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I develop app for drawing on screen. I have toolpanel with bunch of buttons. Some of them have to become disabled or pressed depending on current user action. How can I change UIControlState of buttons programmatically considering that "state" property is readonly? If it's impossible, what is alternative for this purpose?

Duncan C
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Oleh Liskovych
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2 Answers2

35

I think you're confused. UIControlState is used to set up target/actions, or to change the appearance of the button for specific states (So, for example, you can specify the image that's used when it's selected, and a different image for when the button is not in the selected state.)

If you want to change the state to selected, you just set the selected property. 

button.isSelected = true

Likewise for isEnabled: 

button.isEnabled = false //disable the button
Duncan C
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12

Use the correct property to change the state. For example

button.isSelected = true

or

button.isHighlighted = true
Retterdesdialogs
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    This may be an old thread, but it looks like you beat me to the answer by a minute. I'm not sure why you didn't get the check or the votes, but I'm giving you my vote since you were first to answer correctly. – Duncan C May 10 '20 at 21:49
  • @DuncanC No problem for me. Im not searching for votes or checks, just want to help out people :) But thank you. – Retterdesdialogs Jun 03 '20 at 08:15