Ever built an app which displays photos and can’t decide which is the best UIStatusBarStyle to use, because there isn’t one that will work with every photo?

Max Howell (who wrote Homebrew) has 2 Cocoapods that will help with that:

• UIColorPerceivedLuminanc]
• UIImageAverageColo]

Combining them, you can use the luminance of the UIImage instance to figure out whether UIStatusBarStyleLightContent or UIStatusBarStyleDefault is more appropriate:

#import "UIImage+AverageColor.h"
#import "UIColor+PerceivedLuminance.h"

@implementation MyViewController

- (UIStatusBarStyle)preferredStatusBarStyle {
    return self.topImageView.image.averageColor.perceivedLuminance > 0.5
        ? UIStatusBarStyleLightContent
        : UIStatusBarStyleDefault;
}

@end

Try it out.