iOS Swift - Navigation
Which of the following is the correct syntax to push a view controller named
DetailViewController onto the navigation stack?Which of the following is the correct syntax to push a view controller named DetailViewController onto the navigation stack?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Check method call and optional chaining
navigationController is optional, so use ? to safely call method.Step 2: Instantiate the view controller correctly
UseDetailViewController()to create an instance before pushing.Final Answer:
navigationController?.pushViewController(DetailViewController(), animated: true) -> Option BQuick Check:
Optional chaining + instance creation = correct syntax [OK]
Quick Trick: Use ? for optional navigationController and () to create instance [OK]
Common Mistakes:
- Forgetting to instantiate the view controller
- Not using optional chaining on navigationController
- Using wrong method name like push instead of pushViewController
Master "Navigation" in iOS Swift
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore iOS Swift Quizzes