How would I save an object of type DateComponents to a CloudKit field?

Question

I am using Swift for an iOS app.

I need to store a DateComponents object as a field in CloudKit.

How would I do that?

So far I think I need to set the CloudKit field to type Bytes, and convert the DateComponents object to a Data object. Looking at the documentation for the Data class, I can't figure out how to initialize the Data object. I have no idea how to use the UnsafeBufferPointer<SourceType> used in one of the initializers.

The following code gives a runtime error:

newRecord.setObject((dateComponents as! __CKRecordObjCValue), forKey: DatabaseNameStrings.fieldTime)

Here's the runtime error message in the debug window:

Could not cast value of type 'NSDateComponents' (0x1d04208c8) to '__C.CKRecordValue' (0x1d0420ab0).

654

Posted by

ShinehahGnolaum

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Answer 1

Hope this is not too late. How about the following code snippet?

let dayToday = DateComponents(weekday: 6)
let dayTodayData = try? NSKeyedArchiver.archivedData(withRootObject: dayToday, requiringSecureCoding: true)
let newRecord = CKRecord(recordType: "ComponentData")
newRecord["data"] = dayTodayData

Try it in a playground. It worked in mine.

Posted by

Tunde

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Answer 2

Hope this is not too late. How about the following code snippet?

let dayToday = DateComponents(weekday: 6)
let dayTodayData = try? NSKeyedArchiver.archivedData(withRootObject: dayToday, requiringSecureCoding: true)
let newRecord = CKRecord(recordType: "ComponentData")
newRecord["data"] = dayTodayData

Try it in a playground. It worked in mine.

Posted by

Tunde

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How would I save an object of type DateComponents to a CloudKit field?

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