IOS UITextField文本框控件

import UIKit
 class ViewController：UIViewController,
 UITextFieldDelegate {
 override func viewDidLoad() {
 super.viewDidLoad()
 // Do any additional setup after loading the view,typically from a nib.
 let rect = CGRect(x：60, y：80, width：200, height：30)
 let textField = UITextField(frame：rect)
 textField.borderStyle = UITextBorderStyle.roundedRect
 textField.placeholder = “Your Email”
 textField.autocorrectionType =
 UITextAutocorrectionType.no
 textField.returnKeyType = UIReturnKeyType.done
 textField.clearButtonMode =UITextFieldViewMode.whileEditing
 textField.keyboardType =UIKeyboardType.emailAddress
 textField.keyboardAppearance =UIKeyboardAppearance.dark
 textField.delegate = self
 self.view.addSubview(textField)
 }
 func textFieldShouldReturn(_ textField：UITextField)-> Bool {
 textField.resignFirstResponder()
 return true
 }
 }
//UITextBorderStyle

//UITextFieldViewMode

 //UIReturnKeyType
 

textField.backgroundColor = UIColor.brown
 textField.background = UIImage(named：“background”)
 textField.isEnabled = false
 textField.disabledBackground =UIImage(named：“disabledBackground”)