How to add percent sign to NSString

Question

I want to have a percentage sign in my string after a digit. Something like this: 75%.

How can I have this done? I tried:

[NSString stringWithFormat:@"%d\%", someDigit];

But it didn't work for me.

score 954 · Accepted Answer · answered Apr 11 '09 at 07:48

954

The code for percent sign in NSString format is %%. This is also true for NSLog() and printf() formats.

answered Apr 11 '09 at 07:48

mouviciel

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I am trying NSLog([NSString stringWithFormat:@"%@%%", self.Ptextfield.text ] ); and the output is jsut the uitextfield.text – Ali Mar 20 '11 at 09:35
2

`NSLog` treats its first argument as a format string, but you have already formatted the string using `stringWithFormat:`. Just say `NSLog(@"%@%%", self.Ptextfield.text)`. – rob mayoff Jun 20 '13 at 06:12
This doesn't work for UILocalNotification. See http://stackoverflow.com/a/27971848/2446178. – JRam13 Jan 15 '15 at 19:53
this works, this is my case powerLbl.text = [NSString stringWithFormat:@"Power: %d%%", power]; – dotrinh PM May 21 '22 at 08:23

score 140 · Answer 2 · edited Jun 20 '13 at 06:05

140

The escape code for a percent sign is "%%", so your code would look like this

[NSString stringWithFormat:@"%d%%", someDigit];

Also, all the other format specifiers can be found at Conceptual Strings Articles

edited Jun 20 '13 at 06:05

NANNAV

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answered Apr 11 '09 at 08:03

binarybob

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And the reason why \% doesn't work is that backslash is the escape character for string literals, so typing \% in your source code actually creates a string containing a single percent character. – gnasher729 Apr 16 '14 at 17:20

score 17 · Answer 3 · answered Feb 12 '13 at 15:06

17

If that helps in some cases, it is possible to use the unicode character:

NSLog(@"Test percentage \uFF05");

answered Feb 12 '13 at 15:06

Resh32

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`\uFF05` works for me when it is part of the `NSString` in `UILocalNotification`, not `%%`. Thanks! – Scott Apr 13 '14 at 13:17
4

That's a "full width percent sign" for use with chinese or japanese characters, very much different from an ordinary percent character. – gnasher729 Apr 16 '14 at 17:19

score 10 · Answer 4 · answered Jan 15 '15 at 19:52

The accepted answer doesn't work for UILocalNotification. For some reason, %%%% (4 percent signs) or the unicode character '\uFF05' only work for this.

So to recap, when formatting your string you may use %%. However, if your string is part of a UILocalNotification, use %%%% or \uFF05.

score 6 · Answer 5 · edited May 08 '14 at 10:31

6

seems if %% followed with a %@, the NSString will go to some strange codes try this and this worked for me

NSString *str = [NSString stringWithFormat:@"%@%@%@", @"%%", 
                 [textfield text], @"%%"];

edited May 08 '14 at 10:31

Alex Cio

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answered Jun 13 '13 at 03:14

user1483392

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score 4 · Answer 6 · edited May 08 '14 at 10:32

4

uese following code.

 NSString *searchText = @"Bhupi"
 NSString *formatedSearchText = [NSString stringWithFormat:@"%%%@%%",searchText];

will output: %Bhupi%

edited May 08 '14 at 10:32

Alex Cio

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answered Apr 14 '13 at 11:56

Bhoopi

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serge-k · Answer 7 · 2016-02-11T22:01:45.607

iOS 9.2.1, Xcode 7.2.1, ARC enabled

You can always append the '%' by itself without any other format specifiers in the string you are appending, like so...

int test = 10;

NSString *stringTest = [NSString stringWithFormat:@"%d", test];
stringTest = [stringTest stringByAppendingString:@"%"];
NSLog(@"%@", stringTest);

For iOS7.0+

To expand the answer to other characters that might cause you conflict you may choose to use:

- (NSString *)stringByAddingPercentEncodingWithAllowedCharacters:(NSCharacterSet *)allowedCharacters

Written out step by step it looks like this:

int test = 10;

NSString *stringTest = [NSString stringWithFormat:@"%d", test];
stringTest = [[stringTest stringByAppendingString:@"%"] 
             stringByAddingPercentEncodingWithAllowedCharacters:
             [NSCharacterSet alphanumericCharacterSet]];
stringTest = [stringTest stringByRemovingPercentEncoding];

NSLog(@"percent value of test: %@", stringTest);

Or short hand:

NSLog(@"percent value of test: %@", [[[[NSString stringWithFormat:@"%d", test] 
stringByAppendingString:@"%"] stringByAddingPercentEncodingWithAllowedCharacters:
[NSCharacterSet alphanumericCharacterSet]] stringByRemovingPercentEncoding]);

Thanks to all the original contributors. Hope this helps. Cheers!

How to add percent sign to NSString

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