You need to send an array of strings from FirstViewController to SecondViewController before navigation. Which approach correctly accomplishes this in Swift?
hard📝 Application Q8 of 15
iOS Swift - Navigation
You need to send an array of strings from FirstViewController to SecondViewController before navigation. Which approach correctly accomplishes this in Swift?
ACreate a new instance of SecondViewController, assign the array, then call present(_:animated:)
BIn prepare(for:sender:), cast segue.destination to SecondViewController and assign the array to a property declared in SecondViewController
CStore the array in UserDefaults and retrieve it in SecondViewController's viewDidLoad()
DPass the array as a parameter in the segue's identifier string
Step-by-Step Solution
Solution:
Step 1: Use prepare(for:sender:)
This method is designed to pass data before segue transitions.
Step 2: Cast destination VC
Cast segue.destination to SecondViewController to access its properties.
Step 3: Assign array property
Assign the array to a property declared in SecondViewController for use after transition.
Final Answer:
In prepare(for:sender:), cast segue.destination to SecondViewController and assign the array to a property declared in SecondViewController correctly uses the segue mechanism and property assignment.
Quick Check:
Use prepare and cast destination VC [OK]
Quick Trick:Assign data in prepare(for:sender:) after casting [OK]
Common Mistakes:
Creating new VC instance instead of using segue.destination
Using UserDefaults for temporary data passing
Trying to encode data in segue identifier
Master "Navigation" in iOS Swift
9 interactive learning modes - each teaches the same concept differently
