[Solved] Given the code below, what happens when the button is tapped? let button = UIButton() button.addTarget(self, action:... Given the code below, what happens when the button is tapped? | iOS Swift

iOS Swift - SwiftUI Basics

Given the code below, what happens when the button is tapped?

let button = UIButton()
button.addTarget(self, action: #selector(showMessage), for: .touchUpInside)

@objc func showMessage() {
    print("Button was tapped")
}

AThe app crashes due to missing button title

BNothing happens because the method is missing @objc

CThe message "Button was tapped" is printed to the console

DThe button changes color automatically

Step-by-Step Solution

Solution:

Step 1: Check action method annotation
The method showMessage is marked with @objc, so it can be called by the button.
Step 2: Understand button tap behavior
When tapped, the button triggers showMessage, which prints the message.
Final Answer:
The message "Button was tapped" is printed to the console -> Option C
Quick Check:
@objc method called on tap = print message [OK]

Quick Trick: @objc method runs on button tap printing message [OK]

Common Mistakes:

Forgetting @objc on action method
Expecting UI changes without code
Confusing button title with action effect

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More iOS Swift Quizzes

Given the code below, what happens when the button is tapped?

Step 1: Check action method annotation

Step 2: Understand button tap behavior

Final Answer:

Quick Check:

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