MATLAB: App designer ui table drop down selection

app designerdrop down menuMATLABuitable

Hi,

How can I make cells inside App Designer UITable selectable via drop down menu only but not editable as string?

i.e. I need to limit the possible values of these cells using drop down selection to a list of categorical array, and not letting user type whatever they want.

Thanks

Best Answer

Hi Jimmy,

You can achieve this by making your categorical array protected. Example:

B = categorical(A, 'Protected', true)

This will protect your drop-down menu from edits.

Full implementation of an example:

fig = uifigure;
myData = {'Andrew' 31 'Male'; ...
    'Bob' 41 'Male';  ...
    'Anne' 20 'Female';};
myData = cell2table(myData, 'VariableNames', {'Name', 'Age','Gender'});
myData.Group = categorical({'Group 1'; 'Group 2'; 'Group 3'}, 'Protected', true);
uit = uitable('Parent', fig, ...
    'Position', [100 150 380 100], ...
    'ColumnEditable',true, ...
    'Data',myData);

Related Solutions

MATLAB: How to have ‘dropdown’ in every cell of a table in App Designer

Yes, UITable is a leaf component and does not have any child. The 'Data' property is the only property to set tabular data in UITable. Currently drop down menus in UITable is supported using the 'ColumnFormat' property.

In the App Designer startup function:

app.UITable.Data = {'female';'male';'male'}; % have 3 rows of gender information.
app.UITable.ColumnFormat = {{'male', 'female'}}; % have option cell array within ColumnFormat property to indicate the 1st column is using dropdown menus.
app.UITable.ColumnEditable = true;

More information can be found in UITable 'ColumnFormat' property in MATLAB Documentation

https://www.mathworks.com/help/matlab/ref/matlab.ui.control.tableappd-properties.html#bvboy7l-1-ColumnFormat

MATLAB: Using Matlab App Designer with 2 Dependent Pop Up Menus

You can do this by using a callback on changinge the value in your first drop down. All the magic is done in

function DropDown1ValueChanged(app, event)

Here you go:

classdef app1 < matlab.apps.AppBase
    % Properties that correspond to app components
    properties (Access = public)
        UIFigure          matlab.ui.Figure
        DropDown2_2Label  matlab.ui.control.Label
        DropDown2_2       matlab.ui.control.DropDown
        DropDown1Label    matlab.ui.control.Label
        DropDown1         matlab.ui.control.DropDown
    end
    methods (Access = private)
        % Value changed function: DropDown1
        function DropDown1ValueChanged(app, event)
            value = app.DropDown1.Value;
            switch value
                case "California"
                    app.DropDown2_2.Items = {'San Diego', 'Sacaramento', 'Irvine'};
                case "Texas"
                    app.DropDown2_2.Items = {'Austin', 'Dallas', 'Houston'};
            end
                    
        end
    end
    % App initialization and construction
    methods (Access = private)
        % Create UIFigure and components
        function createComponents(app)
            % Create UIFigure
            app.UIFigure = uifigure;
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'UI Figure';
            % Create DropDown2_2Label
            app.DropDown2_2Label = uilabel(app.UIFigure);
            app.DropDown2_2Label.HorizontalAlignment = 'right';
            app.DropDown2_2Label.Position = [370 287 69 22];
            app.DropDown2_2Label.Text = 'DropDown2';
            % Create DropDown2_2
            app.DropDown2_2 = uidropdown(app.UIFigure);
            app.DropDown2_2.Items = {'San Diego', 'Sacaramento', 'Irvine'};
            app.DropDown2_2.Position = [454 287 100 22];
            app.DropDown2_2.Value = 'San Diego';
            % Create DropDown1Label
            app.DropDown1Label = uilabel(app.UIFigure);
            app.DropDown1Label.HorizontalAlignment = 'right';
            app.DropDown1Label.Position = [97 287 69 22];
            app.DropDown1Label.Text = 'DropDown1';
            % Create DropDown1
            app.DropDown1 = uidropdown(app.UIFigure);
            app.DropDown1.Items = {'California', 'Texas'};
            app.DropDown1.ValueChangedFcn = createCallbackFcn(app, @DropDown1ValueChanged, true);
            app.DropDown1.Position = [181 287 100 22];
            app.DropDown1.Value = 'California';
        end
    end
    methods (Access = public)
        % Construct app
        function app = app1
            % Create and configure 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

Greetins Stefan

Best Answer

Related Solutions

MATLAB: How to have ‘dropdown’ in every cell of a table in App Designer

MATLAB: Using Matlab App Designer with 2 Dependent Pop Up Menus

Related Question