我模态地展示了一个登录界面,如果我有错误,请纠正我。
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *ivc = [storyboard instantiateViewControllerWithIdentifier:@"login"];//LOOK AT NEXT LINE
[self presentViewController:ivc animated:YES completion:nil];
登录界面确实出现,但动画效果是向上滑动的。我更喜欢淡入淡出的动画效果。我该怎么做?