实施文档选择器

问题描述 投票：0回答：10

我想在我的 iOS 应用程序中选择任何类型的文件（.pdf、.docs、.xlsx、.jpeg、.txt、.rtf、等）。单击 Upload 按钮时，我希望我的应用程序打开一个目录并选择文件 (DocumentsPicker

)

@IBAction pickDocument(sender: UIButton) { //Open Document Picker } 
有什么方法可以在 Swift 中做到这一点吗？

    



    
    ios
    
    swift
    
    uidocumentpickervc
    
    
10个回答

    

      
      
      

        

          

            

              
119
投票

              

            

          

        

        
iOS 17 略有更新：

仅添加...


import UIKit // nothing else
class Job: UIViewController, UIDocumentPickerDelegate {
   // delete "UIDocumentMenuDelegate"

然后...


@IBAction func tapSendFile() {

    let pdfs = UTType.types(tag: "pdf",
      tagClass: UTTagClass.filenameExtension, conformingTo: nil)
    let txts = UTType.types(tag: "txt",
      tagClass: UTTagClass.filenameExtension, conformingTo: nil)
    // as many of those as you wish, then:

    let doxy = UIDocumentPickerViewController(
                 forOpeningContentTypes: pdfs + txts)

    doxy.delegate = self
    self.present(doxy, animated: true, completion: nil)
}

最新语法：


func documentPicker(_ controller: UIDocumentPickerViewController,
                                     didPickDocumentsAt urls: [URL]) {
    print("IT WORKED")
}



iOS 14 更新：您不需要任何功能。只需创建一个具有适当类型的 UIDocumentPickerViewController
，实现委托，就完成了。


import UIKit
import MobileCoreServices
import UniformTypeIdentifiers

func selectFiles() {
    let types = UTType.types(tag: "json", 
                             tagClass: UTTagClass.filenameExtension, 
                             conformingTo: nil)
    let documentPickerController = UIDocumentPickerViewController(
            forOpeningContentTypes: types)
    documentPickerController.delegate = self
    self.present(documentPickerController, animated: true, completion: nil)
}




根据您的项目功能，启用 
iCloud
 和 
Key-Sharing
。




在您的类中导入 
MobileCoreServices
，然后在您的 
UIViewController
 中扩展以下三个类：


UIDocumentMenuDelegate,UIDocumentPickerDelegate,UINavigationControllerDelegate

实现以下功能：


public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
    guard let myURL = urls.first else {
        return
    }
    print("import result : \(myURL)")
}
      

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


func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
    print("view was cancelled")
    dismiss(animated: true, completion: nil)
}

你如何称呼这一切？将以下代码添加到您的点击函数中：


func clickFunction(){

let importMenu = UIDocumentMenuViewController(documentTypes: [String(kUTTypePDF)], in: .import)
    importMenu.delegate = self
    importMenu.modalPresentationStyle = .formSheet       
    self.present(importMenu, animated: true, completion: nil)
}

单击您的按钮。将弹出以下菜单..




以 Dropbox 为例。单击任何项目后。您将被重定向回您的应用程序，并且 URL 将记录在您的终端中。


根据您的需要操作文档类型。在我的应用程序中，用户仅允许使用 Pdf。所以，适合自己吧。


kUTTypePDF
kUTTypePNG
kUTTypeJPEG
...


如果您想自定义自己的菜单栏。添加以下代码并在处理程序中自定义您自己的函数


importMenu.addOption(withTitle: "Create New Document", image: nil, order: .first, handler: { print("New Doc Requested") })



享受它。

    



      

      
      
      

      

        

          

            

              
40
投票

              
            

          

        

        
您可以使用 
UIDocumentPickerViewController
 从“文件”应用程序或 iCloud Drive 获取文件。




    从 
  1. Key-value storage
     功能激活 
    iCloud Documents
     和 
    iCloud
    ：
    

    2. 





