Swift无法更改UIImageView图像的色调

import CoreImage

let context = CIContext()

guard let image = imageView.image, let ciImage = CIImage(image: image) else {
    return
}

let filter = CIFilter(name: "CIColorControls")
filter?.setValue(ciImage, forKey: kCIInputImageKey)
filter?.setValue(1.0, forKey: kCIInputSaturationKey) // 设置饱和度
filter?.setValue(0.5, forKey: kCIInputBrightnessKey) // 设置亮度
filter?.setValue(1.2, forKey: kCIInputContrastKey) // 设置对比度

guard let outputImage = filter?.outputImage else {
    return
}
let cgImage = context.createCGImage(outputImage, from: outputImage.extent)
let processedImage = UIImage(cgImage: cgImage)

imageView.image = processedImage