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[英]Swift 4 sharing audio file (UIDocumentInteractionController)
[英]UIDocumentInteractionController change file name for Sharing
我使用以下代碼顯示PDF
的共享選項
self.documentController = UIDocumentInteractionController(url: url)
self.documentController.name = "Test name" // not working
self.documentController.presentOptionsMenu(from: self.shareButton, animated: true)
問題是我用日期戳保存了 PDF 文件名,以避免有兩個同名的文件,但是當顯示共享選項時,實際文件名出現了,
在這種情況下,我們可以創建一個臨時文件夾,該文件夾可以包含與 lastPathExtension 相同的文件,即 document.fileExtension,我們可以將這個新文件路徑傳遞給UIDocumentInteractionController.init(url: newFileUrl)
例如:
func openUnsupportedFileWithPath(documentName : String, fileurl : URL, fileExtension : String, aDocument: SILDocumentDB? = nil, sourceView: UIView? = nil) -> Void {
// Create new temporary path
let paths: String = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
var newFileUrl: String = paths.appending("/Downloads/TemporaryFolder)")
newFileUrl = newFileUrl.appendingFormat("%@","\(documentName)")
let destinationPathUrl : URL
do {
// Move newly filePath with new fileName and fileExtension
destinationPathUrl = URL(fileURLWithPath: destinanewFileUrltionPath)
try FileManager.default.moveItem(at: fileurl, to: destinationPathUrl)
} catch {
print(error)
}
//Pass newly filePath to UIDocumentInteractionController
documentInteractionController = UIDocumentInteractionController.init(url: newFileUrl)
documentInteractionController?.name = documentName
documentInteractionController?.delegate = self
let canPreview = documentInteractionController?.presentPreview(animated: true)
if (canPreview == false) {
let activityViewController = UIActivityViewController.init(activityItems: [fileurl], applicationActivities: nil)
activityViewController.setValue(documentName, forKey: "subject")
if ISIPAD {
activityViewController.popoverPresentationController?.sourceView = sourceView ?? self.view
}
self.present(activityViewController, animated: true, completion: nil)
}
}
並且 UIDocumentInteractionController 被解除,刪除documentInteractionControllerDidEndPreview(_ controller: UIDocumentInteractionController)
方法上的臨時documentInteractionControllerDidEndPreview(_ controller: UIDocumentInteractionController)
。
public func documentInteractionControllerDidEndPreview(_ controller: UIDocumentInteractionController) {
documentInteractionController = nil
let paths: String = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let filePath: String = paths.appending("/Downloads/TemporaryFolder)")
let _fileManager : FileManager = FileManager.default
if filePath.length > 0 {
if _fileManager.fileExists(atPath: filePath) {
do{
try _fileManager.removeItem(atPath: filePath)
}catch let error as NSError{
print("\(error.localizedDescription)")
}
}
}
}
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