  1. 在要打开文档选择器的视图控制器上导入以下框架：
    

     import MobileCoreServices

 // For iOS 14+
 import UniformTypeIdentifiers

    

  2. 从
    UIDocumentPickerDelegate
    实现以下方法：
    

     func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
      // you get from the urls parameter the urls from the files selected
 }

    

  3. 创建一个 
    UIDocumentPickerViewController
     以显示文件选择器或 iCloud Drive：
    

    // Use this code if your are developing prior iOS 14
let types: [String] = [kUTTypePDF as String]
let documentPicker = UIDocumentPickerViewController(documentTypes: types, in: .import)
documentPicker.delegate = self
documentPicker.modalPresentationStyle = .formSheet
self.present(documentPicker, animated: true, completion: nil)

// For iOS 14+
let documentPicker = UIDocumentPickerViewController(forOpeningContentTypes: [UTType.item], asCopy: false)
documentPicker.delegate = self
documentPicker.modalPresentationStyle = .formSheet

self.present(documentPicker, animated: true, completion: nil)

    

    4. 

如果您希望用户可以将更多类型的文件导入到您的应用程序中，您必须在 
UTType
 
types
 中添加更多 
NSArray
。要查看所有可用的类型，您可以查看
UTType Docs

当文档选择器在 iOS 11 上打开并且您尝试选择 Google 云端硬盘中的文件时，该文件可能由于错误而被禁用：
http://www.openradar.me/24187873
    



      

      
      
      

      

        

          

            

              
24
投票

              
            

          

        

        
UIDocumentMenuViewController
 自 iOS11 起已弃用。当从模态视图控制器呈现时，我还发现它有问题。
这是使用选择器的直接方法：



import MobileCoreServices

private func attachDocument() {
    let types = [kUTTypePDF, kUTTypeText, kUTTypeRTF, kUTTypeSpreadsheet]
    let importMenu = UIDocumentPickerViewController(documentTypes: types as [String], in: .import)

    if #available(iOS 11.0, *) {
        importMenu.allowsMultipleSelection = true
    }

    importMenu.delegate = self
    importMenu.modalPresentationStyle = .formSheet

    present(importMenu, animated: true)
}

extension AViewController: UIDocumentPickerDelegate, UINavigationControllerDelegate {
    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
        viewModel.attachDocuments(at: urls)
    }

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



像往常一样，不要忘记添加 iCloud 支持：

    



      

      
      
      

      

        

          

            

              
9
投票

              
            

          

        

        
UIDocumentPickerViewController(documentTypes: [String], in: UIDocumentPickerMode) 在 iOS 14.0 中已被
弃用

现在是 UIDocumentPickerViewController(forOpeningContentTypes: 
[UTType]
)


ContentTypes 可以是以下任意项或以下项的组合：


UTType.image, UTType.text, UTType.plainText, UTType.utf8PlainText,    UTType.utf16ExternalPlainText, UTType.utf16PlainText,    UTType.delimitedText, UTType.commaSeparatedText,    UTType.tabSeparatedText, UTType.utf8TabSeparatedText, UTType.rtf,    UTType.pdf, UTType.webArchive, UTType.image, UTType.jpeg,    UTType.tiff, UTType.gif, UTType.png, UTType.bmp, UTType.ico,    UTType.rawImage, UTType.svg, UTType.livePhoto, UTType.movie,    UTType.video, UTType.audio, UTType.quickTimeMovie, UTType.mpeg,    UTType.mpeg2Video, UTType.mpeg2TransportStream, UTType.mp3,    UTType.mpeg4Movie, UTType.mpeg4Audio, UTType.avi, UTType.aiff,    UTType.wav, UTType.midi, UTType.archive, UTType.gzip, UTType.bz2,    UTType.zip, UTType.appleArchive, UTType.spreadsheet, UTType.epub

