在iOS中，导航显示导航

Question

我尝试使用导航显示导航，但过渡动画是从下往上。

UIViewController2 * vc2 = [[UIViewController2 alloc] init]; 
UINavigationController * nav = [[UINavigationController alloc] initWithRootViewController:vc2]; 
[self.navigationController showViewController:nav sender:nil]; 

Answer 1

试试。

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil]; 
SecondViewController * vc = [storyboard instantiateViewControllerWithIdentifier:@"ViewControllerB"]; 
[[self navigationController] pushViewController:vc animated:YES];