NSLog string output question...

PhoneKoke · 03-18-2010, 07:23 PM

More noob questions... been struggling with NSLog to print out some NSStrings

So I have a label and have been fine with setting the Label dynamically but I also wanted to mirror some NSLog output.

Code:

//  This line works fine for setting the label
yearresultslabel1.text = [NSString stringWithFormat:@"%s", "-- Test Label Text"];

// Now I wanted to dump the label out to the log....
		NSLog(@"My Label now =  %s", yearresultslabel1.text);

// The log outputs "My Label now = !%!@%"  <- basically some funny characters instead of the string I want.  Even tried this with a straight NSString I thought was setup correctly.

So what do I need to do to convert the text into something printable?

TIA.

BrianSlick · 03-18-2010, 07:43 PM

%@, not %s

Batman · 03-18-2010, 07:43 PM

Quote:

Originally Posted by PhoneKoke

More noob questions... been struggling with NSLog to print out some NSStrings

So I have a label and have been fine with setting the Label dynamically but I also wanted to mirror some NSLog output.

Code:

//  This line works fine for setting the label
yearresultslabel1.text = [NSString stringWithFormat:@"%s", "-- Test Label Text"];

// Now I wanted to dump the label out to the log....
		NSLog(@"My Label now =  %s", yearresultslabel1.text);

// The log outputs "My Label now = !%!@%"  <- basically some funny characters instead of the string I want.  Even tried this with a straight NSString I thought was setup correctly.

So what do I need to do to convert the text into something printable?

TIA.

I'm surprised that works for setting the label. change %s to %@.

EDIT: BrianSlick beat me to it

BrianSlick · 03-18-2010, 07:46 PM

It works in the first case because "..." is a C string, so %s is correct. In the second case, it is now dealing with an NSString object, so it needs to be %@.

"..." = C string
@"..." = NSString

Batman · 03-18-2010, 07:49 PM

Quote:

Originally Posted by BrianSlick

It works in the first case because "..." is a C string, so %s is correct. In the second case, it is now dealing with an NSString object, so it needs to be %@.

"..." = C string
@"..." = NSString

Okay, thanks for explaining that.

PhoneKoke · 03-19-2010, 12:42 AM

Tks for the help and explanation. This Forum and helpful people are what makes it an awesome resource.