Edit Field Box Values in matlab app designer are not updating.

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Michail Kanoupakis 2020-11-17

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https://ww2.mathworks.cn/matlabcentral/answers/650643-edit-field-box-values-in-matlab-app-designer-are-not-updating

评论： Image Analyst 2025-5-2

I am buildling a GUI app through Matlab app designer but despite the change of the EditFieldBox.Value the value is not updating, so when I am running a .m file through the .mlapp the values that are being loaded to the file are the default values of the edit field box.

I would like the program to behave like that... when I'm pressing the button "Run" of the app and the pop up "UI Figure" window appears, the values that I put/change on the edit field boxes to be passed as a parameter to the .m file (and not passing the default values of the edit field boxes that are already there).

for example some of my parameters in the .m file are these :

fmin = myApp.fminEditField.Value; %high pass filtering frequency

fmax = myApp.fmaxEditField.Value; %low pass filtering frequency

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Zakary Woodley 2022-7-27

So, how did you do it?

Michael 2022-8-27

yes.. how did you do this?

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回答（1 个）

Divyam 2025-5-2

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Hi @Michail Kanoupakis,

To ensure that you pass the updated values to the '.m' script, you need to read the values of the components inside the callback function and then pass these values to the function in your '.m' script. Here is some sample code to help you with the same:

% Button pushed function: RunButton 
function RunButtonPushed(app, event) 
    fmin = app.fminEditField.Value; 
    fmax = app.fmaxEditField.Value; 
    % Now call your .m file function, passing these values 
    % For example, if your .m file is a function: 
    myMATLABFunction(fmin, fmax); 
end

If you try to read the values of the components from the base workspace or from the app object outside the callback, you will only get the default value for that component.