Convert UIImage to NSData and convert back to UIIm

Question

I'm trying to save a UIImage to NSData and then read the NSData back to a new UIImage in Swift. To convert the UIImage to NSData I'm using the following code:

let imageData: NSData = UIImagePNGRepresentation(myImage)

How do I convert imageData (i.e., NSData) back to a new UIImage?

Answer 1

To save as data:

From StoryBoard, if you want to save "image" data on the imageView of MainStoryBoard, following codes will work.

let image = UIImagePNGRepresentation(imageView.image!) as NSData?

To load "image" to imageView: Look at exclamation point "!", "?" closely whether that is quite same as this one.

imageView.image = UIImage(data: image as! Data)

"NSData" type is converted into "Data" type automatically during this process.