adjustsFontForContentSizeCategory not working for UITextView and UITextField

Question

I'm switching away from preferredContentSizeChanged to use adjustsFontForContentSizeCategory for my UILabel, UITextView, and UITextField classes. It works for UILabel, but not for UITextView and UITextField. It only works if I call setNeedsDisplay inside preferredContentSizeChanged.

What am I missing?

Answer 1

You also need to set the font used by the UITextfield to be scalable:

    textField.adjustsFontForContentSizeCategory = true
    textField.font = .preferredFont(forTextStyle: .body)