Solution:Step 1: Understand pushViewController effectSettingsViewController is pushed on top of HomeViewController.Step 2: Understand popToRootViewController effectThis method pops all view controllers except the root, showing HomeViewController again.Final Answer:HomeViewController screen -> Option

[Solved] Consider this code:let nav = UINavigationController(rootViewController: HomeViewController()) nav.pushViewController(SettingsViewController(), animated: true) nav.popToRootViewController(animated:... | iOS Swift

iOS Swift - Navigation

Consider this code:

let nav = UINavigationController(rootViewController: HomeViewController())
nav.pushViewController(SettingsViewController(), animated: true)
nav.popToRootViewController(animated: true)

What is the visible screen after these calls?

ASettingsViewController screen

BApp crashes due to incorrect navigation

CEmpty screen because stack is cleared

DHomeViewController screen

Step-by-Step Solution

Solution:

Step 1: Understand pushViewController effect
SettingsViewController is pushed on top of HomeViewController.
Step 2: Understand popToRootViewController effect
This method pops all view controllers except the root, showing HomeViewController again.
Final Answer:
HomeViewController screen -> Option D
Quick Check:
popToRootViewController shows root VC [OK]

Quick Trick: popToRootViewController returns to root screen [OK]

Common Mistakes:

Assuming popToRootViewController removes all VCs
Thinking SettingsViewController remains visible
Confusing popToRoot with popViewController

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More iOS Swift Quizzes

Consider this code:

Step 1: Understand pushViewController effect

Step 2: Understand popToRootViewController effect

Final Answer:

Quick Check:

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