C7LookupFilter 有问题

[hydyy]

C7LookupFilter 有问题, 图片会变蓝, 不知道怎么出现的

[yangKJ]

提供一下对照表和测试图，我测试一下看看
邮箱：ykj310@126.com

[hydyy]

let imageSourceOptions = [kCGImageSourceShouldCache: false] as CFDictionary
let imageSource = CGImageSourceCreateWithURL(self as CFURL, imageSourceOptions)
let maxDimensionInPixels = maxPixels
let downsampleOptions = [kCGImageSourceCreateThumbnailFromImageAlways: true,
kCGImageSourceShouldCacheImmediately: true,
kCGImageSourceCreateThumbnailWithTransform: true,
kCGImageSourceThumbnailMaxPixelSize: maxDimensionInPixels] as CFDictionary
if let imageSource = imageSource,
let downsampledImage = CGImageSourceCreateThumbnailAtIndex(imageSource, 0, downsampleOptions) {
return UIImage(cgImage: downsampledImage)
}
else {
return nil
}

不好意思, 查到原因了,是因为做FIlter的图片是通过这个方式取的缩略图 就会变蓝