I'd like to check the color set for a background on a UIImageView. I've tried:
if(myimage.backgroundColor == [UIColor greenColor]){
...}
else{
...}
but that doesn't work, even when I know the color is green, it always falls into the else part.
Also, is there a way to output the current color in the debug console.
p [myimage backgroundColor]
and
po [myimage backgroundColor]
don't work.
Source: Tips4all
Have you tried [myColor isEqual:someOtherColor] ?
ReplyDeleteAs zoul pointed out in the comments, isEqual: will return NO when comparing colors that are in different models/spaces (for instance #FFF with [UIColor whiteColor]). I wrote this UIColor extension that converts both colors to the same color space before comparing them:
ReplyDelete- (BOOL)isEqualToColor:(UIColor *)otherColor {
CGColorSpaceRef colorSpaceRGB = CGColorSpaceCreateDeviceRGB();
UIColor *(^convertColorToRGBSpace)(UIColor*) = ^(UIColor *color) {
if(CGColorSpaceGetModel(CGColorGetColorSpace(color.CGColor)) == kCGColorSpaceModelMonochrome) {
const CGFloat *oldComponents = CGColorGetComponents(color.CGColor);
CGFloat components[4] = {oldComponents[0], oldComponents[0], oldComponents[0], oldComponents[1]};
return [UIColor colorWithCGColor:CGColorCreate(colorSpaceRGB, components)];
} else
return color;
};
UIColor *selfColor = convertColorToRGBSpace(self);
otherColor = convertColorToRGBSpace(otherColor);
CGColorSpaceRelease(colorSpaceRGB);
return [selfColor isEqual:otherColor];
}
if([myimage.backgroundColor isEqual:[UIColor greenColor]])
ReplyDelete