I am using the below code for convert black and white image. Its working

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Asked: June 11, 20262026-06-11T20:06:07+00:00 2026-06-11T20:06:07+00:00

I am using the below code for convert black and white image. Its working

0

I am using the below code for convert black and white image. Its working fine. But I change the brightness and contrast of that image. App is crashed only on iOS 6.0. I am using any deprecated methods? Please help me. Change brightness and contrast using this link https://github.com/esilverberg/ios-image-filters

- (UIImage *)convertImageToGrayScale:(UIImage *)image
{
    CGRect imageRect = CGRectMake(0, 0, image.size.width, image.size.height);
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray();
    CGContextRef context = CGBitmapContextCreate(nil, image.size.width, image.size.height, 8, 0, colorSpace, kCGImageAlphaNone);
    CGContextDrawImage(context, imageRect, [image CGImage]);
    CGImageRef imageRef = CGBitmapContextCreateImage(context);
    UIImage *newImage = [UIImage imageWithCGImage:imageRef];
    CGColorSpaceRelease(colorSpace);
    CGContextRelease(context);
    CFRelease(imageRef);
    return newImage;
}

Thanks in advance.