从 URL 或路径获取文件？

Posted 2023-02-23

【中文标题】从 URL 或路径获取文件？

【英文标题】：Get file from Url or path?

【发布时间】：2018-01-29 05:38:53

【问题描述】：

我已集成 UIDocumentPickerDelegate 或 UIDocumentMenuDelegate， 我在从 URL 或 DocumentPicker 获取文件时遇到问题。如何在 ios swift 中解决这个问题？

【问题讨论】：

你遇到什么问题，写在这里。

我从 UIDocumentPickerDelegate 获取文件 url 但我需要获取文件。

Edit 您的问题包括您的相关代码（作为文本）并清楚地显示您需要帮助的地方。

什么样的文件？到目前为止，您的解决方案是什么？

我需要获取 .pdf、.txt、.apk 等文件。@Roy

【参考方案1】：

您可以轻松获取文件，

如果需要获取图片

    @IBAction func btn_Handler_iCloud(_ sender: Any) 
        let doc = UIDocumentMenuViewController(documentTypes: [String(kUTTypeImage)], in: .import)
        doc.delegate = self
        doc.modalPresentationStyle = .formSheet
        self.present(doc, animated: true, completion: nil)
    

    func documentMenu(_ documentMenu: UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) 
        documentPicker.delegate = self
        present(documentPicker, animated: true, completion: nil)
    

    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) 
        let data = try! Data(contentsOf: urls[0])
        imageview_Buaty.image = UIImage.init(data: data)
    

    func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) 
        dismiss(animated: true, completion: nil)
    

【参考方案2】：

从 UIDocumentPickerViewController 获取文档 URL 或数据：

func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL)  
    // Available from iOS 8.0 to iOS 11.0
    self.handleFileSelection(inUrl: url)// Here url is document's URL


func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) 
    // Available from iOS 11.0
    self.handleFileSelection(inUrl: urls.first!)  // Here urls is array of URLs


private func handleFileSelection(inUrl:URL) -> Void 
    do  
     // inUrl is the document's URL
        let data = try Data(contentsOf: inUrl) // Getting file data here
     catch 
        dLog(message: "document loading error")