How to Initialize a CKAsset?

Question

I have a class that has a CKAsset (image file) that pulls data from CloudKit. However, I can't figure out how to initialize the CKAsset. I don't have the data at the time of initialization. The class has strings as well, but I can use "" to initialize them. What can be used to initialize a CKAsset?

Here is my class...

class Locations: NSObject, MKAnnotation {
var title: String?
var subtitle: String?
var coordinate: CLLocationCoordinate2D
var story: String?
var image: CKAsset

override init()
{
    self.title = "Test Title"
    self.subtitle = "Test Subtitle"
    self.coordinate = CLLocationCoordinate2D.init()
    self.story = ""
    self.image = <- How do I init the CKAsset before I have the data?
}
}

You need a file url to the file to save. Or get the asset from a record to read. — rmaddy, Mar 22 '16 at 05:35
I know, but at the time of init I have nothing but an empty class. — ALTVisual, Mar 22 '16 at 05:37
You are not being clear. Update your question with relevant code. — rmaddy, Mar 22 '16 at 05:41
How do I fill the asset with the data if I can't use the asset without initialization? — ALTVisual, Mar 22 '16 at 06:03
Do you need to create the asset during the init of your class? Can you instead make image an Optional? Alternatively create a required initializer for the class, which includes the URL for the CKasset's initializer. — Michael, Mar 22 '16 at 06:09

score 0 · Answer 1 · answered Mar 22 '16 at 08:16

Morning, you will find the answer to your question buried in this code :)

func saveLeCollection(theGlob:NSURL) {

    let container = CKContainer(identifier: "iCloud.com")
    let publicDB = container.publicCloudDatabase

    let singleLink2LinkthemALL = CKRecordID(recordName: uniqReference)
    let newRecord = CKRecord(recordType: "Collection", recordID: singleLink2LinkthemALL)
    let whistleAsset = CKAsset(fileURL: theAssetURL)
    newRecord["theAsset"] = whistleAsset


    var localChanges:[CKRecord] = []
    localChanges.append(newRecord)

    let saveRecordsOperation = CKModifyRecordsOperation(recordsToSave: localChanges, recordIDsToDelete: nil)
    saveRecordsOperation.savePolicy = .ChangedKeys
    saveRecordsOperation.perRecordCompletionBlock =  { record, error in
        if error != nil {
            self.showAlert(message: error!.localizedDescription)
            print(error!.localizedDescription)
        }
        // deal with conflicts
        // set completionHandler of wrapper operation if it's the case
    }
    saveRecordsOperation.modifyRecordsCompletionBlock = { savedRecords, deletedRecordIDs, error in
        if error != nil {
            self.showAlert(message: error!.localizedDescription)
            print(error!.localizedDescription)
        } else {
            // deal with conflictsay
            // set completionHandler of wrapper operation if it's the case

        }
    }

    publicDB.addOperation(saveRecordsOperation)


}

score 0 · Answer 2 · answered Mar 22 '16 at 12:12

First I would say setting properties in the init() like you are doing is not going to work for a CKAsset since until you make a call and pass the record to your class you will not know the fileURL or name that CK will save a CKAsset file. However, I built this framework that you never need to have a CKAsset in the class. It handles everything. From download to cache and all you need is the recordID and the property key of your asset. You use the methods directly on the imageview. Hope this helps. https://github.com/agibson73/AGCKImage

How to Initialize a CKAsset?

2 Answers2