Adding image to the TextField - ios

Question

im trying to add an icon to my username textfield, somehow I added the icon but I cant add any padding to it.
What I mean is, I want it to look like this:
And what I get is this:
let usernameTextField: UITextField = {
let tf = UITextField()
let imageView = UIImageView()
let image = UIImage(named: "user-icon")
imageView.image = image
imageView.frame = CGRect(x: 0, y: 0, width: 10, height: 15)
tf.leftViewMode = UITextFieldViewMode.always
tf.leftView = imageView
tf.addSubview(imageView)
var placeholder = NSMutableAttributedString(string: "username", attributes: [NSForegroundColorAttributeName: UIColor.lightGray])
tf.attributedPlaceholder = placeholder
tf.backgroundColor = UIColor.rgb(red: 34, green: 34, blue: 34)
tf.borderStyle = .roundedRect
tf.font = UIFont.systemFont(ofSize: 14)
tf.layer.cornerRadius = 25
tf.textColor = .white
tf.layer.borderWidth = 1
tf.layer.borderColor = UIColor(white: 1, alpha: 0.1).cgColor
tf.layer.masksToBounds = true
return tf
}()
And this is my code block. Even if I change the x and y values it doesnt event move any pixels.

Answer 1

Increase the width of the view and center the image. Adjust the width accordingly (I have set it 50). Try this ...
let usernameTextField: UITextField = {
let tf = UITextField()
let imageView = UIImageView()
let image = UIImage(named: "user-icon")
imageView.image = image
imageView.frame = CGRect(x: 0, y: 0, width: 50, height: 15)
imageView.contentMode = .scaleAspectFit
tf.leftViewMode = UITextFieldViewMode.always
tf.leftView = imageView
tf.addSubview(imageView)
var placeholder = NSMutableAttributedString(string: "username", attributes: [NSForegroundColorAttributeName: UIColor.lightGray])
tf.attributedPlaceholder = placeholder
tf.backgroundColor = UIColor.init(red: 35.0/100.0, green: 34.0/100.0, blue: 34.0/100.0, alpha: 1)
tf.borderStyle = .roundedRect
tf.font = UIFont.systemFont(ofSize: 14)
tf.layer.cornerRadius = 25
tf.textColor = .white
tf.layer.borderWidth = 1
tf.layer.borderColor = UIColor(white: 1, alpha: 0.1).cgColor
tf.layer.masksToBounds = true
return tf
}()