app will dispear when using uisetcolor as colorpicking function

2022 7 12
1 个回答
更新时间：2022 11 28
9 次查看（30 天）

0 个投票

Hi everyone,
I am using app desinger to creat a simple app. the function that I am working on is assign RGB value to a table by uisetcolor function. The code is listed as below:
function ColorPickerButtonPushed(app, event)
app.UITable2.Data = uisetcolor;
figure(app.UIFigure)
end
The app would go to backgroud if I try to run this button within matlab. If I export the code into a seperate app, it could disappear if I click this button. Thank you very much for any suggustion.

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回答（1 个）

Adam Danz
Adam Danz 2022-7-12
编辑：Adam Danz 2022-7-13

0 个投票

uisetcolor is a modal dialog meaning it blocks interaction with other windows until the user closes it. After the dialog is closed, focus should return back to your app. There is no way to make uisetcolor non-modal.
I didn't understand the second proposal in your question regarding exporting the code (which code?) and something disappearing.
update: Note that in R2021a there is a known bug that causes the crash with compiled apps when using uisetcolor. This bug was fixed. See this answer for more info.

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Jian Yu
Jian Yu 2022-7-13
Hi Adam,
Thank you so much for your reply. The problem with uisetcolor is it will go to backgroud if I use this fuction. I could use figure(app.UIFigure) to get focus back in matlab. However, if I use matlab compiler to export this app as a standalone desktop app, the app will just disapear after using uisetcolor function. It seems it's a bug of matlab.
Adam Danz
Adam Danz 2022-7-13
I wasn't aware that your app was compiled.
I see you are using MATLAB R2021a. This is a known bug in 21a that was fixed with update #2 (or in any later releases). See more info. Update your 21a release or download a newer release.
Jian Yu
Jian Yu 2022-7-13
Thank you Adam for the detailed answer. I have also seen the same anwser. I upgraded matlab to 2022 but still not working. I guess the bug is still not solved.
Varun Pai
Varun Pai 2022-11-24
@Adam Danz
I have a MATLAB 2021b Linux CentOS7 application. 'uisetcolor' behaves non-modal. Is it a known bug ?
Adam Danz
Adam Danz 2022-11-28
@Varun Pai, thanks for the comment. Yes, that sounds like a bug.
Please contact tech support and include the release and OS indicated in your message above.

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R2021a

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提问:

Jian Yu
Jian Yu
2022-7-12

评论：

Adam Danz
Adam Danz
2022-11-28

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