macOS Write to Text-file in Xcode (noob)

S

SkS

macrumors newbie

Original poster

Dec 15, 2006

1

0

• Dec 15, 2006

• #1

Hi
I dont know alot about programming i only know a little about Visual Basic Express and this is Xcode stuff.....

I have looked at the codes from Bruji's barcode scanner at http://www.bruji.com/cocoa/barcode.html and i now the barcodes is beeing written to a text windows inside the app but i want the app to write the Barcode to a text file on my harddisk.

If iam right the following codes add the Barcode to the Text window inside the application:

- (void)gotBarcodeNSString *)barcode {
[resultsTextView replaceCharactersInRange:NSMakeRange([[resultsTextView string] length] ,0) withString:barcode];
[resultsTextView replaceCharactersInRange:NSMakeRange([[resultsTextView string] length],0) withString"\n"];

Hope you can help me, thanks
- SKS

 

K

kainjow

Moderator emeritus

Jun 15, 2000

7,958

7

• Dec 17, 2006

• #2

I think what you want is something like this:

Code:

[barcode writeToFile:@"/file.txt" atomically:YES];

 

Soulstorm

macrumors 68000

Feb 1, 2005

1,887

1

• Dec 18, 2006

• #3

the barcode is an NSString. So, you can open the developer documentation in your XCode and search the NSString class explanation. In there you will find ways to write an NSString to a file, loading an NSString from a file, and many more.

 

G

garethlewis2

macrumors 6502

Dec 6, 2006

277

1

• Dec 18, 2006

• #4

Before you really get yourself into a pickle, buy the following books

Programming in Objective-C by Stephen Cochan
Programming Cocoa by Aaron Hillegrass. <Hyped but good, glosses over controllers>
Cocoa - Anguish, et al. The def book on understanding Cocoa from a programmers point of view, very very heavy, but worth it. Only downside is, it is based on Jaguar code.

Without that grounding, you will always always get stuck.

For your question. Look at the docmentation for NSFileHandle and NSFileManager. These aren't the only ways, but they are conveniant and better. safe.

 

sikosis

macrumors newbie

Sep 22, 2010

7

2

• Sep 22, 2010

• #5

Pity writeToFile is deprecated ...

 

K

kainjow

Moderator emeritus

Jun 15, 2000

7,958

7

• Sep 22, 2010

• #6

sikosis said:

Pity writeToFile is deprecated ...

Click to expand...

As the docs say:

Use writeToFile:atomically:encoding:error: instead.

Click to expand...

 

sikosis

macrumors newbie

Sep 22, 2010

7

2

• Sep 22, 2010

• #7

Ah worked it out ... you need to add a couple of extra params.

- (BOOL)writeToFileNSString *)path atomicallyBOOL)useAuxiliaryFile encodingNSStringEncoding)enc errorNSError **)error

Click to expand...

@kainjow ... yep that's it -- guess I should have refreshed this page first before replying