UIImageWriteToSavedPhotosAlbum save as PNG with transparency?

Question

I\'m using UIImageWriteToSavedPhotosAlbum to save a UIImage to the user\'s photo album. The problem is that the image doesn\'t have transparency and is a JPG. I\'ve got the

Answer 1

I created an extension of UIImage with safe unwrapping:

Extension

extension UIImage {
    func toPNG() -> UIImage? {
        guard let imageData = self.pngData() else {return nil}
        guard let imagePng = UIImage(data: imageData) else {return nil}
        return imagePng
    }
}

Usage:

let image = //your UIImage
if let pngImage = image.toPNG() {
     UIImageWriteToSavedPhotosAlbum(pngImage, nil, nil, nil)
}