How to create a callback for radio buttons

I have a group of radio buttons with 3 choices (app.mode1, app.mode2, and app.mode3) in app-designer. When a user clicks one of the radio buttons, I want the name of a separate button to be changed to something else. For example: mode 1: "load", mode 2: "plot", mode 3: "display". I'm able to create a call back for the group of radio buttons as below:

function modeSelectionChanged(app, event)
         selectedButton = app.mode.SelectedObject;
            
  
        end
end

But I have no idea as to how to write the following codes. Would someone please help me out?

Many thanks!

Answer 1

[Cris LaPierre]

Assuming your button has the name app.Button, and your radio buttons are labeled 'Mode1', 'Mode2', and 'Mode3', something like this

% Selection changed function: Mode
function ModeSelectionChanged(app, event)
    selectedButton = app.Mode.SelectedObject;
    switch selectedButton.Text
        case 'Mode1'
            app.Button.Text = "Load";
        case 'Mode2'
            app.Button.Text = "Plot";
        case 'Mode3'
            app.Button.Text = "Display";
    end
    
end

[Leon]

Many thanks!

I just tried it, but it does not do anything. At the same time, there is no error of any sort.

[Cris LaPierre]

What are you expecting it to do?

When I tested it, it changes the displayed text on app.Button based on the selection of the radio buttons. Again, you must label your buttons 'Mode1', etc for it to work.

[Leon]

That was indeed the problem!

I had the previous issue because I was using selectedButton.Text, but in my cases, they were the Values. Now it is working.

Many thanks!

[Eric]

Apologies for necromancing the thread. I don't fully understand how the solution involving values works. It is my understanding that selectedButton is a button object. For radio buttons, button.Value is either 0 or 1. My confusion is regarding how selectedButton.Value works in the example since it is now corresponding to the index of the button rather than the Boolean value?

[Cris LaPierre]

You are correct. A button can only have a value of 0 or 1. If there are more than 2 butttons, you cannot use value to determine which button has been selected.