Remove programmatically added checkboxes and replace them with new checkboxes
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I am working on an app that dynamically adds checkboxes based on the data loaded to a panel. I want to replace the checkboxes with new checkboxes with different names depending on the file I load.
The data loaded here are the names of the files in a given folder to populate a set of checkboxes, whose number can vary.
How do I then remove the checkboxes when I load a different set of files?
names=dir('*train*.mat');% identify files with 'train' in name
r={names(:).name}.'; % Create an cell structure of names
StrErase=["Train","Validation","train","validation","ing"]; % erase parts of the string
% Load Posture data and names
for i=1:length(r)
str=replace(erase(r(i),".mat"),'_',' '); % remove the file extension from the name
app.Postcbx{i}=uicheckbox('Parent',app.PosturesPanel,"Value",1,'Position',...
[10 (330-20*i) 150 15],'Text',erase(str,StrErase)); % Create the checkboxes
end
采纳的回答
names=dir('*train*.mat');% identify files with 'train' in name
r={names(:).name}.'; % Create an cell structure of names
StrErase=["Train","Validation","train","validation","ing"]; % erase parts of the string
n_old = numel(app.Postcbx);
n_new = numel(r);
if n_old > n_new
% delete any old checkboxes you don't need
delete([app.Postcbx{n_new+1:n_old}]);
app.Postcbx(n_new+1:n_old) = [];
elseif n_old < n_new
% create any new checkboxes you need
for i = n_old+1:n_new
app.Postcbx{i}=uicheckbox('Parent',app.PosturesPanel);
end
end
% update the Position, Text, and Value of all checkboxes
for i = 1:n_new
str=replace(erase(r(i),".mat"),'_',' '); % remove the file extension from the name
app.Postcbx{i}.Position = [10 (330-20*i) 150 15];
app.Postcbx{i}.Text = erase(str,StrErase);
app.Postcbx{i}.Value = 1;
end
3 个评论
Stephen
2022-5-5
Thank you for your help. I used the code you suggested, however the text did not update the way I hoped.
I was able to use the delete function to erase the previous list and replace it with a whole new list.
Perhaps those checkboxes that persisted were not stored in app.Postcbx? Hard to say without seeing more of the app code.
In general, it should be feasible to delete/create objects as needed, without having to delete all and then create a new set each time the set changes.
EDIT: Actually, I just made a modification to my answer. Try it like it is now, and see if that works, if you're still planning to use checkboxes as opposed to some other type of component.
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