How to create own mask in ios

Question

enter image description here

so don't negative my reputation.

My mask image is : enter image description here

My output is : enter image description here

- (UIImage*)maskImage:(UIImage *)image withMask:(UIImage *)maskImage {

    CGImageRef maskRef = maskImage.CGImage;

    CGImageRef mask = CGImageMaskCreate(
                                        CGImageGetWidth(maskRef),
                                        CGImageGetHeight(maskRef),
                                        CGImageGetBitsPerComponent(maskRef),
                                        CGImageGetBitsPerPixel(maskRef),
                                        CGImageGetBytesPerRow(maskRef),
                                        CGImageGetDataProvider(maskRef), NULL, false
                                        );

    CGImageRef masked = CGImageCreateWithMask(image.CGImage, mask);
    CGImageRelease(mask);
    return [UIImage imageWithCGImage:masked];
}

So how to create my own mask image?

Thanks...

First save it as .jpg to remove alpha. Then you can save it back to png. This image should work already. But you can also convert it to greyscale (since color information is discarded in this kind of masking) by image->mode->greyscale. — Rok Jarc, Jun 12 '12 at 07:45
rokjarc :) thanks now its working great. Thanks friend... thanks alot. — Mani, Jun 12 '12 at 07:51

score 5 · Accepted Answer · answered Jun 12 '12 at 07:47

Try converting image to a grayscale image without alpha.

Save it as .jpg to remove alpha. Then you can save it back to png. This image should work already.
Convert it to greyscale (since color information is discarded in this kind of masking) by image->mode->greyscale.

enter image description here

How to create own mask in ios

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