iPhone SDK：更改图片颜色

Question

In cocos2d, there's an option to "change" a sprite's color. For example: I have a white image, then I execute the code and the image turns to any color that I specify. How can I do the same thing without using the cocos2d libraries?

I know it's possible and I did such a thing myself about 5 months ago, but in typical fashion I somehow managed to lose the code.

Answer 1

try this

UIImage *newImage = [_imgView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
UIGraphicsBeginImageContextWithOptions(image.size, NO, newImage.scale);
[yourTintColor set];
[newImage drawInRect:CGRectMake(0, 0, image.size.width, newImage.size.height)];
newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

_imgView.image = newImage;

Answer 2

First set the image in UIImageView then use below code snippet.

imgView.image = [imgView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
[imgView setTintColor:[UIColor redColor]];