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

I need to save notes in the text area to a specific location. How to save the data using app designer?

Answer 1

[Siriniharika Katukam]

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!

[Peter de Goot]

This appears to remove any paragraph characters. How to retain?

Answer 2

[kuldeep vaishnav]

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

Answer 3

[David Szwer]

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.

[David Duque]

how can I choose a path to save the txt file?

[David Szwer]

'a.txt' is the filename. Replace that with the filename you want, including the full path.