應用程序不重新創建iCloud Drive文件夾

Question

我正在構建一個將其文件保存到用戶的iCloud Drive文件夾的應用程序。在我刪除iCloud Drive中的應用程序文件夾以查看會發生什麼之前，一切都一直很好。從那以後，每次打開應用程序，它都會嘗試將我的示例文件保存在iCloud中，但它不起作用（reloadiCloud（）函數被設置爲在ViewWillAppear中運行）。有什麼我需要做的創建iCloud Drive文件夾？我的代碼如下。

func reloadiCloud() { 
    ubiquityURL = filemgr.url(forUbiquityContainerIdentifier: nil) 

    guard ubiquityURL != nil else { 
     print("Unable to access iCloud Account") 
     return 
    } 

    ubiquityURL = ubiquityURL?.appendingPathComponent("Documents") 

    metaDataQuery = NSMetadataQuery() 

    metaDataQuery?.predicate = NSPredicate(format: "NOT %K.pathExtension = ''", NSMetadataItemFSNameKey) 
    metaDataQuery?.searchScopes = [NSMetadataQueryUbiquitousDocumentsScope] 

    NotificationCenter.default.addObserver(self, selector: #selector(ViewController.metadataQueryDidFinishGathering), name: NSNotification.Name.NSMetadataQueryDidFinishGathering, object: metaDataQuery!) 

    metaDataQuery!.start() 
} 

func metadataQueryDidFinishGathering(notification: NSNotification) -> Void { 
    let query: NSMetadataQuery = notification.object as! NSMetadataQuery 

    query.disableUpdates() 

    NotificationCenter.default.removeObserver(self, name: NSNotification.Name.NSMetadataQueryDidFinishGathering, object: query) 

    query.stop() 

    if query.resultCount > 0 { 
     fileList = [] 
     for var i in (0..<query.resultCount) { 
      let currentFileURL = query.value(ofAttribute: NSMetadataItemURLKey, forResultAt: i) as! URL 
      fileList.append(currentFileURL.lastPathComponent) 
      tableView.reloadData() 
     } 
     tableView.reloadData() 
     print(fileList) 
    } else { 
     let sampleFile = Bundle.main.url(forResource: "Sample", withExtension: "pdf")! 
     movetoiCloud(forURL: sampleFile) 
    } 
} 



func movetoiCloud(forURL: URL) { 
    let fileName = forURL.lastPathComponent 
    ubiquityURL = filemgr.url(forUbiquityContainerIdentifier: nil)?.appendingPathComponent("Documents/\(fileName)") 

    //Check if the filename exists and add "copy" to the new version 
    for var i in (0..<fileList.count) { 
     if fileList[i] == forURL.lastPathComponent { 
      let base = ubiquityURL?.absoluteURL.deletingLastPathComponent() 
      let endIndex = fileName.index(fileName.endIndex, offsetBy: -4) 

      let truncatedExtension = fileName.substring(from: endIndex) 
      let truncatedName = fileName.substring(to: endIndex).appending(" copy").appending(truncatedExtension) 

      ubiquityURL = base?.appendingPathComponent(truncatedName) 
      print("New ubiquity URL: \(ubiquityURL)") 
     } 
    } 

    do { 
     try filemgr.setUbiquitous(true, itemAt: forURL, destinationURL: (ubiquityURL)!) 
     reloadiCloud() 
     print("Move to iCloud OK") 
    } catch let error { 
     print("moveToiCloud failed: \(error.localizedDescription)") 
    } 
} 

Answer 1

嘗試更新信息plist中的捆綁號碼和版本，需要增加這些值才能使icloud添加生效。