set UIButton's buttonType programmatically

Question

I have a UIButton which I've added in IB, however the view behind this button changes color and I need to switch the button's type between InfoDark and InfoLight. Bizarrely though, buttonType property is read only. So how can i switch between light and dark info buttons?

This is not a duplicate. This question is about changing the button type after it is instantiated. The referenced question is about how to instantiate the button in code. Please remove the duplication. — osxdirk, Aug 24 '17 at 09:25
swift 5.2 : self.btnFont.buttonType = UIButton.ButtonType.system — Ucdemir, Nov 13 '20 at 14:49

score 54 · Answer 1 · answered Sep 05 '11 at 11:31

54

You can't set buttonType readonly property, use below may help:

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];

answered Sep 05 '11 at 11:31

anhduongt

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What's when you override UIButton class ? (I mean subclass) – Paweł Brewczynski Mar 22 '14 at 08:26
In swift , If you are using custome class then, let button = MyCustomeClass.init(type: .custom) – MiTal Khandhar Feb 02 '18 at 04:52

score 33 · Accepted Answer · answered Jun 20 '10 at 16:45

33

There's no way to change the .buttonType once it's set.

You can prepare two buttons, and hide one of them depending on the background color.

answered Jun 20 '10 at 16:45

kennytm

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well apparently theres a private setter method, by why something like that is private who knows. Thanks for you idea about 2 buttons, that's what I'll do. – Jonathan. Jun 20 '10 at 17:38
@Jon: It's private because setting this will *not* convert a dark info button to a light one. – kennytm Jun 20 '10 at 19:08

set UIButton's buttonType programmatically

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