UIcolor转UIImage

+ (UIImage *)imageWithColor:(UIColor *)color {

CGRect rect = CGRectMake(0, 0, 1, 1);

UIGraphicsBeginImageContext(rect.size);

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSetFillColorWithColor(context, [color CGColor]);

CGContextFillRect(context, rect);

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return image;

}