app designer switch problem

Question

Dick 2024-3-27

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2099616-app-designer-switch-problem

评论： Dick 2024-3-27

Hello community!

I want to use a switch to control the UI theme, like light mode and dark mode. But I can only switch it once, the second time I click, no response. Here are the codes:

% Value changed function: Switch2

function Switch2ValueChanged(app, event)

value = app.Switch2.Value;

if value

app.UIFigure.Color = [0.5, 0.5, 0.5];

else

app.UIFigure.Color = [1, 1, 1];

end

related photos, before I click:

after I click:

However, it can only work once. Can you help me, please?

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Answer 1

Kojiro Saito 2024-3-27

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2099616-app-designer-switch-problem#answer_1432086

在 MATLAB Online 中打开

Items property of app.Switch2 is 'On' and 'Off' in this app, so you need to change the if condition to value == "On".

function Switch2ValueChanged(app, event)
    value = app.Switch2.Value;
    if value == "On"
        app.UIFigure.Color = [0.5, 0.5, 0.5];
    else
        app.UIFigure.Color = [1, 1, 1];
    end
end