iOS Swift - SwiftUI Basics
Which of the following is the correct syntax to assign an action method to a UIButton for the .touchUpInside event in Swift?
Which of the following is the correct syntax to assign an action method to a UIButton for the .touchUpInside event in Swift?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Use addTarget(_:action:for:) method
This method is used to add a target and action for a control event.Step 2: Use #selector syntax for the action
The action parameter requires a selector, which is specified using #selector(methodName).Final Answer:
button.addTarget(self, action: #selector(buttonPressed), for: .touchUpInside) -> Option BQuick Check:
Correct method and selector syntax used [OK]
Quick Trick: Use addTarget with #selector for button actions [OK]
Common Mistakes:
- Using addAction instead of addTarget
- Passing method name without #selector
- Using setAction which doesn't exist
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