MATLAB: Repeat audio button in GUI

Question

Hi all! I need to perform a listening test, there are 2 buttons in my GUI: 1. PLAY AUDIO: user listens to 20 wav files one by one. 2nd button: REPEAT AUDIO user should be able to repeat audio max 3 times, no more. I have a problem with programming 2nd button. This is the code for PLAY AUDIO button:

   % --- Executes on button press in PLAYAUDIObutton.
  function PLAYAUDIObutton_Callback(hObject, eventdata, handles)
  % hObject    handle to PLAYAUDIObutton(see GCBO)
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)
  global playList FiletoPlay fileCounter
    if fileCounter < 21                               %total number of audio files
     FiletoPlay = playList{1, fileCounter};        %select 1st wav file from playList
     [FiletoPlay, Fs]=wavread(FiletoPlay);           %Import and play file
     handles.audio = audioplayer(FiletoPlay,Fs);
     play(handles.audio);
  end
  if fileCounter == 21
     msgbox('Test is finished. Thank you for your participation!');
  end
  fileCounter = fileCounter + 1;
  guidata(hObject,handles);

This is the code for REPEAT AUDIO button, here I used counter, but it valid only for 1 audio file (after listening to the 1st audio, user able to repeat it max 3 times):

global times_pushed
    times_pushed = times_pushed + 1;
    play(handles.audio);
    if times_pushed == 4
    errordlg('Warning: You exceeded number of repetitions.');
    end    
guidata(hObject,handles);

So, the question is, how to make the limitation on repeating for 20 audio files ??? Thank you in advance!!

Answer 1

In your PLAYAUDIO function, add times_pushed as global:

function PLAYAUDIObutton_Callback(hObject, eventdata, handles)
  % hObject    handle to PLAYAUDIObutton(see GCBO)
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)
  global playList FiletoPlay fileCounter times_pushed
....
....
And reset it for each new audio file
times_pushed = 0;

Keep the code if it works