Picker Error Message on Exit (encountered while discovering extensions: Error Domain=PlugInKit Code=13) With Swift 4 - Xcode 9

Question

Similar to

PhotoPicker discovery error: Error Domain=PlugInKit Code=13

and also to

https://forums.developer.apple.com/thread/82105

BUT I have t

Answer 1

I had the same issue and tried every solution I could find, but nothing helped. Just asked myself what could happen to the delegate to not being triggered: deallocation of the delegate!

And that was it in my case! When presenting the UIImagePickerController my instance of class ImagePickerController : NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate which isn't the presenting view controller, will be deallocated directly. Of course the delegate functions can't be executed anymore.

Just put a breakpoint in deinit (or dealloc in Objective-C world) and see if your delegate is being deallocated.