How to save and load all the states of checkboxes and etc

Helllo ,

I'm trying to save and load usin the save() and load() functions , the second argument is the "variables" , if I want to save 30 variables it means i have to staticly write all of them in save and load functions , is there any other way to save ALL of the variables and load all of them? i mean i want to make few configurations by names , firstConfiguration.mat , secondConfiguration.mat , and when i load them , instantly it loads the checkboxes that there is in the configuration

[Stephen23]

"is there any other way to save ALL of the variables and load all of them?"

Specifying the variable names is optional: if you do not specify any variable names then SAVE will save all variables from the calling workspace. You might also find the -REGEXP syntax useful.

[Ron]

Hey again !

Well , i dont want to save all the workspace , i would like to save all the states of the checkboxes and edit fields.

i'm not sure REGEX will help me in this

[Konrad]

Hi Ron,

are you using the App Designer to create a GUI? And you want to load the state of your GUI components (like checkboxes) from a file?

[Ron]

Yes, I want to save all the states for a file , and be able to load it (but i want all of them and not some specific).

Obviously when i say save and load I mean , for the same GUI and not mixing 2 different gui's

Answer 1

[Konrad]

Hi Ron,

here is something I recently used in an App Designer GUI:

The App needs a property 'config' and the following method to store the UI-state in the 'config' property:

function storeUIpropConfig(app, source, property, value)
    % find object name
    p = properties(app);
    k = cellfun(@(x)isequal(app.(x),source),p);
    if sum(k)~=1
        warning('Could not store UIproperty in app config. Callback source not found in app properties!');
        return;
    end
    app.config.UIproperties.(p{k}).(property) = value;
end

Let's assume the figure handle is stored in the app property 'UIFigure'. Then you can find all checkboxes and edifields with

h = findobj(app.UIFigure,'Type','uieditfield','-or',...
    'Type','uinumericeditfield','-or',...
    'Type','uicheckbox');

and use the method above to store the 'Value' property of the ui objects in the config property:

for k = 1:numel(h)
    app.storeUIpropConfig(h(k),'Value',h(k).Value);
end

You can also use the ValueChangedFcn callback of the ui-objects to call that method each time the 'Value' changes.

Then save the config to disk:

cfg = app.config.UIproperties;
save('config.mat','-struct','cfg');

To load the config use:

app.config.UIproperties = load('config.mat');

and then run the following method to set the state of the UI objects:

function restoreUIpropConfig(app)
    obj = fieldnames(app.config.UIproperties);
    for io = 1:numel(obj)
        o = obj{io};
        props = fieldnames(app.config.UIproperties.(o));
        for ip = 1:numel(props)
            p = props{ip};
            try
                app.(o).(p) = app.config.UIproperties.(o).(p);
            catch ME
                app.config.UIproperties.(o) = rmfield(app.config.UIproperties.(o),p);
                warning('Failed to restore property value for %s.%s because:\n%s',o,p,ME.message);
            end
        end
    end
end

Let me know if you need more help.

Best, Konrad

[Konrad]

PS: Note that the methods could be simplified if you always only want to store the 'Value' property of the UI-objects.

[Ron]

Well , that's work perfect!!! . Thank you very much.

How would you suggest me to get the "radio button group" values? because the group dont have the value , each of the radio buttons have, so how would i get access to each of them?

[Konrad]

You have to set the 'Value' property of the radio buttons; no need to touch the ButtonGroup. You can find the object handes with

h = findobj(app.UIFigure,'Type','uiradiobutton');

[Konrad]

You can also simply find all objects in your app that have a 'Value' property and store/restore these:

h = findobj(app.UIFigure,'-property','Value')

[Ron]

Well that's work perfect!

Thank you very much.

Answer 2

[Image Analyst]

See the Official Mathworks support answer: https://www.mathworks.com/matlabcentral/answers/523768-how-to-save-restore-state-of-app-designer-app?s_tid=ta_ans_results