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]];

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