Adding UITextField on UIView Programmatically Swift

Question

I'm new to Swift and iOS programming. I was trying to create a UITextField programmatically using Swift but couldn't get it quite right. Also how do you change it to have a translucent effect to fade into the background?

var myField: UITextField = UITextField (frame:CGRectMake(10, 10, 30, 10)); self.addSubview(myField) 

Answer 1

Swift 3 & Swift 4.2:

override func viewDidLoad() {     super.viewDidLoad()      let sampleTextField =  UITextField(frame: CGRect(x: 20, y: 100, width: 300, height: 40))     sampleTextField.placeholder = "Enter text here"     sampleTextField.font = UIFont.systemFont(ofSize: 15)     sampleTextField.borderStyle = UITextField.BorderStyle.roundedRect     sampleTextField.autocorrectionType = UITextAutocorrectionType.no     sampleTextField.keyboardType = UIKeyboardType.default     sampleTextField.returnKeyType = UIReturnKeyType.done     sampleTextField.clearButtonMode = UITextField.ViewMode.whileEditing     sampleTextField.contentVerticalAlignment = UIControl.ContentVerticalAlignment.center     sampleTextField.delegate = self     self.view.addSubview(sampleTextField) } 

Delegate Methods:

// MARK:- ---> UITextFieldDelegate  extension ViewController: UITextFieldDelegate {      func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {         // return NO to disallow editing.         print("TextField should begin editing method called")         return true     }      func textFieldDidBeginEditing(_ textField: UITextField) {         // became first responder         print("TextField did begin editing method called")     }      func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {         // return YES to allow editing to stop and to resign first responder status. NO to disallow the editing session to end         print("TextField should snd editing method called")         return true     }      func textFieldDidEndEditing(_ textField: UITextField) {         // may be called if forced even if shouldEndEditing returns NO (e.g. view removed from window) or endEditing:YES called         print("TextField did end editing method called")     }      func textFieldDidEndEditing(_ textField: UITextField, reason: UITextFieldDidEndEditingReason) {         // if implemented, called in place of textFieldDidEndEditing:         print("TextField did end editing with reason method called")     }      func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {         // return NO to not change text         print("While entering the characters this method gets called")         return true     }      func textFieldShouldClear(_ textField: UITextField) -> Bool {         // called when clear button pressed. return NO to ignore (no notifications)         print("TextField should clear method called")         return true     }      func textFieldShouldReturn(_ textField: UITextField) -> Bool {         // called when 'return' key pressed. return NO to ignore.         print("TextField should return method called")         // may be useful: textField.resignFirstResponder()         return true     }  }  // MARK: UITextFieldDelegate <--- 

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Swift 2.0:

let sampleTextField = UITextField(frame: CGRectMake(20, 100, 300, 40)) sampleTextField.placeholder = "Enter text here" sampleTextField.font = UIFont.systemFontOfSize(15) sampleTextField.borderStyle = UITextBorderStyle.RoundedRect sampleTextField.autocorrectionType = UITextAutocorrectionType.No sampleTextField.keyboardType = UIKeyboardType.Default sampleTextField.returnKeyType = UIReturnKeyType.Done sampleTextField.clearButtonMode = UITextFieldViewMode.WhileEditing; sampleTextField.contentVerticalAlignment = UIControlContentVerticalAlignment.Center sampleTextField.delegate = self self.view.addSubview(sampleTextField) 

Delegate Methods:

    // MARK:- ---> Textfield Delegates     func textFieldDidBeginEditing(textField: UITextField) {         print("TextField did begin editing method called")     }      func textFieldDidEndEditing(textField: UITextField) {         print("TextField did end editing method called")     }      func textFieldShouldBeginEditing(textField: UITextField) -> Bool {         print("TextField should begin editing method called")         return true;     }      func textFieldShouldClear(textField: UITextField) -> Bool {         print("TextField should clear method called")         return true;     }      func textFieldShouldEndEditing(textField: UITextField) -> Bool {         print("TextField should snd editing method called")         return true;     }      func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {         print("While entering the characters this method gets called")         return true;     }      func textFieldShouldReturn(textField: UITextField) -> Bool {         print("TextField should return method called")         textField.resignFirstResponder();         return true;     }     // MARK: Textfield Delegates <---