Crash on image.pngData() as (NSCopying & NSObjectProtocol)?

Question

Created Feb ’21

Replies 3

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Participants 2

Code Block  func artWorkItem(imageToShow: UIImage) -> AVMetadataItem? {
    let item = AVMutableMetadataItem()
     item.value = imageToShow.pngData() as (NSCopying & NSObjectProtocol)?
    item.dataType = kCMMetadataBaseDataType_PNG as String
    item.identifier = AVMetadataIdentifier.commonIdentifierArtwork
    item.extendedLanguageTag = "und"
    return item.copy() as? AVMetadataItem
  }

From crash organizer stack trace crash occurs at line “item.value = imageToShow.pngData() as (NSCopying & NSObjectProtocol)?” States specialized AVMetaData.artWorkItem(imageToShow:) +252.
It also shows info like “specialized static Data_unconditionallyBridgeFromObjectiveC()”.Could not replicate the crash. What could be the reason for the crash ?. Is it some memory issue?

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Answer 1

OOPer OP

Feb ’21

What do you get with changing as (NSCopying & NSObjectProtocol)? to as NSData? ?

0

Answer 2

mssaranya6@gmail.com OP

Feb ’21

I would like to get details regarding the crash "specialized static Data_unconditionallyBridgeFromObjectiveC()". Could not replicate the crash but from crash organizer just got above details.

0

Answer 3

OOPer OP

Feb ’21

You should better visit forums.swift.org if you want to discuss about the current implementation details of the Swift compiler and runtime. Anyway, bridging Data to (NSCopying & NSObjectProtocol) is not documented anywhere and would change the behavior at any time in the future.

1