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

You have to construct a representation of your image as a particular format (say, JPEG or PNG), and then call writeToFile:atomically: on the representation:

UIImage *image = ...;
NSString  *path = ...;
[UIImageJPEGRepresentation(image, 1.0) writeToFile:path atomically:YES];