'\n' is not working when creating .txt file in iOS

Question

In my application,

I have create .txt file programatically. file create successfully. but \n is not working in this file.

I have use following code for this.

  NSString *str=[NSString stringWithFormat: @"line 1 \nline 2 \nline 3"];
  NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
  NSString *documentsDirectory = [paths objectAtIndex:0];
  NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.txt",@"REFINESEARCH"]];
  [str writeToFile:pdfPath atomically:YES];

When I open REFINESEARCH.txt file in mac it will working fine. But when I open this file in windows OS. it's looking like this..

\n is not working here. how to solve this?

Answer 1

Replace your method:

  [str writeToFile:pdfPath atomically:YES];

With:

 [str writeToFile:pdfPath atomically:YES encoding:NSUTF8StringEncoding error:nil];

Answer 2

Windows (or more specifically, Notepad) uses carriage return/line feed to display new lines. Use \r\n instead and you should be fine.

Answer 3

Modiifed your code as only (\r) will work so just replace \n to \r and try:-

NSString *str=[NSString stringWithFormat:@"line 1 \rline 2 \rline 3"];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDesktopDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.txt",@"REFINESEARCH"]];
[str writeToFile:pdfPath atomically:YES];