Migrating app from Swift 2.2 to 3.0 with WCSessionDelegate

Question

My app was working correctly with swift 2.2 in xCode 7 but after upgrade my xCode to 8 version and migrate swift to 3.0, I founded this error in my WCSeesionDelegate

class WatchSessionManager: NSObject, WCSessionDelegate {
     @available(watchOS 2.2, *)
     public function session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?)
     {
     }

Type "WatchSessionManager" does not conform to protocol "WCSessionDelegate"

After that error I added the mandatory functions and then I founded this errors

class WatchSessionManager: NSObject, WCSessionDelegate {
     @available(iOS 9.3, *)
     public func sessionDidBecomeInactive(_ session: WCSession)
     {
     }
Cannot override "sessionDidBecomeInactive" which has been marked unavailable

     @available(iOS 9.3, *)
     public func sessionDidDeactivate(_ session: WCSession)
     {
     }
Cannot override "sessionDidDeactivate" which has been marked unavailable

     @available(watchOS 2.2, *)
     public function session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?)
     {
     }

Any idea?

Swift

2.6k

Posted by

Ivang1976

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Answer 1

My deployment target is iOS10 and WatchOS3

OK. I’m going to ignore the watchOS deployment target because you said earlier than this is failing on the iOS side of the build.

Here’s what I did:

I created a new project from the Single View Application template in Xcode 8. This defaults to the iOS deployment target being set to iOS 10.0.
In that project I added a new Swift file called
```
WatchSessionManager.swift
```
.
I pasted in the code from my 20 Sep post, above.
I built for the simulator.

It built just fine. Please try this at your end and let me know what you see.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Posted by

eskimo

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Answer 2

The following works fine when I paste it into a newly created iOS project.

import WatchConnectivity

class WatchSessionManager: NSObject, WCSessionDelegate { 
    public func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) 
    { 
    }

    func sessionDidBecomeInactive(_ session: WCSession) {
    }

    func sessionDidDeactivate(_ session: WCSession) {
        session.activate()
    }
}

I suspect you’re tripping over availability problems. Do you get these errors when building the iOS side or the watchOS side?

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Posted by

eskimo

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Answer 3

This code is part of the iOS side.

Thank you

Posted by

Ivang1976

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Answer 4

This code is part of the iOS side.

Cool; that’s what I was testing.

Why did you include watchOS availability annotations?

What’s your iOS deployment target?

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Posted by

eskimo

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Answer 5

Hi Eskimo

Yes, you're right, this availability is wrong, but if I remove this part, the errors doesn't change.

My deployment target is iOS10 and WatchOS3

Thank a lot for your help

Posted by

Ivang1976

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Answer 6

My deployment target is iOS10 and WatchOS3

OK. I’m going to ignore the watchOS deployment target because you said earlier than this is failing on the iOS side of the build.

Here’s what I did:

I created a new project from the Single View Application template in Xcode 8. This defaults to the iOS deployment target being set to iOS 10.0.
In that project I added a new Swift file called
```
WatchSessionManager.swift
```
.
I pasted in the code from my 20 Sep post, above.
I built for the simulator.

It built just fine. Please try this at your end and let me know what you see.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Posted by

eskimo

Add a Comment

Answer 7

Big mistery. I delete my old file and copy/paste, then it works.

Thanks a lot, I was desperate.

Posted by

Ivang1976

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Migrating app from Swift 2.2 to 3.0 with WCSessionDelegate

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