How do I save a UIImage to a file?

Question

If I have a UIImage from an imagePicker, how can I save it to a subfolder in the documents directory?

Answer 1

In Swift 4:

// Create path.
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
if let filePath = paths.first?.appendingPathComponent("MyImageName.png") {
    // Save image.
    do {
       try UIImagePNGRepresentation(image)?.write(to: filePath, options: .atomic)
    }
    catch {
       // Handle the error
    }
}