move code from uikit to swift in swift

To move code from UIKit to Swift, follow these steps:

1. Identify the UIKit code you want to convert to Swift.
2. Create a new Swift file.
3. Copy the relevant parts of the UIKit code and paste them into the new Swift file.
4. Modify the code to use Swift syntax and constructs instead of UIKit syntax and constructs.

For example, to convert this UIKit code:

let button = UIButton(type: .system)
button.setTitle("Click Me", for: .normal)
button.frame = CGRect(x: 50, y: 50, width: 100, height: 50)
button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
view.addSubview(button)
240 chars
6 lines

To Swift code, you would do this:

let button = UIButton(type: .system)
button.setTitle("Click Me", for: .normal)
button.frame = CGRect(x: 50, y: 50, width: 100, height: 50)
button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
view.addSubview(button)

@objc func buttonTapped() {
  // Handle button tap
}
294 chars
10 lines

Note that self refers to the current view controller in UIKit, but because we are now using Swift, self is inferred automatically.

By copying and modifying the relevant parts of the UIKit code, you can gradually refactor your code to use Swift.