[Solved] You wrote this code to pop to the root view controller: navigationController.popToRootViewController(animated: true) But your app crashes with an error. What is the most likely cause? | iOS Swift

iOS Swift - Navigation

You wrote this code to pop to the root view controller:

navigationController.popToRootViewController(animated: true)

But your app crashes with an error. What is the most likely cause?

Aanimated parameter must be false to avoid crashes.

BpopToRootViewController requires a completion handler parameter.

CnavigationController is nil because the view controller is not inside a navigation stack.

DYou must call popViewController instead of popToRootViewController.

Step-by-Step Solution

Solution:

Step 1: Understand navigationController optional
navigationController is optional and can be nil if the current controller is not inside a navigation stack.
Step 2: Check method requirements
popToRootViewController(animated:) does not require a completion handler and accepts true or false for animation.
Final Answer:
navigationController is nil because the view controller is not inside a navigation stack. -> Option C
Quick Check:
Nil navigationController causes crash [OK]

Quick Trick: Check if navigationController is nil before popping [OK]

Common Mistakes:

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