Issue with Matlab Widget toolbox: ListSelector call back is exectued twice

I am using the widget ListSelector from: Widgets Toolbox - App Designer and Advanced App Components - File Exchange - MATLAB Central

I have created the following app as a demonstration:

classdef debugListSelector < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure      matlab.ui.Figure
        ListSelector  wt.ListSelector
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Callback function: ListSelector
        function ListSelectorButtonPushed(app, event)
           
            disp("executing action")
            
        end
    end

    % Component initialization
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'MATLAB App';

            % Create ListSelector
            app.ListSelector = wt.ListSelector(app.UIFigure);
            app.ListSelector.AddSource = 'ButtonPushedFcn';
            app.ListSelector.ButtonPushedFcn = createCallbackFcn(app, @ListSelectorButtonPushed, true);
            app.ListSelector.Position = [149 75 232 282];

            % Show the figure after all components are created
            app.UIFigure.Visible = 'on';
        end
    end

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = debugListSelector

            % Create UIFigure and components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end

I have no idea how to fix this

Answer 1

[Hitesh]

Hi @Sylvain,

I too encountered the same issue. The workaround that worked for me was to update Widgets Toolbox - App Designer and Advanced App Components - File Exchange - MATLAB Central version to 2.4.2.

For more information regarding "Widgets Toolbox File Exchange". Kindly refer to following discussion section:

https://www.mathworks.com/matlabcentral/fileexchange/83328-widgets-toolbox-app-designer-and-advanced-app-components