [NewFeatureModel model:[UIImage imageNamed:@"f3"]];        window.rootViewController = [CoreNewFeatureVC newFeatureVCWithModels:@[m1,m2,m3] enterBlock:^{        NSLog(@"结束回调");    }];}else{    UIViewController *vc = [[UIViewController alloc] init];    vc.view.backgroundColor = [UIColor brownColor];    window.rootViewController = vc;}