这对我来说是这样的：


let supportedTypes = [myArrayFromAnyOfTheAbove]

func openDocument() {
    let documentPicker = UIDocumentPickerViewController(forOpeningContentTypes: supportedTypes, asCopy: true)
    documentPicker.delegate = self
    documentPicker.allowsMultipleSelection = false
    documentPicker.shouldShowFileExtensions = true
    present(documentPicker, animated: true, completion: nil)
}

    



      

      
      
      

      

        

          

            

              
4
投票

              
            

          

        

        
let docsTypes = ["public.text",
                          "com.apple.iwork.pages.pages",
                          "public.data",
                          "kUTTypeItem",
                          "kUTTypeContent",
                          "kUTTypeCompositeContent",
                          "kUTTypeData",
                          "public.database",
                          "public.calendar-event",
                          "public.message",
                          "public.presentation",
                          "public.contact",
                          "public.archive",
                          "public.disk-image",
                          "public.plain-text",
                          "public.utf8-plain-text",
                          "public.utf16-external-plain-​text",
                          "public.utf16-plain-text",
                          "com.apple.traditional-mac-​plain-text",
                          "public.rtf",
                          "com.apple.ink.inktext",
                          "public.html",
                          "public.xml",
                          "public.source-code",
                          "public.c-source",
                          "public.objective-c-source",
                          "public.c-plus-plus-source",
                          "public.objective-c-plus-​plus-source",
                          "public.c-header",
                          "public.c-plus-plus-header",
                          "com.sun.java-source",
                          "public.script",
                          "public.assembly-source",
                          "com.apple.rez-source",
                          "public.mig-source",
                          "com.apple.symbol-export",
                          "com.netscape.javascript-​source",
                          "public.shell-script",
                          "public.csh-script",
                          "public.perl-script",
                          "public.python-script",
                          "public.ruby-script",
                          "public.php-script",
                          "com.sun.java-web-start",
                          "com.apple.applescript.text",
                          "com.apple.applescript.​script",
                          "public.object-code",
                          "com.apple.mach-o-binary",
                          "com.apple.pef-binary",
                          "com.microsoft.windows-​executable",
                          "com.microsoft.windows-​dynamic-link-library",
                          "com.sun.java-class",
                          "com.sun.java-archive",
                          "com.apple.quartz-​composer-composition",
                          "org.gnu.gnu-tar-archive",
                          "public.tar-archive",
                          "org.gnu.gnu-zip-archive",
                          "org.gnu.gnu-zip-tar-archive",
                          "com.apple.binhex-archive",
                          "com.apple.macbinary-​archive",
                          "public.url",
                          "public.file-url",
                          "public.url-name",
                          "public.vcard",
                          "public.image",
                          "public.fax",
                          "public.jpeg",
                          "public.jpeg-2000",
                          "public.tiff",
                          "public.camera-raw-image",
                          "com.apple.pict",
                          "com.apple.macpaint-image",
                          "public.png",
                          "public.xbitmap-image",
                          "com.apple.quicktime-image",
                          "com.apple.icns",
                          "com.apple.txn.text-​multimedia-data",
                          "public.audiovisual-​content",
                          "public.movie",
                          "public.video",
                          "com.apple.quicktime-movie",
                          "public.avi",
                          "public.mpeg",
                          "public.mpeg-4",
                          "public.3gpp",
