How to save and load App Designer app state in between sessions

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I've seen similar questions about how to save/load variables from an app, but I couldn't find a way to save the state of my app (including all variables, all states of edittexts, etc) when the app is closed, and loading it when it's started. I tried the following code, with no luck. I thought that by just giving a name to the file it would by default save everything, but when I try to access the file just saved I get the app with the same structure as the previous, but all properties have: The variable app.something does not exist. Also, how can i clear all properties values and set everything to the state the app would be if no file was loaded?
function startupFcn(app)
try
load('tccworkspace.mat');
catch
return;
end
end
function ElementosUIFigureCloseRequest(app, event)
delete(app);
save('tccworkspace.mat');
end
  2 Comments
Israel Solha
Israel Solha on 18 Jun 2019
I noticed that mistake shortly after posting. Unfortunately, changing the order didn’t help, as I’ve explained in my reply to the other answer.

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Answers (1)

Dennis
Dennis on 18 Jun 2019
You should load your .mat file into a structure, and pass that structure to other functions.
S=load('tccworkspace.mat');
You can set S to a property of your app to access it in other functions.
  5 Comments
Gabriel Arthur
Gabriel Arthur on 20 Jul 2020
I wrestled with this issue for a while as well, I think I've got a work-around.
I only cared about the value and visibility of each app property, so that what I save and load.
function SaveButtonPushed(app, event)
props = properties(app);
values = cell(1, length(props));
visibilities = cell(1, length(props));
for i = 1:length(props)
propName = props{i};
property = app.(propName);
if isprop(property, 'Value')
values{i} = app.(propName).Value;
end
if isprop(property, 'Visible')
visibilities{i} = app.(props{i}).Visible;
end
end
file = uiputfile('*.mat', "Save Message" );
if file
save(file, 'props', 'values', 'visibilities');
end
end
function LoadButtonPushed(app, event)
file = uigetfile('*.mat', "Load Message");
if file
load(file, 'props', 'values', 'visibilities');
end
for i = 1:length(props)
propName = props{i};
property = app.(propName);
if isprop(property, 'Value')
app.(propName).Value = values{i};
end
if isprop(property, 'Visible')
app.(props{i}).Visible = visibilities{i};
end
end
end

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