create text file with a new line with each append

[SS TheAppInventor]

Hi all, I am writing an app that appends 2 textbox text into a text file. I am using \n  after each write for the carriage return but the text file that AI2 creates looks like this:

" 363627" " ryuwuwiw" " 373636e6" "dhhehsjs " " 477372u" " ruejjej"

I need the file to be in following format so I can read the text as tab delimited file on a windows app:

" 363627" " ryuwuwiw"

" 373636e6" "dhhehsjs "

" 477372u" " ruejjej"

Any suggestion will be kindly appreciated!

Kind regards,

Sal

[Taifun]

It would really help if you provided a screenshot of your relevant blocks, so we can see what you are trying to do, and where the problem may be.

Taifun

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Trying to push the limits of App Inventor! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun. 

[SS TheAppInventor]

Thanks for your reply Taifun. I have attached the block that I am using to write to text file.

[Taifun]

you can try to put your values into a list of lists and then use the list to csv table block together with the File.SaveFile block

Taifun

[SS TheAppInventor]

Thanks Taifun - do you have any example I can follow?

[Taifun]

just try something and if you still have issues, then post a new screenshot of your relevant blocks

see also

• How to work with Lists by Saj
• How to work with Lists and Lists of lists (pdf) by appinventor.org

Taifun

[Abraham Getzler]

I need the file to be in following format so I can read the text as tab delimited file on a windows app

 Does your Windows app have the capability to import comma separated values instead of tab delimited values?

That makes things easier on the AI2 side.

If not, you need a way to generate tab (X'09') characters on the AI2 side.

See attached TAB.png for how to do that.

If you are uploading your text file to Windows using the wrong program (NFS) you might be missing the automatic addition of CR (x'0D') to the LF characters.

Windows Notepad might not be satisfied with just NL as an end of line character.

Your Windows app might also need the CRLF sequence,

See my CRLF Gallery sample for blocks to generate CR and TAB.

ai2.appinventor.mit.edu/?galleryId=5926305773387776

ABG

[SS TheAppInventor]

Thanks ABG, the desktop app does have an option to read .CSV file. Do you have any example I can follow to write the 2 textbox field as 2 comma separated values in one line?

Kind regards,

Sal

[SPL]

I made an app based on your suggestions, but it doesn't add the space between the "'s... Are you interested anyway?

[Abraham Getzler]

 Do you have any example I can follow to write the 2 textbox field as 2 comma separated values in one line?

 See attached.

It's your sample, with two changes:

  comma instead of space between the two text values, and

  only a single \n

That should work as csv table input.

If your Windows app doesn't like it and wants a CRLF at the end of line,

replace the "\n" at the end of the JOIN with a "call CRLF()" from my sample CRLF app.

ABG