                          "public.3gpp2",
                          "public.audio",
                          "public.mp3",
                          "public.mpeg-4-audio",
                          "com.apple.protected-​mpeg-4-audio",
                          "public.ulaw-audio",
                          "public.aifc-audio",
                          "public.aiff-audio",
                          "com.apple.coreaudio-​format",
                          "public.directory",
                          "public.folder",
                          "public.volume",
                          "com.apple.package",
                          "com.apple.bundle",
                          "public.executable",
                          "com.apple.application",
                          "com.apple.application-​bundle",
                          "com.apple.application-file",
                          "com.apple.deprecated-​application-file",
                          "com.apple.plugin",
                          "com.apple.metadata-​importer",
                          "com.apple.dashboard-​widget",
                          "public.cpio-archive",
                          "com.pkware.zip-archive",
                          "com.apple.webarchive",
                          "com.apple.framework",
                          "com.apple.rtfd",
                          "com.apple.flat-rtfd",
                          "com.apple.resolvable",
                          "public.symlink",
                          "com.apple.mount-point",
                          "com.apple.alias-record",
                          "com.apple.alias-file",
                          "public.font",
                          "public.truetype-font",
                          "com.adobe.postscript-font",
                          "com.apple.truetype-​datafork-suitcase-font",
                          "public.opentype-font",
                          "public.truetype-ttf-font",
                          "public.truetype-collection-​font",
                          "com.apple.font-suitcase",
                          "com.adobe.postscript-lwfn​-font",
                          "com.adobe.postscript-pfb-​font",
                          "com.adobe.postscript.pfa-​font",
                          "com.apple.colorsync-profile",
                          "public.filename-extension",
                          "public.mime-type",
                          "com.apple.ostype",
                          "com.apple.nspboard-type",
                          "com.adobe.pdf",
                          "com.adobe.postscript",
                          "com.adobe.encapsulated-​postscript",
                          "com.adobe.photoshop-​image",
                          "com.adobe.illustrator.ai-​image",
                          "com.compuserve.gif",
                          "com.microsoft.bmp",
                          "com.microsoft.ico",
                          "com.microsoft.word.doc",
                          "com.microsoft.excel.xls",
                          "com.microsoft.powerpoint.​ppt",
                          "com.microsoft.waveform-​audio",
                          "com.microsoft.advanced-​systems-format",
                          "com.microsoft.windows-​media-wm",
                          "com.microsoft.windows-​media-wmv",
                          "com.microsoft.windows-​media-wmp",
                          "com.microsoft.windows-​media-wma",
                          "com.microsoft.advanced-​stream-redirector",
                          "com.microsoft.windows-​media-wmx",
                          "com.microsoft.windows-​media-wvx",
                          "com.microsoft.windows-​media-wax",
                          "com.apple.keynote.key",
                          "com.apple.keynote.kth",
                          "com.truevision.tga-image",
                          "com.sgi.sgi-image",
                          "com.ilm.openexr-image",
                          "com.kodak.flashpix.image",
                          "com.j2.jfx-fax",
                          "com.js.efx-fax",
                          "com.digidesign.sd2-audio",
                          "com.real.realmedia",
                          "com.real.realaudio",
                          "com.real.smil",
                          "com.allume.stuffit-archive",
                          "org.openxmlformats.wordprocessingml.document",
                          "com.microsoft.powerpoint.​ppt",
                          "org.openxmlformats.presentationml.presentation",
                          "com.microsoft.excel.xls",
                          "org.openxmlformats.spreadsheetml.sheet",
                         
