Play/Stop Music in GUI with dropdown (separate buttons)

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aburl
aburl 2019 年 11 月 7 日
Hi there,
I'm trying to create a GUI that has a dropdown menu to select between different audio files that will then use an audioplayer object to play/stop these files using play/pause/stop pushbuttons. This worked using sound(), but I want to pause/stop. I know that audioplayer disappears if it's empty.
Here's the relevant GUI code:
fighandl=figure; % create a figure and a "handle" to it
set(fighandl,'Name','QuickSIN'); % access handle, give fig a name
set(fighandl,'UserData','start');
set(fighandl, 'units', 'normalized', 'position', [0.15 0.15 0.7 0.7])
handles = guihandles(fighandl);
%dropdown menu (only working on getting 'Practice 1' working now)
handles.quickSIN = uicontrol(fighandl,'Style','popupmenu',...
'Units','Normalized',...
'Position',[0.05 0.65 0.2 0.3],...
'FontSize',15,...
'String',{'Practice 1','Practice 2','Practice 3','List 1','List 2','List 3','List 4','List 5','List 6'});
handles.push2=uicontrol('Style','pushbutton',...
'String','4',...
'FontSize',140,...
'FontName','Marlett',...
'FontWeight','bold',...
'Units','Normalized',...
'Position',[0.75 0.65 0.2 0.3],...
'BackgroundColor',[0.62352941176, 0.3725490196, 0.62352941176],...
'ForegroundColor','white',...
'Callback',@play_Callback);
Here's the relevant parts of the callback function:
function play_Callback(play, eventdata, handles)
% hObject handle to pushbutton1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
handles = guidata(gcf);
persistent AP;
%note for this - create audioplayer object
if handles.quickSIN.Value == 1
[y,Fs] = audioread('audiofile1.wma');
AP = audioplayer(y,Fs);
play(AP);
elseif handles.quickSIN.Value == 2 %and so on with other values
[y,Fs] = audioread('audiofile2.wma');
AP = audioplayer(y,Fs);
play(AP);
end
I've tried to create an audioplayer function that the if statement calls, but that didn't work well for me either.
Maybe I'm thinking about this the wrong way?
Andrew

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