using NSKeyedArchiver with UITextView

Question

Created Oct ’22

Replies 4

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I am using NSKeyedArchiver to archive and retrieve a UITextView. This works in the I can retrieve most of UITextView. However I cannot save and retrieve info about the border which is stored in a CALayer.

             let tvdata = try NSKeyedArchiver.archivedData(withRootObject: textview! as UITextView, requiringSecureCoding: false)

            let tvtmp = try! (NSKeyedUnarchiver.unarchiveTopLevelObjectWithData((self.tvdata?.regularFileContents)!) as? UITextView)!

            let myAtmp = UITextView.unsecureUnarchived(from: tvdata)

            print("textview.layer.borderWidth = \(textview!.layer.borderWidth)")

            print("myAtmp.layer.borderWidth = \(myAtmp!.layer.borderWidth)")

 

            let tvWrapper:FileWrapper = FileWrapper.init(regularFileWithContents:tvdata as Data)

            let tmptv = UITextView.unsecureUnarchived(from: (tvWrapper.regularFileContents!))

Both tvTmp and myAtmp contains all of the usual UITextView values. Neither has the value for borderWidth. The printed values are :

textview.layer.borderWidth = 3.0

myAtmp.layer.borderWidth = 0.0

tmptv.layer.borderWidth = 0.0

How can I archive and unarchive the borderWidth value?

Answered by Claude31 in 731249022

So layer is handled differently, as an "extra" property and not considered by KeyArchiver.

In fact layer is just used for rendering view’s Core Animation. And properties are accessed via the layer delegate, not directly in the view. May that be the reason ?

Anyway, if problem solved, don't forget to close the thread. Good continuation.

Boost

Answer 1

Claude31 OP

Oct ’22

There must be some missing words here: "This works in the I can retrieve most of UITextView. "

0

Answer 2

Claude31 OP

Oct ’22

You could save borderWidth value under a separate key

0

Answer 3

bwestcott OP

Oct ’22

Thanks. Saving borderwidth under a separate key solved my problem. I still don’t understand why the borderwidth was not archived with UITextView though

0

Answer 4

Claude31 OP

Oct ’22

Accepted Answer

So layer is handled differently, as an "extra" property and not considered by KeyArchiver.

In fact layer is just used for rendering view’s Core Animation. And properties are accessed via the layer delegate, not directly in the view. May that be the reason ?

Anyway, if problem solved, don't forget to close the thread. Good continuation.

0