Can I navigate between Edit Fields using keyboard arrow keys in MATLAB App Designer after running the app? Does anyone know the codes.?

I don't know how to start with this.

Answer 1

[Dinesh]

Hi Subathra,

MATLAB App Designer does not support keyboard navigation between Edit Fields by default. However, you can create custom key press callbacks to enable this. Assign a 'KeyPressFcn' to the UIFigure and use 'focus' within the callback to set the focus to the desired field based on the key pressed.

The following is an example for right arrow navigation:

app.UIFigure.KeyPressFcn = @(src, event) switchKey(event);

function switchKey(event, app)
    if strcmp(event.Key, "rightarrow")
        editFields = {app.EditField1, app.EditField2, app.EditField3}; % List of all edit fields in order
        currentField = app.UIFigure.CurrentObject; % Get the active field        
        currentIndex = find(editFields == currentField);        
        nextIndex = mod(currentIndex, numel(editFields)) + 1; % Get the index of the next edit field
        focus(editFields{nextIndex}); % Set focus to the next edit field
    end
end

Similarly, you can implement for other arrow keys.

The following link is the documentation for the "KeyPressFcn" callback of "uifigure":

https://www.mathworks.com/help/matlab/ref/matlab.ui.figureappd-properties.html

The following link is the documentation of "focus":

https://www.mathworks.com/help/matlab/ref/matlab.ui.figure.focus.html