Hex colors in CGContextSetRGBFillColor

Asked Nov 23 '11 at 21:44

Active Aug 07 '13 at 13:54

Viewed 486 times

if i have some colors in hex format... how can i use a hex color in CGContextSetRGBFillColor(context, .?.) ?

Is this the only way?

NSString  *color = @"0xe3f3fbff";

unsigned r,g,b,a;

[[NSScanner scannerWithString:[color substringWithRange:NSMakeRange(2,2)]] scanHexInt:&r];
[[NSScanner scannerWithString:[color substringWithRange:NSMakeRange(4,2)]] scanHexInt:&g];
[[NSScanner scannerWithString:[color substringWithRange:NSMakeRange(6,2)]] scanHexInt:&b];
[[NSScanner scannerWithString:[color substringWithRange:NSMakeRange(7,2)]] scanHexInt:&a];

CGContextSetRGBFillColor(context,r/255.0,g/255.0,b/255.0,a/255.0);

edited Aug 07 '13 at 13:54

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asked Nov 23 '11 at 21:44

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just do it that way, it is fine. – Alex Nichol Nov 23 '11 at 21:54
possible duplicate of [how to convert hexadecimal to RGB](http://stackoverflow.com/questions/4265161/how-to-convert-hexadecimal-to-rgb) – MusiGenesis Nov 23 '11 at 22:23
The duplicate linked to has code that does this. Your way is OK, too, as long as you put it in a function somewhere. – MusiGenesis Nov 23 '11 at 22:24

Hex colors in CGContextSetRGBFillColor

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