Cast NSValue to CMTimeRange type swift 5.3

Question

Swift 5.0 normally cast NSValue to CMTimeRange type, it does not supported in swift 5.3? For example this worked correctly in Xcode 11.7 (Swift 5.0)

let nsValue = NSValue(timeRange: CMTimeRange(start: CMTime(seconds: 12, preferredTimescale: 1), duration: CMTime(seconds: 22, preferredTimescale: 1)))
let value = nsValue as? CMTimeRange

But fails in Xcode 12 (Swift 5&) and show warning:

Cast from 'NSValue' to unrelated type 'CMTimeRange' always fails

score 1 · Answer 1 · edited Sep 24 '20 at 18:26

1

NSValue has timeRangeValue which returns CMTimeRange without explicit cast.

edited Sep 24 '20 at 18:26

Dharman

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answered Sep 24 '20 at 18:20

Digitech

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Yes, but it may return empty struct. Common types can be cast to it's real type without access to property. My question is why it missed for this property? – Tayphoon Sep 28 '20 at 07:52

score 0 · Answer 2 · answered Sep 28 '20 at 22:05

0

dharmon is correct:

iOS13: let value = nsValue as? CMTimeRange

iOS14: let value = nsValue.timeRangeValue

answered Sep 28 '20 at 22:05

Taylor Smith

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Cast NSValue to CMTimeRange type swift 5.3

2 Answers2