iOS中UIImage和UIColor之间的转换

//UIColor 转UIImage

- (UIImage*)imageWithColor: (UIColor*)color

{

CGRect rect=CGRectMake(0.0f, 0.0f, 100.0f, 50.0f);

UIGraphicsBeginImageContext(rect.size);

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSetFillColorWithColor(context, [color CGColor]);

CGContextFillRect(context, rect);

UIImage *Image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return Image;

}

//UIImage转UIColor

UIButton *Button = [[UIButton alloc] initWithFrame:CGRectMake(20, 200, 100,50)];

UIImage *image = [UIImage imageNamed:@"radio_bn.png"];

[cancelButton setBackgroundColor:[UIColor colorWithPatternImage:image]];