UIColor colorWithRed:green:blue: always produces black

objective-c cocoa-touch uicolor
amar picture amar · Aug 16, 2012 · Viewed 11.7k times · Source

I have come across many instances when I try to make custom color through code and the result is quite different from Photoshop, e.g 

[UIColor colorWithRed:(160/255) green:(97/255) blue:(5/255) alpha:1];

the resultant color is blackish, whereas it should me something like yellow. When working using sliders, the result is as expected.

Is there a problem with my Xcode or it is a general issue?

Answer

user529758 picture user529758 · Aug 16, 2012

Dividing integers results in integer division that essentially means truncating the fractional part of the result. Use

[UIColor colorWithRed:(160/255.0) green:(97/255.0) blue:(5/255.0) alpha:1.0]

instead.

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