Question

我正在使用UIDocumentPickerViewController构建文件选择器，我只想选择以下文件类型（需要禁用其他文件类型），

doc
docx
pdf
gdoc（Google doc文件格式）
txt
rtf

到目前为止，我的代码如下，

import UIKit
import MobileCoreServices

class DocumentPickerVC: UIViewController {

@IBAction func btnLocalTapped(sender: UIButton) {

    let types: [String] = [kUTTypeText as String, kUTTypePDF as String, "com.microsoft.word.doc", "org.openxmlformats.wordprocessingml.document"]
    let documentPicker = UIDocumentPickerViewController(documentTypes: types, in: .import)
    documentPicker.delegate = self
    documentPicker.modalPresentationStyle = .formSheet
    documentPicker.allowsMultipleSelection = true
    self.present(documentPicker, animated: true, completion: nil)
}

}

extension DocumentPickerVC: UIDocumentPickerDelegate {

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

}

我似乎无法弄清楚Google文档的UTCoreType是什么。

我浏览了https://developer.apple.com/library/archive/documentation/Miscellaneous/Reference/UTIRef/Articles/System-DeclaredUniformTypeIdentifiers.html处的列表，但没有运气。

作为第二次尝试找到UTCoreType的尝试，我尝试了以下操作，

通过如下更改类型来使为选择器解锁的所有文件，

让类型= [kUTTypeItem作为字符串]
使用选择器下载文件并将其移至文档目录
启用iTunes文件共享并复制到我的桌面
针对文件运行“ mdls”工具

命令：

$ mdls doc2.gdoc

输出：

kMDItemContentCreationDate         = 2018-10-15 23:07:02 +0000
kMDItemContentCreationDate_Ranking = 2018-10-15 00:00:00 +0000
kMDItemContentModificationDate     = 2018-10-15 23:07:05 +0000
kMDItemContentType                 = "dyn.ah62d4rv4ge80s3dtqq"
kMDItemContentTypeTree             = (
    "dyn.ah62d4rv4ge80s3dtqq",
    "public.data",
    "public.item"
)
kMDItemDateAdded                   = 2018-10-15 23:07:12 +0000
kMDItemDateAdded_Ranking           = 2018-10-15 00:00:00 +0000
kMDItemDisplayName                 = "doc2.gdoc"
kMDItemFSContentChangeDate         = 2018-10-15 23:07:05 +0000
kMDItemFSCreationDate              = 2018-10-15 23:07:02 +0000
kMDItemFSCreatorCode               = ""
kMDItemFSFinderFlags               = 0
kMDItemFSHasCustomIcon             = (null)
kMDItemFSInvisible                 = 0
kMDItemFSIsExtensionHidden         = 0
kMDItemFSIsStationery              = (null)
kMDItemFSLabel                     = 0
kMDItemFSName                      = "doc2.gdoc"
kMDItemFSNodeCount                 = (null)
kMDItemFSOwnerGroupID              = 20
kMDItemFSOwnerUserID               = 501
kMDItemFSSize                      = 16848
kMDItemFSTypeCode                  = ""
kMDItemInterestingDate_Ranking     = 2018-10-15 00:00:00 +0000
kMDItemKind                        = "Document"
kMDItemLogicalSize                 = 16848
kMDItemPhysicalSize                = 20480

尝试了该文件的kMDItemContentType，但无效

现在我没主意了。有什么想法吗？

使用UIDocumentPickerViewController

0 个答案: