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

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Ron 2022-9-15

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评论： Ron 2022-9-19

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

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Konrad 2022-9-15

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 2022-9-15

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

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Answer 1

Konrad 2022-9-15

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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