Type 'Notification.Name' (aka 'NSNotification.Name') has no member 'UIApplication'

Question

First it said that

'UIApplicationDidEnterBackground' has been renamed to 'UIApplication.didEnterBackgroundNotification'

and when I dot it,it said

Type 'Notification.Name' (aka 'NSNotification.Name') has no member 'UIApplication'

func listenForBackgroundNotification() {
    observer = NotificationCenter.default.addObserver(forName: Notification.Name.UIApplicationDidEnterBackground, object: nil, queue: OperationQueue.main) { [weak self] _ in
        if let weakSelf = self {
            if weakSelf.presentedViewController != nil {
                weakSelf.dismiss(animated: true, completion: nil)
            }
            weakSelf.descriptionTextView.resignFirstResponder()

        }
    }
}

It doesn't work, still have the same error – mathias merlot Jul 22 '18 at 18:52 — mathias merlot, Jul 22 '18 at 18:52

score 126 · Accepted Answer · answered Jul 23 '18 at 00:02

126

Change

forName: Notification.Name.UIApplicationDidEnterBackground

to

forName: UIApplication.didEnterBackgroundNotification

answered Jul 23 '18 at 00:02

matt

515,959
87
875
1,141

3

it says: 'didEnterBackgroundNotification' has been renamed to 'NSNotification.Name.UIApplicationDidEnterBackground' – Jan 27 '19 at 23:10

score 5 · Answer 2 · answered Feb 13 '19 at 07:42

Error with Type 'NSNotification' has no member 'UIApplication' in swift4.2

NotificationCenter.default.addObserver(self, selector:#selector(handleNotification), name: NSNotification.Name.UIApplicationDidEnterBackground, object: nil)

Need to Change accordingly

NotificationCenter.default.addObserver(self, selector:#selector(handleNotification), name: UIApplication.didEnterBackgroundNotification, object: nil)

score 3 · Answer 3 · answered Jun 21 '19 at 00:08

3

If UIApplicaiton.didEnterBackgroundNotificaiton isn't working, try just .UIApplicationDidEnterBackground instead.

answered Jun 21 '19 at 00:08

HeyImChris

31
1

Ravikanth · Answer 4 · 2019-09-25T08:40:49.510

3

Xcode 11 , swift 5

UIApplication.didBecomeActiveNotification

edited Sep 25 '19 at 08:40

answered Sep 24 '19 at 09:48

Ravikanth

308
1
10

2

You forgot `import UIKit` – Thomas Mary Aug 04 '20 at 13:57

score 2 · Answer 5 · answered May 24 '20 at 18:15

2

Xcode 11.4.1, Swift 5

Had the exact same issue. My problem was I didn't import UIKit in my custom class

import UIKit

Then I was able to implement the following:

name: UIApplication.didEnterBackgroundNotification

answered May 24 '20 at 18:15

adrapp

47
6

Type 'Notification.Name' (aka 'NSNotification.Name') has no member 'UIApplication'

5 Answers5