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Using ImageIO and Swift to convert a UIImage to Data
func UIImageToDataIO(image: UIImage, compressionRatio: CGFloat, orientation: Int = 1) -> Data? {
return autoreleasepool(invoking: { () -> Data in
let data = NSMutableData()
let options: NSDictionary = [
kCGImagePropertyOrientation: orientation,
kCGImagePropertyHasAlpha: true,
kCGImageDestinationLossyCompressionQuality: compressionRatio
]
let imageDestinationRef = CGImageDestinationCreateWithData(data as CFMutableData, kUTTypeJPEG, 1, nil)!
CGImageDestinationAddImage(imageDestinationRef, image.cgImage!, options)
CGImageDestinationFinalize(imageDestinationRef)
return data as Data
})
}
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