ios - Swift NSCoding with NSValue -

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isn't nsvalue nsobject ? why crashing on

    var coordinatesrawdata = nsvalue(mkcoordinate: coordinates.first!)     if coordinatesrawdata != nil {         // crashing here. have valid nsvalue object         acoder.encodeobject(coordinatesrawdata, forkey: "coordinatesrawdata")     }

error log

*** terminating app due uncaught exception 'nsinvalidargumentexception', reason: '*** -[nskeyedarchiver encodevalueofobjctype:at:]: archiver cannot encode structs'

but if this

    var coordinatesrawdata = nsvalue()     acoder.encodeobject(coordinatesrawdata, forkey: "coordinatesrawdata")

there no crash - both nsvalues .. right ?

note, other nscoding / decoding working fine.

i didn't far did. crashed on these 2 lines:

let loc = cllocationcoordinate2d(latitude: 20, longitude: 20) let val = nsvalue(mkcoordinate:loc)

this tells me nsvalue(mkcoordinate:) broken. , it's not swift issue; same crash using same code translated objective-c.


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