Displaying randomized texts in app designer (GUI)

Hello, If you look in the comments. I have also attached my code and a screen shot of what the GUI currently looks like.

I have made an editfield, with different examples of what the text should look like, but the only thing appearing on that tab is the list box. it should be a randomization(from the text i have included in the code) for what text is displayed.

2:

How would i connect the values from the listbox to the actual text (There will be 4 text in total, i am using the randperm to randomize which one is dispalyed on GUI, but only one of those is the correct answer).

I stated that i already have a list box with "YES" and "NO". 3 of the text will always be wrong so the answer should always be NO and 1 will always be right, so the answer should always be YES.

What i am trying to say is ' if the wrong text is displayed and the user anwsers "YES" instead of "NO". How do i tag that as incorrect answer? and vice versa.

I have also attached my code.

Thanks in Advance.

[Jiri Hajek]

Hi, please specify a concrete task that you want to achieve so that we could focus. You can perhaps start from your final question and specify in detail, what does not work as desired.

[Nwasinachi]

Hello,

I need to create a random list of anwsers(text) that will be displayed in a GUI. The user will have to answer yes or no.

There will be 4 answers(text) being randomized, of which one would be the correct anwser,

For the correct one when the user selects yes. it should indicate that they have anwsered the question correctly.

This was my attempt. (it doesnt display in the Edit field).

One of the prompts from the code should be displayed here, but its empty.

% Value changing function: EditField
        function EditFieldValueChanging(app, event)
            changingValue = event.Value;
            firstopt=sprintf('The boy went to school')
            Secoption=sprintf('The man went to church') 
            thoption=sprint('The girl is going there')
            wordarray= {firstopt Secoption thoption};
            Randomization=randperm(length(wordarray));
        end
    end

[Nwasinachi]

@Jiri Hajek Does my explanation make sense?

If not i can edit it.

[Nwasinachi]

I was able to solve the first part.

I left the text area empty.

In the StartFcn i included the display('text").

then i randomized them and it displays a different text in the text area everytime i run the program.

Thanks for your help

[Jiri Hajek]

Your question is not so much about MATLAB, but about an algorithm. There are a great mant ways to do what you want. Starting from where you are, you could perhaps make use of the following MATLAB functions to achieve your goal:

• callback function on your answers, where you could check the user;s choice
• in that callback, you can use the isequal function to compare the displayed string with the correct answer
• Display the answer by assigning a value to the text property of an answering text field

[Nwasinachi]

@Jiri Hajek

Hello,

I have created the call backs, made an array of sentences to be displayed, randomized that array.

Created a correct and incorrect variable, that will check the anwsers based on a strcmp, but the problem now is i dont know if the correct and incorrect variables are working properly.

This is the code

 if strcmp(app.wordarray (1),app.TextArea7_2.Value) && strcmp(app.ListBox2.Value,'YES');
               app .Correct = app.Correct+1;% a loop where if this option is displayed and YES is selected from list box then the response is correct

            else app.Incorrect = app.Incorrect+1;
           end  

These are variables in the startfcn

    %attempt for text area Question 1
          app .Correct=0;
           app.Incorrect=0;

                       
firstopt = 'The boy went to school'; % will change text and number of the
Secoption = 'The man went to church';
thoption = 'The girl is going there';
app.wordarray = {firstopt Secoption thoption};
app.TextArea7_2.Value = app.wordarray{randi(numel(app.wordarray))}; %% randomization works. 

This is the public property

      properties (Access = public)
        wordarray % Description
        Correct
        Incorrect
      
        end

Answer 1

[Divyanshu]

The possible workaround for the issue faced is you can have an edit field which indicates “correct” or “incorrect” to the App-user depending upon the response. And you can “disable” or “enable” the Next button depending upon the value of response indicating field.

Here is a demo App which demonstrates the same->

Note: I have written logic which is going to randomly display one of the three sentences -> [“How are you?", "Hi Jane", "Please call me”].

And the correct response is -> “Hi Jane”

Here is the code-view of the demo App->

methods (Access = private)
    % Code that executes after component creation
    function startFunctn(app)
        sentenceList = ["How are you?" "Hi Jane" "Please call me"];
        index = randi(3);
        app.SentencementioneintheAudioyoujustheardTextArea.Value = sentenceList(index);
        set(app.NextButton,'Enable','off');
        app.check();
    end

    % Value changed function: ListBox
    function check(app, event)
        app.StatusofyourResponseEditField.Value = "";
        value = app.ListBox.Value;
        if(value == "Yes" && app.SentencementioneintheAudioyoujustheardTextArea.Value == "Hi Jane")
            app.StatusofyourResponseEditField.Value = "Correct";
        elseif(value == "No" && app.SentencementioneintheAudioyoujustheardTextArea.Value ~= "Hi Jane")
            app.StatusofyourResponseEditField.Value = "Correct";
        else
            app.StatusofyourResponseEditField.Value = "Incorrect";
        end
        if(app.StatusofyourResponseEditField.Value == "Correct")
            set(app.NextButton,'Enable','on');
        else
            set(app.NextButton,'Enable','off');
        end
    end
end