在swift中实现文档选择器（iOS） [英] Implement Document Picker in swift (iOS)

问题描述

我想在我的iOS应用中选择任何类型的文件（.pdf，.docs，.xlsx，.jpeg，.txt，.rtf等）。点击上传按钮，我希望我的应用打开目录并选择文件（ DocumentsPicker ）

I want to pick a file of any type(.pdf, .docs, .xlsx, .jpeg, .txt, .rtf, etc) functionality in my iOS app. On clicking on Upload button, I want my app to open a directory and select files(DocumentsPicker)

@IBAction pickDocument(sender: UIButton) {
    //Open Document Picker
}

在 Swift中执行此操作的方法？

推荐答案

根据项目的功能，启用 iCloud 和密钥共享。

From your project's capabilities, enable both the iCloud and the Key-Sharing.

导入 MobileCoreServices 在你的类中，最后在你的UIViewController中扩展了以下三个类：

Import MobileCoreServices in your class and finally extended the following three classes inside your UIViewController :

UIDocumentMenuDelegate,UIDocumentPickerDelegate,UINavigationControllerDelegate

实现以下功能：

 public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
              let myURL = url as URL
              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)
    }

如何调用所有这些？将以下位代码添加到您的点击功能..

How to call all of this? Add the following bit of code to your click function..

func clickFunction(){

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

单击按钮。将弹出以下菜单..

Click your button. The following menu will pop up ..

在案例中DropBox。点击任何项目。您将被重定向回您的应用程序，并且该URL将记录在您的终端中。

In the case of DropBox. Upon clicking on any item. You will be redirected back to your app and the URL will be logged in your terminal.

根据需要操作documentTypes。在我的应用程序中，用户只允许使用Pdf。所以，适合自己。

Manipulate the documentTypes to your need. In my app, Users permitted to Pdf only. So, suit yourself.

kUTTypePDF
kUTTypePNG
kUTTypeJPEG
...

kUTTypePDF kUTTypePNG kUTTypeJPEG ...

此外，如果你想定制自己的菜单栏。添加以下代码并在处理程序中自定义您自己的函数

Also if you feel like customizing your own menu bar. Add the following code and customize your own function inside the handler

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

< a href =https://i.stack.imgur.com/vYx5c.png =nofollow noreferrer>

享受它。

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