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Using Delphi 10.4.1

Buttons, when set to Invisible, will hide in iOS. However, the same buttons will not hide in iPadOS 14.4.

Similarly, the text on a TLabel will not refresh automatically when updated.

However, when I click the iPad button (iPad Air), and re-show the iPad app, all the changes that were supposed to be made show up!

I've tried TControl.Repaint() and even the inefficient Application.ProcessMessages(). Both do not work.

Any suggestion?

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    A minimal reproducible example would help Commented Feb 19, 2021 at 21:05
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    @DaveNottage was about to work on an example, then found the solution as below. Thanks for replying. Commented Feb 20, 2021 at 11:44

1 Answer 1

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After final testing on a simple project, I concluded that:

  • this issue does not exist in a simple project

If I'm able to replicate this issue again in a simple project, I'll update again.

  • however, if you experience this in a bigger complex project instead of placing the controls on a TToolbar, it may cause this problem of not updating the controls (whether setting the text or hiding it). My solutino is: do not use TToolbar if deploying to iPad. iPhone works fine.

Note this happens on iPad but not iOS for some strange reason.

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3 Comments

After further testing with a simple example, it's in my bigger project that this happens. :( for a project with simple Toolbar etc, it does not happen. Shall I remove my answer?
I'd rather you edit (or remove, if it's a mistake) the answer once you find out what the problem is :-)
Noted, I've updated as per actual experience.

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