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

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RN
RN 2020-2-12
评论： David Szwer 2021-7-23
I need to save notes in the text area to a specific location. How to save the data using app designer?

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采纳的回答

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!

更多回答（2 个）

kuldeep vaishnav
kuldeep vaishnav 2020-5-24
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 2021-2-19
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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