How can i save the text area characters to a text file in app designer?

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RN
RN on 12 Feb 2020
Commented: David Szwer on 23 Jul 2021
I need to save notes in the text area to a specific location. How to save the data using app designer?

Accepted Answer

Siriniharika Katukam
Siriniharika Katukam on 18 Feb 2020
Hi
To load text entered in text area of an app to a text file, you can do this in the callback function of text area.
value = app.TextArea.Value; % Value entered in textArea
f=fopen('a.txt','w');
formatSpec= "%s";
for i =1:length(value)
fprintf(f,formatSpec,value{i});
end
Hope this helps!

More Answers (2)

kuldeep vaishnav
kuldeep vaishnav on 24 May 2020
value = app.TextArea.Value; % Value entered in textArea
f=fopen('a.txt','w');
formatSpec= "%s";
for i =1:length(value)
fprintf(f,formatSpec,value{i});
end

David Szwer
David Szwer on 19 Feb 2021
Try using the writecell() function. As far as I can tell, although a TextArea's Value can be set in numerous different formats, when used as an output it always emerges as a cell array of character arrays (one line in each cell). writecell() turns this straight back into a multiline text file. Adapting Siriniharika Katukam's answer:
value = app.TextArea.Value; % Value entered in textArea
writecell(value, 'a.txt', 'QuoteStrings',false);
Matlab's documentation suggests that QuoteStrings is false by default; I found that it was true by default so you need to turn it off.

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