Hello Michael,
It appears that you're encountering an issue with the 'uidropdown' control in MATLAB R2023a,
I use the same version and attempted to reproduce the problem using a simplified example. Here are the steps I followed and the code that worked correctly for me, returning the numerical ID as expected:
1.Added the startupFcn:
- In the Component Browser, click on the app node.
- In the right-hand pane, scroll down to the "Callbacks" section and click on "Add StartupFcn". This will create a new function called startupFcn.
function startupFcn(app)
% Define the Methods.TYPES cell array
Methods.TYPES = {
'Method1', 1;
'Method2', 2;
'Method3', 3;
};
% Set the items and items data for the dropdown
app.MethodDropDown.Items = Methods.TYPES(:, 1);
app.MethodDropDown.ItemsData = [Methods.TYPES{:, 2}];
end
2. I inserted a button to retrive the value and added a callback to it.
% Button pushed function: RetrieveValueButton
function RetrieveValueButtonPushed(app, event)
selectedValue = app.MethodDropDown.Value;
% Display the selected value
disp(selectedValue);
end
you can refer to this MathWorks documentation to know more : uidropdown