    
  ]
let documentPicker = UIDocumentPickerViewController(documentTypes: Utils.docsTypes, in: .import)
    documentPicker.delegate = self
    documentPicker.allowsMultipleSelection = true
    present(documentPicker, animated: true, completion: nil)

    



      

      
      
      

      

        

          

            

              
3
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我遇到的困难是如何为 PickerView 指定一些特定格式，例如 .pptx 和 .xlsx 文件。下面是一些代码，用于创建具有一些常用类型的 PickerView...



let types: [String] = [
    kUTTypeJPEG as String,
    kUTTypePNG as String,
    "com.microsoft.word.doc",
    "org.openxmlformats.wordprocessingml.document",
    kUTTypeRTF as String,
    "com.microsoft.powerpoint.​ppt",
    "org.openxmlformats.presentationml.presentation",
    kUTTypePlainText as String,
    "com.microsoft.excel.xls",
    "org.openxmlformats.spreadsheetml.sheet",
    kUTTypePDF as String,
    kUTTypeMP3 as String
]
let documentPicker = UIDocumentPickerViewController(documentTypes: types, in: .import)
documentPicker.delegate = self
documentPicker.modalPresentationStyle = .formSheet
self.present(documentPicker, animated: true, completion: nil)



我发现有两个地方对于整理此列表很有用：



https://developer.apple.com/library/archive/documentation/Miscellaneous/Reference/UTIRef/Articles/System-DeclaredUniformTypeIdentifiers.html


https://escapetech.eu/manuals/qdrop/uti.html


希望对某人有帮助！

    



      

      
      
      

      

        

          

            

              
2
投票

              
            

          

        

        
这是 UIDocumentPickerViewController 的 SwiftUI 版本。


感谢这篇博文：
https://capps.tech/blog/read-files-with-documentpicker-in-swiftui

我只是在这里发布代码，以防博客文章消失，因此它被保留。


（我稍微调整了代码以复制所选的证书文件并将数据写入Library文件夹；在博客中，它复制文本文件的内容。）


import SwiftUI
    
struct ContentView: View {
@State var fileContent:Data = Data()
@State var showDocumentPicker = false

var body: some View {
        
    Button() {
        showDocumentPicker = true
    } label: {
        Text("click me to show file browser")
    }
    .sheet(isPresented: self.$showDocumentPicker) {
        DocumentPicker(fileContent: $fileContent)
    }
}
}

struct DocumentPicker: UIViewControllerRepresentable {

    @Binding var fileContent: Data
    
    func makeCoordinator() -> DocumentPickerCoordinator {
        return DocumentPickerCoordinator(fileContent: $fileContent)
    }
    
    func makeUIViewController(context:
        UIViewControllerRepresentableContext<DocumentPicker>) ->
    UIDocumentPickerViewController {
        //The file types like ".pkcs12" are listed here:
        //https://developer.apple.com/documentation/uniformtypeidentifiers/system_declared_uniform_type_identifiers?changes=latest_minor
        let controller: UIDocumentPickerViewController = UIDocumentPickerViewController(forOpeningContentTypes: [.pkcs12], asCopy: true)
        controller.delegate = context.coordinator
    return controller
    }
    
    func updateUIViewController(_ uiViewController: UIDocumentPickerViewController, context: UIViewControllerRepresentableContext<DocumentPicker>) {
        print("update")
    }
} //struct

class DocumentPickerCoordinator: NSObject, UIDocumentPickerDelegate, UINavigationControllerDelegate {

    @Binding var fileContent: Data
    
    init(fileContent: Binding<Data>) {
        _fileContent = fileContent
    }

    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
        let fileURL = urls[0]
        
        let certData = try! Data(contentsOf: fileURL)
        
        if let documentsPathURL = FileManager.default.urls(for: .libraryDirectory, in: .userDomainMask).first {
            let certURL = documentsPathURL.appendingPathComponent("certFile.pfx")
            
            try? certData.write(to: certURL)
        }

    }
}

    



      

      
      
      

      

        

          

            

              
1
投票

              
            

          

        

        
这将帮助您实现下载/上传功能



UIDocumentMenuViewController *importMenu = [[UIDocumentMenuViewController alloc] initWithDocumentTypes:@[@"public.item"] inMode:UIDocumentPickerModeImport | UIDocumentPickerModeExportToService];



欲了解更多信息，请阅读
Apple 文档
    



      

      
      
      

      

        

          

            

              
1
投票

              
            

          

        

        
iCloud 访问所有类型的文件#



func openiCloudDocuments(){
    let importMenu = UIDocumentPickerViewController(documentTypes: [String("public.data")], in: .import)
    importMenu.delegate = self
    importMenu.modalPresentationStyle = .formSheet
    self.present(importMenu, animated: true, completion: nil)
}

    



      

      
      
      

      

        

          

            

              
-1
投票

              
            

          

        

        
您可以使用 
NSURLSession
 来实现您所描述的内容。



您必须将显示的目标目录限制为应用程序的文档目录。应用程序没有对文件系统的完全访问权限。

    



      

      
    

  

  

    
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