使工作表按钮打开另一个ViewController？

Question

有人给了我这段代码，对吗？如果是这样，我该如何使用它？我是一个noob，所以你可以用简单的术语来解释我吗？谢谢你们:)

- (IBAction)OpenActionSheetButton:(id)sender { 


UIActionSheet *actionsheet = [[UIActionSheet alloc]initWithTitle:@"There is no going back, 
are you sure???" delegate:self cancelButtonTitle:@"Cancel" 
destructiveButtonTitle:@"Continue" otherButtonTitles:nil, nil]; 
[actionsheet showInView:self.view];} 

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex: 
(NSInteger)buttonIndex 
{ 
if(buttonIndex == 0) 
{ 
UIViewController *controller = [self.storyboard 
instantiateViewControllerWithIdentifier:@"storyboardViewIdentifier"]; 
    //storyboardViewIdentifier is the ViewController identifier you specify in the 
storyboard 

    //PUSH 
    [self.navigationController pushViewController:controller animated:YES]; 
    //Modal 
    [self presentViewController:controller animated:YES completion:Nil]; 
} 

}

Answer 1

我不知道用故事板的情况，但随着厦门国际银行的情况下，我需要设置的UINavigationController对象RootViewController的，这样我可以从一个推视图控制器到另一个，我认为在故事板可能是相同的，如果是这样，请参阅这些答案，first和second在故事板环境中将导航控制器设置为rootviewcontroller。