How can I programmatically select multiple choices from a uilistbox?

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Joseph Pawlowski
Joseph Pawlowski 2019-5-15
编辑： Monika Jaskolka 2020-10-7
I have an App Designer app containing a uilistbox that has both the 'Items' and 'ItemsData' properties specifed.
When my users close the app, I use setpref() to keep a persistent record of which values were selected in the uilistbox.
% Save user preferences
setpref('dddPrefs', 'ReportHeaderFields', app.ReportHeaderListBox.Value);
in the startupFcn method of the app, I use getpref() to grab the values that were previously selected in the uilistbox. The preferences aspect works fine. I can display the selected values in a message box, for example.
However, when I try to use the persistent preference value to reselect the appropriate items from the ullistbox, I cannot select more than one programatically. If I only select one value from the uilistbox and restart the program, that same value is indeed selected when I reopen. However, if I select multiple options and restart the program, the uilistbox appears to have no items selected.
% Read in preferences
app.ReportHeaderListBox.Value = getpref('dddPrefs', 'ReportHeaderFields');
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Joseph Pawlowski
Joseph Pawlowski 2019-5-15
Geoff,
I ran my app and selected manually from the GUI five items within the uilistbox. I then closed my app and in the command window, I ran the following command, which gives me a 1x5 cell array.
getpref.PNG
Monika Jaskolka
Monika Jaskolka 2020-10-7
编辑：Monika Jaskolka 2020-10-7
Just wanted to say that I also have this issue. It tried the following code to incrementally select the items one-by-one, and it doesn't work. If I add a breakpoint and step through the code, it works just fine. Also, if I attempt to multi-select programmatically (which doesn't select anything), it then prevents me from subsequently multi-selecting via the GUI (shift+select).
for i = 1:length(perferenceVal)
app.ListBox.Value{end+1} = perferenceVal{i};
drawnow;
end

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Joseph Pawlowski
Joseph Pawlowski 2020-1-2
It looks like whatever this issue was, it is no longer an issue in R2019b.

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