我在 CloudKit 后端创建了一个 CKRecord 类型,其中包含一些与该类相关的属性。
我有字符串属性、字节和资产列表属性,所以存储一些图像(与单个记录相关的多个图像)。
现在我正在尝试存储一些图像,然后填充属性,然后尝试将其保存到 CloudKit,但它不起作用。
代码如下:
var images_array = [CKAsset]()
// append the an image to the array
images_array.append(CKAsset(fileURL: writeImage(image: selectedImage) as URL))
let record = CKRecord(recordType: recordName)
record["class_title"] = someString as CKRecordValue
record["class_body"] = someString as CKRecordValue
record["images_array"] = images_array as CKRecordValue
saveRecord(record)
func saveRecord(_ xrecord: CKRecord) {
let publicData = CKContainer.default().publicCloudDatabase
let record: [CKRecord] = [xrecord]
let saveOperation = CKModifyRecordsOperation.init(recordsToSave: record, recordIDsToDelete: nil)
saveOperation.perRecordCompletionBlock = {(record, error) -> Void in
if (error != nil) {
print("error")
}
}
publicData.add(saveOperation)
}
func writeImage(image: UIImage) -> URL {
let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
let fileURL = NSURL(fileURLWithPath: documentsURL.absoluteString).appendingPathComponent(".jpg")
if let imageData = image.lowestQualityJPEGNSData {
do {
try imageData.write(to: fileURL!)
} catch {
print("ERRO 001 = \(error.localizedDescription)")
}
}
return fileURL!
}
extension UIImage {
var uncompressedPNGData: Data? { return UIImagePNGRepresentation(self) }
var highestQualityJPEGNSData: Data? { return UIImageJPEGRepresentation(self, 1.0) }
var highQualityJPEGNSData: Data? { return UIImageJPEGRepresentation(self, 0.75) }
var mediumQualityJPEGNSData: Data? { return UIImageJPEGRepresentation(self, 0.5) }
var lowQualityJPEGNSData: Data? { return UIImageJPEGRepresentation(self, 0.25) }
var lowestQualityJPEGNSData:Data? { return UIImageJPEGRepresentation(self, 0.0) }
}
如果我只保存字符串,一切都会完美运行,但对于图像,它不会保存记录。
我知道追加可能有任何问题,或者我必须以其他方式保存数组,或者我不应该将其保存为 CKRecordValue。
您对如何实现这一目标有任何提示吗?
谢谢