MarcusSmith

//
//  ImageLoading.swift
//  CloudKitDemo
//
//  Created by Marcus Smith on 2/29/16.
//  Copyright © 2016 FrozenFireStudios. All rights reserved.
//

import UIKit
import CloudKit

MarcusSmith

// Get image from an asset
if let asset = record["myImageKey"] as? CKAsset, image = asset.image {
    // Do something with the image
}

// Save an image as an asset
do {
    let asset = try CKAsset(image: myImage)
    record["myImageKey"] = asset
}

MarcusSmith

//
//  UIImage+CKAsset.swift
//  CloudKitDemo
//
//  Created by Marcus Smith on 2/29/16.
//  Copyright © 2016 FrozenFireStudios. All rights reserved.
//

import UIKit
import CloudKit

MarcusSmith

do {
    let data = UIImagePNGRepresentation(myImage)!
    try data.writeToURL(tempURL, options: NSDataWritingOptions.AtomicWrite)
    let asset = CKAsset(fileURL: tempURL)
    record["myImageKey"] = asset
}
catch {
    print("Error writing data", error)
}

MarcusSmith

if let asset = record["myImageKey"] as? CKAsset,
       data = NSData(contentsOfURL: asset.fileURL),
       image = UIImage(data: data)
{
    // Do something with the image
}

MarcusSmith

CKContainer.defaultContainer().fetchAllLongLivedOperationIDsWithCompletionHandler { (operationIDs, error) in
    guard let operationIDs = operationIDs else {
        print("error:", error)
        return
    }
    operationIDs.forEach { (operationID) in
        CKContainer.defaultContainer().fetchLongLivedOperationWithID(operationID) { (operation, error) in
            guard let operation = operation else {
                print("Unable to fetch operation with ID", operationID, "error:", error)
                return

MarcusSmith

let operation = CKModifyRecordsOperation(recordsToSave: largeRecords, recordIDsToDelete: nil)
operation.longLived = true
operation.longLivedOperationWasPersistedBlock = {
    print("Operation with ID", operation.operationID, "was persisted")
}
operation.modifyRecordsCompletionBlock = { (savedRecords, _, error) in
    print("Operation with ID", operation.operationID, "saved records", savedRecords, "error", error)
}
CKContainer.defaultContainer().publicCloudDatabase.addOperation(operation)

MarcusSmith

var allRecords: [CKRecord] = []
let operation = CKQueryOperation(query: query)
operation.recordFetchedBlock = { (record: CKRecord) in
  allRecords.append(record)
}
operation.queryCompletionBlock = { (cursor: CKQueryCursor?, error: NSError?) in
  // There is another batch of records to be fetched
  if let cursor = cursor {
      let newOperation = CKQueryOperation(cursor: cursor)
      newOperation.recordFetchedBlock = operation.recordFetchedBlock

MarcusSmith

let operation = CKModifyRecordsOperation(recordsToSave: someRecords, recordIDsToDelete: someRecordIDs)
operation.modifyRecordsCompletionBlock = { (savedRecords, deletedRecordIDs, error) in 
    // savedRecords is an array of saved CKRecords
    // deletedRecordIDs is an array of the CKRecordIDs for the deleted records
}
database.addOperation(operation)

MarcusSmith

let operation = CKFetchRecordsOperation(recordIDs: myRecordIDs)
operation.fetchRecordsCompletionBlock = { (recordsByRecordID, error) in
    // recordsByRecordID is a dictionary of records, keyed by their recordIDs
}
database.addOperation(operation)