ShareLink + Preview equals crash

I am trying to use the new ShareLink component in an app I am moving to SwiftUI. If I use the init(items: Data, subject: Text?, message: Text?) variant of the initializer all works well. However if I try to include a preview using the initializer that takes an additional parameter that is a SharePreview instance I get a crash.

The crash complains about Fatal error: SWIFT TASK CONTINUATION MISUSE: data(contentType:) tried to resume its continuation more than once, throwing exportFailed!

thread #2, queue = 'com.apple.root.user-initiated-qos.cooperative', stop reason = Fatal error: SWIFT TASK CONTINUATION MISUSE: data(contentType:) tried to resume its continuation more than once, throwing exportFailed!

The creation of the SharePreview object itself succeeds with nothing. Its the initialization of the ShareLink object that goes boom.

Any ideas? Known issue? Wait for next beta?

Environment:

Xcode 14 beta 2, iOS 16 beta 2, iPhone 8

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hotngui
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Using Xcode 14 beta 5 I no longer get the crash. However, now when I include the SharePreview the list of apps for sharing contains nothing except an action to create a quick note.

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hotngui
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  • Looks like that cleared up, so I can use SharePreview to show an alternate image and text on the share sheet when it opens. Now I am trying to figure out how to get a custom image and a URL output to iMessage when selected.

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    hotngui
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Update: I just tried with Xcode and iOS beta 3 and got the same crash.

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hotngui
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I'm seeing the same thing in my code.

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Hunter
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I just tried again with Xcode 14 beta 4 / iOS 16 beta 4 - same crash. I do now get the following in the debugger console. I do not use continuations in this particular app and it shows up when I tap the ShareLink.

_Concurrency/CheckedContinuation.swift:184: Fatal error: SWIFT TASK CONTINUATION MISUSE: data(contentType:) tried to resume its continuation more than once, throwing exportFailed!

2022-07-27 11:19:58.818137-0700 ItsAlmostTime[575:16531] _Concurrency/CheckedContinuation.swift:184: Fatal error: SWIFT TASK CONTINUATION MISUSE: data(contentType:) tried to resume its continuation more than once, throwing exportFailed!
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hotngui
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  • I'm experiencing the same on iOS16 beta 4.

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    secondstagerob
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Using Xcode 14 beta 5 I no longer get the crash. However, now when I include the SharePreview the list of apps for sharing contains nothing except an action to create a quick note.

Posted by
hotngui
Up vote reply of hotngui Down vote reply of hotngui
Post marked as solved

  • Looks like that cleared up, so I can use SharePreview to show an alternate image and text on the share sheet when it opens. Now I am trying to figure out how to get a custom image and a URL output to iMessage when selected.

    —
    hotngui
Add a Comment