이번 내용

코드와 간략한 설명

import UIKit

class FirstActionViewController: UIViewController {

    @IBOutlet weak var textfield: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()

        textfield.leftViewMode = .always
        textfield.leftView = {() -> UIImageView in

            let imageView = UIImageView(frame: CGRect(x: textfield.frame.minX + 10, y: textfield.frame.minY, width: textfield.frame.height - 10, height: textfield.frame.height))
            imageView.image = UIImage(systemName: "lock.fill")
            imageView.tintColor = .systemRed

            return imageView
        }()


        //コードで作成したUITextField
        let textfield01 = UITextField()
        textfield01.frame = CGRect(x: view.frame.maxX / 10, y: view.frame.maxY / 6, width: view.frame.width - (view.frame.maxX / 5), height: 50)
        textfield01.placeholder = "UITextField01"
        textfield01.layer.cornerRadius = 10.0
        textfield01.layer.borderWidth = 1.0
        textfield01.leftView = {() -> UIImageView in

            let imageView = UIImageView(frame: CGRect(x: textfield01.frame.minX, y: textfield01.frame.minY, width: textfield01.frame.height, height: textfield01.frame.height))
            imageView.image = UIImage(systemName: "lock.fill")
            imageView.tintColor = .systemRed

            return imageView
         }()

        textfield01.rightViewMode = .always
        textfield01.rightView = UISwitch()
        textfield01.leftViewMode = .always
        textfield01.layer.borderColor = UIColor.black.cgColor
        textfield01.backgroundColor = .white
        view.addSubview(textfield01)   
    }

}

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