Properties set in the constructor of a custom UIButton class are ignored on iOS15

Asked Sep 10 '21 at 12:38

Active Sep 10 '21 at 13:30

Viewed 121 times

I wanted to check if everything's fine with my app on iOS 15. Spoiler alert : no.

I've identified a problem with my buttons, so I've downloaded Visual Studio 2022 Preview, and Xcode-beta which comes with iOS 15.

Here is my custom UIButton class (simplified to make it straightforward) :

public class AppButton : UIButton
{
    public AppButton(IntPtr handle) : base(handle)
    {
        SetTitle("Hello", UIControlState.Normal); // Not working on iOS 15
        Alpha = .2f; // Not working on iOS 15
    }
}

In previous iOS versions, it was working fine and each AppButton had the title "Hello" with a lot of transparency (.2f).

But in IOS 15, it is not working anymore : AppButton have no title, and no transparency.

It's kind of like nothing in the default constructor is interpreted (I still can debug it with success), or there's something that overrides it after.

Fun fact is I also have an AppLabel class that do pretty much the same as this AppButton class, and this one works ! So there's obviously a problem with my AppButton class... Could this brand new iOS 15 feature be the troublemaker ?

edited Sep 10 '21 at 13:30

asked Sep 10 '21 at 12:38

Jonathan F.

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What if you use the ctor that takes a Frame? Or are you using this button in a storyboard? – Cheesebaron Sep 10 '21 at 14:31
@Cheesebaron Yeah it's a button in a storyboard. – Jonathan F. Sep 10 '21 at 14:44
I guess the new version of iOS must be using a different ctor. Try override the other ones and see if that helps. – Cheesebaron Sep 10 '21 at 15:06
@Cheesebaron I tried but problem still here. – Jonathan F. Sep 14 '21 at 08:52
What is your Xamarin.ios version? – Wen xu Li Sep 15 '21 at 09:42

Properties set in the constructor of a custom UIButton class are ignored on iOS15

0 Answers0