iOS)이미지에 색 넣기

이미지에 원하는 색으로 색칠을 해주는 코드입니다.

같은 아이콘이지만 여러가지 색으로 바꿔줘야 할때 유용 할 것 같습니다.

(Objective-C 코드)

UIImage *image = [UIImage imageNamed:@“your_img_name”];
CGRect rect = CGRectMake(0, 0, image.size.width, image.size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, NO, image.scale);
CGContextRef c = UIGraphicsGetCurrentContext();
[image drawInRect:rect];
CGContextSetFillColorWithColor(c, [UIColor blackColor].CGColor);
CGContextSetBlendMode(c, kCGBlendModeSourceAtop);
CGContextFillRect(c, rect);
UIImage *resultImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

(Swift 코드)

let image = UIImage(named: "your_img_name")
let rect = CGRectMake(0, 0, image!.size.width, image!.size.height)
UIGraphicsBeginImageContextWithOptions(rect.size, false, image!.scale)
let c : CGContextRef = UIGraphicsGetCurrentContext()!
image?.drawInRect(rect)
CGContextSetFillColorWithColor(c, UIColor.blackColor().CGColor)
CGContextSetBlendMode(c, CGBlendMode.SourceAtop)
CGContextFillRect(c, rect)
let resultImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()