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我试图将文件存储在用户iCloud驱动器。 将文件保存在其iCloud驱动器中后，只要我不重新安装应用程序，就可以检索它。我将路径存储到NSUbiquitousKeyValueStore中的文件。应用程序的iCloud文档目录失败后重新安装应用程序加载文件
代码来保存文件：
let data = UIImagePNGRepresentation(finalImage)
let filename = "sticker\((NSUbiquitousKeyValueStore.default().longLong(forKey: "stickerCount"))+1).png"
let filenamePath = self.getDocumentsDirectory().appendingPathComponent(filename)
NSUbiquitousKeyValueStore.default().set(NSUbiquitousKeyValueStore.default().longLong(forKey: "stickerCount")+1, forKey: "stickerCount")
var filenames : NSMutableArray!
if !(NSUbiquitousKeyValueStore.default().bool(forKey: "createdArray")){
NSUbiquitousKeyValueStore.default().set(true, forKey: "createdArray")
filenames = NSMutableArray()
}else{
filenames = (NSUbiquitousKeyValueStore.default().array(forKey: "fileNames")! as NSArray).mutableCopy() as! NSMutableArray
}
filenames.add(filename)
NSUbiquitousKeyValueStore.default().set(filenames, forKey: "fileNames")
NSUbiquitousKeyValueStore.default().synchronize()
try? data?.write(to: filenamePath)
这是代码来获取文件：
func loadTheStickers() {
stickerNames.removeAllObjects()
stickers.removeAllObjects()
var filenames : NSMutableArray!
if !(NSUbiquitousKeyValueStore.default().bool(forKey: "createdArray")){
NSUbiquitousKeyValueStore.default().set(true, forKey: "createdArray")
filenames = NSMutableArray()
}else{
filenames = (NSUbiquitousKeyValueStore.default().array(forKey: "fileNames")! as NSArray).mutableCopy() as! NSMutableArray
}
for stickerName in filenames {
stickerNames.add(stickerName)
let url = getDocumentsDirectory().appendingPathComponent(stickerName as! String)
stickers.add(url)
}
}
而且我得到的网址，所以NSUbiquitousKeyValueStore工作正常，但是如果我重新安装应用程序，imageFromUrl不会返回图像，因此它不存在。我简单地使用这行代码：
cell.imageView.image = UIImage(contentsOfFile: (stickers[indexPath.row] as! URL).path)
，并再次它完美的作品，直到我尝试重新安装应用程序。
这里是我用来获取到iCloud的目录路径类：
class CloudDataManager {
static let sharedInstance = CloudDataManager() // Singleton
struct DocumentsDirectory {
static let localDocumentsURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: groupID)
static let iCloudDocumentsURL = FileManager.default.url(forUbiquityContainerIdentifier: iCloudContainerID)?.appendingPathComponent("Documents")
}
// Return the Document directory (Cloud OR Local)
// To do in a background thread
func getDocumentDiretoryURL() -> URL {
if isCloudEnabled() {
if !FileManager.default.fileExists(atPath: (DocumentsDirectory.iCloudDocumentsURL?.path)!){
do {
try FileManager.default.createDirectory(at: DocumentsDirectory.iCloudDocumentsURL!, withIntermediateDirectories: true, attributes: nil)
}catch{
NSLog("Error")
}
}
NSLog("\(DocumentsDirectory.iCloudDocumentsURL!)")
return DocumentsDirectory.iCloudDocumentsURL!
} else {
NSLog("\(DocumentsDirectory.localDocumentsURL!)")
return DocumentsDirectory.localDocumentsURL!
}
}
// Return true if iCloud is enabled
func isCloudEnabled() -> Bool {
if DocumentsDirectory.iCloudDocumentsURL != nil { return true }
else { return false }
}
// Delete All files at URL
func deleteFilesInDirectory(url: URL?) {
let fileManager = FileManager.default
let enumerator = fileManager.enumerator(atPath: url!.path)
while let file = enumerator?.nextObject() as? String {
do {
try fileManager.removeItem(at: url!.appendingPathComponent(file))
print("Files deleted")
} catch let error as NSError {
print("Failed deleting files : \(error)")
}
}
}
// Copy local files to iCloud
// iCloud will be cleared before any operation
// No data merging
func copyFileToCloud() {
if isCloudEnabled() {
deleteFilesInDirectory(url: DocumentsDirectory.iCloudDocumentsURL!) // Clear all files in iCloud Doc Dir
let fileManager = FileManager.default
let enumerator = fileManager.enumerator(atPath: (DocumentsDirectory.localDocumentsURL?.path)!)
while let file = enumerator?.nextObject() as? String {
do {
try fileManager.copyItem(at: (DocumentsDirectory.localDocumentsURL?.appendingPathComponent(file))!, to: DocumentsDirectory.iCloudDocumentsURL!.appendingPathComponent(file))
print("Copied to iCloud")
} catch let error as NSError {
print("Failed to move file to Cloud : \(error)")
}
}
}
}
// Copy iCloud files to local directory
// Local dir will be cleared
// No data merging
func copyFileToLocal() {
if isCloudEnabled() {
deleteFilesInDirectory(url: DocumentsDirectory.localDocumentsURL)
let fileManager = FileManager.default
let enumerator = fileManager.enumerator(atPath: DocumentsDirectory.iCloudDocumentsURL!.path)
while let file = enumerator?.nextObject() as? String {
do {
try fileManager.copyItem(at: DocumentsDirectory.iCloudDocumentsURL!.appendingPathComponent(file), to: (DocumentsDirectory.localDocumentsURL?.appendingPathComponent(file))!)
print("Moved to local dir")
} catch let error as NSError {
print("Failed to move file to local dir : \(error)")
}
}
}
}
}
和我检查，它返回正确的URL中的iCloud文档目录。 所以我的问题是问题在哪里，我如何纠正代码，因此重新安装应用程序或其他设备后，文件是availabla，因为atm iCloud目录不比简单地存储在本地Documents目录更好。