CGBlendMode

- (UIImage *) imageWithTintColor:(UIColor *)tintColor blendMode:(CGBlendMode)blendMode
{
    //We want to keep alpha, set opaque to NO; Use 0.0f for scale to use the scale factor of the device’s main screen.
    UIGraphicsBeginImageContextWithOptions(self.size, NO, 0.0f);
    [tintColor setFill];
    CGRect bounds = CGRectMake(0, 0, self.size.width, self.size.height);
    UIRectFill(bounds);

    //Draw the tinted image in context
    [self drawInRect:bounds blendMode:blendMode alpha:1.0f];

    if (blendMode != kCGBlendModeDestinationIn) {
        [self drawInRect:bounds blendMode:kCGBlendModeDestinationIn alpha:1.0f];
    }

    UIImage *tintedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return tintedImage;
}

调用

self.ivStar.image = [[UIImage imageNamed:@"image"] imageWithTintColor:[UIColor orangeColor] blendMode:kCGBlendModePlusLighter];

原图


kCGBlendModeNormal


kCGBlendModeMultiply


kCGBlendModeScreen

kCGBlendModeOverlay

kCGBlendModeDarken

kCGBlendModeLighten

kCGBlendModeColorDodge

kCGBlendModeColorBurn

kCGBlendModeSoftLight

kCGBlendModeHardLight

kCGBlendModeDifference

kCGBlendModeExclusion

kCGBlendModeHue

kCGBlendModeSaturation

kCGBlendModeColor

kCGBlendModeLuminosity

kCGBlendModeClear

kCGBlendModeCopy

kCGBlendModeSourceIn

kCGBlendModeSourceOut

kCGBlendModeSourceAtop

kCGBlendModeDestinationOver

kCGBlendModeDestinationIn

kCGBlendModeDestinationOut

kCGBlendModeDestinationAtop

kCGBlendModeXOR

kCGBlendModePlusDarker

kCGBlendModePlusLighter