[App designer] Update text area or edit field with uigetfile (filename)

I have a simple code to call a file using uigetfile

And I would like to show the selected filename in the TextArea or EditField.

So far I've tried this way,

but seems to me that the TextArea or EditField is not updating after the selection.

So I've been trying to use just simple text like 'asd' or 'aaa' to test the code, but even these do not show in the text area!

I've been frustrated with this for several hours to find the solution.

Please HELP~

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

        % Callback function: BrowseButton, SelectJDataTextArea
        function BrowseButtonPushed(app, event)
            clc
            clear
            [app.dirs, app.dt] = uigetfile('*.csv*','Select data file # 1','E:\directory');
            if length(app.dirs) == 0
                app.SelectDataTextArea.Value = 'asd';
                drawnow;
            else
                app.SelectDataTextArea.Value = 'aaa';
                drawnow;
            end            
        end

Answer 1

[Cris LaPierre]

What error messages are you getting when you run your code? Please share all the red text.

Remove the clc and clear from inside your callback. That wipes out your function inputs. The drawnows also aren't necessary. You can remove them, too.

Look in the Component Browser to confirm that your text area is named app.SelectDataTextArea. If not, update your code to use the correct name. And just to be clear, the first output of uigetfile is the filename. The second is the path.

% Callback function: BrowseButton, SelectJDataTextArea
function BrowseButtonPushed(app, event)
    [app.dirs, app.dt] = uigetfile('*.csv*','Select data file # 1','E:\directory');
    if length(app.dirs) == 0
        app.SelectDataTextArea.Value = 'asd';
    else
        app.SelectDataTextArea.Value = 'aaa';
    end            
end

[Baejung Kim]

I do not get any error messages, except I just do not see the edit field being updated at all.

The code itself seems to be fine.

It's just the output is not what I expected, Text area and edit field being empty....

[Baejung Kim]

Plus, the SelectDataTextArea is correct, I just took out the "J" inbetween for the sake of asking the quesiton.

% Callback function: BrowseButton, SelectDataTextArea
function BrowseButtonPushed(app, event)
    [app.dirs, app.dt] = uigetfile('*.csv*','Select data file # 1','E:\directory');
    if length(app.dirs) == 0
        app.SelectDataTextArea.Value = 'asd';
    else
        app.SelectDataTextArea.Value = 'aaa';
    end            
end

[Cris LaPierre]

Perhaps I don't understand what the question is, then. Do you need help adapting the TextArea code to work for an Edit Field?

[Baejung Kim]

Maybe the question was too vague,

Purpose: file name to appear in the textarea / edit field area upon file is selected by clicking [Browse] button

Problem: The code of adding value to the app.SelectJDataTextArea.Value seems to be not doing the trick.

function BrowseButtonPushed(app, event)
    [app.dirs, app.dt] = uigetfile('*.csv*','Select data file # 1','E:\directory');
    app.SelectJDataTextArea.Value = char(app.dirs);
    

So basically nothing happens in the app window without any errors.

[Cris LaPierre]

The code I shared in my first post works in an app I created provided the following

1. You use a text area
2. The text area is named SelectDataTextArea
3. The button is named BrowseButton
4. To display the selected filename, replace 'aaa' with app.dirs (no quotes, no converting the char or string)