Adding spaces in front of text field via subclassing - ios

Question

So I am currently trying to add some space before my text in a text field. So when I type, it starts with four spaces instead of none. So I did some research and I came across something that seems really good (as indicated by all the votes), i.e., Create space at the beginning of a UITextField. One problem is that I do not know how to actually implement this in my other classes (assuming that's what the post is intending the reader to do).
This is what I think I'm supposed to do. I think I'm supposed to instantiate an object of that class and use the methods in the class to add spaces in front of my text field. But I don't actually know what that looks like in code. Could anyone give me an example of how to actually implement the code on this post? Create space at the beginning of a UITextField
Here is the code that I have so far:
import UIKit
class SignUpViewController: UIViewController {
#IBOutlet weak var facebookButton: UIButton!
#IBOutlet weak var googleplusButton: UIButton!
#IBOutlet weak var fullNameTextField: UITextField!
#IBOutlet weak var emailAddressTextField: UITextField!
#IBOutlet weak var passwordTextField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
facebookButton.layer.cornerRadius = 5
googleplusButton.layer.cornerRadius = 5
fullNameTextField.layer.borderColor = UIColor.lightGrayColor().CGColor
fullNameTextField.layer.borderWidth = 1.0
emailAddressTextField.layer.borderColor = UIColor.lightGrayColor().CGColor
emailAddressTextField.layer.borderWidth = 1.0
passwordTextField.layer.borderColor = UIColor.lightGrayColor().CGColor
passwordTextField.layer.borderWidth = 1.0
}
}

Answer 1

You need to create subclass of UITextField. Then add this code in its implementation
static CGFloat leftMargin = 10;
- (CGRect)textRectForBounds:(CGRect)bounds
{
bounds.origin.x += leftMargin;
bounds.size.width -= (leftMargin + 20);
return bounds;
}
- (CGRect)editingRectForBounds:(CGRect)bounds
{
bounds.origin.x += leftMargin;
bounds.size.width -= (leftMargin + 20);
return bounds;
}
After that, set custom class to your UITextField.

Answer 2

You should create a class from #ScareCrow answer. After that go to the storyboard and change the class of the UITextField. Such as:
After that create an IBOutlet of the textfield. That outlet will be instance of the TextField class.