How can I put a javacomponent in the app designer?

In app designer, I tried to put checkbox created by 'com.jidesoft.swing.CheckBoxList'. but I can not settle it on app.UIFigure.

The code is

classdef test < matlab.apps.AppBase
        % Properties that correspond to app components
        properties (Access = public)
            UIFigure  matlab.ui.Figure
        end
        methods (Access = private)
            % Code that executes after component creation
            function startupFcn(app)
                items = {'1','2','3','4','5','6','7','8','9'};
                jCBList = com.jidesoft.swing.CheckBoxList;
                jCBList.setModel(javax.swing.DefaultListModel);             
                jCBList.setSelectionMode(0);              
                jScrollPane = com.mathworks.mwswing.MJScrollPane(jCBList);
                javacomponent(jScrollPane, [50,200,100,100], app.UIFigure);
                for i=1:size(items,2)
                    jCBList.getModel.addElement(items{1,i});
                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';
            end
        end
        methods (Access = public)
            % Construct app
            function app = test
                % Create and configure components
                createComponents(app)
                % Register the app with App Designer
                registerApp(app, app.UIFigure)
                % Execute the startup function
                runStartupFcn(app, @startupFcn)
                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

The Panel is

Error is like this

Error using hgjavacomponent
Functionality not supported with figures created with the uifigure function. For more information, see Graphics Support in
App Designer.

Error in javacomponentdoc_helper

Error in javacomponentdoc_helper

Error in javacomponent (line 95)
[hcomponent, hcontainer] =  javacomponentdoc_helper(varargin{:});

Error in test/startupFcn (line 19)
            javacomponent(jScrollPane, [50,200,100,100], fig);

Error in test (line 52)
            runStartupFcn(app, @startupFcn)

Error using hgjavacomponent
Functionality not supported with figures created with the uifigure function. For more information, see Graphics Support
in App Designer.

Error in javacomponentdoc_helper

Error in javacomponentdoc_helper

Error in javacomponent (line 95)
[hcomponent, hcontainer] =  javacomponentdoc_helper(varargin{:});

Error in test/startupFcn (line 19)
            javacomponent(jScrollPane, [50,200,100,100], app.UIFigure);

Error in test (line 52)
            runStartupFcn(app, @startupFcn)

Is there a way to apply javacomponent into app designer?

Answer 1

[Yair Altman]

Java components are not supported by AppDesigner or uifigures. This is not a temporary limitation - it is a fundamental outcome from the radically different technology of uifigures (browser webpages that display HTML and JavaScript components) compared to legacy figures (which where essensially Java windows and so could contain Java components). Because of this, this limitation is not expected to be resolved. EVER. You will need to find a non-Java component to fit your needs in AppDesigner/uifigures. Unfortunately, there is no simple replacement for the CheckBoxList that I am aware of. You might try to find a JavaScript component that implements this and then add it to the uifigure using the new uihtml function (R2019b). Alternatively, you could use javacomponent in a legacy figure, but note that this is expected to stop working in some not-too-distant future Matlab release.

[Hassan]

Dear Yair;

I am using your example to make multi-color texts in figures. Now I understand that this example is not implemented in a UIFigure of UILabel. Do you have a workaround to make to add multiple colors to a text output?

Thanks, HM

[Yair Altman]

if you use R2019b or newer, you can use the uihtml function to embed custom HTML code (including multi-color text labels) in uifigures

Answer 2

[Ivan Qin]

I have the same question. I put the call to javacomponent in the app Construct section and it did not work either.

Anybody has idea?