在运行时更改UITextField的高度

Question

I created a UITextField subclass with some subviews and animation - looks like a material design textfield (I want to put it online for everybody to use when I polish it).

The problem I am facing is fairly interesting. When I create a UITextField using Interface Builder, I cannot change the height of this UITextField afterwards. I am using this code and nothing happens:

    let theFrame = CGRect(origin: 40, size: CGSize(width: 200, height: 40))
    myUITextField.frame = theFrame

When I create myUITextField in code (in viewDidLoad method) the above code works. When I create it using interface builder, that code does not work.

Any ideas?

Answer 1

If you're using Autolayout, which may be the reason the height isn't changing at the moment, you can change the height of your UITextField by changing the constant on the NSLayoutConstraint controlling the height. To get that constraint when using IB you can ctrl-drag to from the constraint to your UIViewController .

Answer 2

To be able to edit in runtime the height of a UITextField that you placed using Interface Builder, you should change the "border" property of that textfield to none, using interface builder.

I asked this while creating this subclass: https://github.com/KaanEmec/UIMaterialTextField

Feel free to use it.