我想使用 iPhone 上的 Share Sheet 功能共享我的应用程序中本地的一些文件。我在 UIWebView 中显示该文件，当用户单击共享表时，我想显示选项(电子邮件、WhatsApp 等)以共享在 UIWebView 上显示的文件>。我知道我们可以使用

func displayShareSheet(shareContent:String) {                                                                           
    let activityViewController = UIActivityViewController(activityItems: [shareContent as NSString], applicationActivities: nil)
    presentViewController(activityViewController, animated: true, completion: {})    
}

例如分享一个字符串。如何更改此代码以共享文档？

最佳答案

Swift 4.2 和 Swift 5

如果目录中已有文件并想共享它，只需将它的 URL 添加到 activityItems 中:

let fileURL = NSURL(fileURLWithPath: "The path where the file you want to share is located")

// Create the Array which includes the files you want to share
var filesToShare = [Any]()

// Add the path of the file to the Array
filesToShare.append(fileURL)

// Make the activityViewContoller which shows the share-view
let activityViewController = UIActivityViewController(activityItems: filesToShare, applicationActivities: nil)

// Show the share-view
self.present(activityViewController, animated: true, completion: nil)

如果需要制作文件:

我正在使用此扩展从 Data 生成文件(阅读代码中的注释以了解其工作原理):

在 typedef 的回答中，获取当前文档目录:

/// Get the current directory
///
/// - Returns: the Current directory in NSURL
func getDocumentsDirectory() -> NSString {
    let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
    let documentsDirectory = paths[0]
    return documentsDirectory as NSString
}

数据的扩展:

extension Data {

    /// Data into file
    ///
    /// - Parameters:
    ///   - fileName: the Name of the file you want to write
    /// - Returns: Returns the URL where the new file is located in NSURL
    func dataToFile(fileName: String) -> NSURL? {

        // Make a constant from the data
        let data = self

        // Make the file path (with the filename) where the file will be loacated after it is created
        let filePath = getDocumentsDirectory().appendingPathComponent(fileName)

        do {
            // Write the file from data into the filepath (if there will be an error, the code jumps to the catch block below)
            try data.write(to: URL(fileURLWithPath: filePath))

            // Returns the URL where the new file is located in NSURL
            return NSURL(fileURLWithPath: filePath)

        } catch {
            // Prints the localized description of the error from the do block
            print("Error writing the file: \(error.localizedDescription)")
        }

        // Returns nil if there was an error in the do-catch -block
        return nil

    }

}

使用示例:

分享图片文件:

// Your image
let yourImage = UIImage()

在 png 文件中

// Convert the image into png image data
let pngImageData = yourImage.pngData()

// Write the png image into a filepath and return the filepath in NSURL
let pngImageURL = pngImageData?.dataToFile(fileName: "nameOfYourImageFile.png")

// Create the Array which includes the files you want to share
var filesToShare = [Any]()

// Add the path of png image to the Array
filesToShare.append(pngImageURL!)

// Make the activityViewContoller which shows the share-view
let activityViewController = UIActivityViewController(activityItems: filesToShare, applicationActivities: nil)

// Show the share-view
self.present(activityViewController, animated: true, completion: nil)

在 jpg 文件中

// Convert the image into jpeg image data. compressionQuality is the quality-compression ratio in % (from 0.0 (0%) to 1.0 (100%)); 1 is the best quality but have bigger filesize
let jpgImageData = yourImage.jpegData(compressionQuality: 1.0)

// Write the jpg image into a filepath and return the filepath in NSURL
let jpgImageURL = jpgImageData?.dataToFile(fileName: "nameOfYourImageFile.jpg")

// Create the Array which includes the files you want to share
var filesToShare = [Any]()

// Add the path of jpg image to the Array
filesToShare.append(jpgImageURL!)

// Make the activityViewContoller which shows the share-view
let activityViewController = UIActivityViewController(activityItems: filesToShare, applicationActivities: nil)

// Show the share-view
self.present(activityViewController, animated: true, completion: nil)

共享文本文件:

// Your String including the text you want share in a file
let text = "yourText"

// Convert the String into Data
let textData = text.data(using: .utf8)

// Write the text into a filepath and return the filepath in NSURL
// Specify the file type you want the file be by changing the end of the filename (.txt, .json, .pdf...)
let textURL = textData?.dataToFile(fileName: "nameOfYourFile.txt")

// Create the Array which includes the files you want to share
var filesToShare = [Any]()

// Add the path of the text file to the Array
filesToShare.append(textURL!)

// Make the activityViewContoller which shows the share-view
let activityViewController = UIActivityViewController(activityItems: filesToShare, applicationActivities: nil)

// Show the share-view
self.present(activityViewController, animated: true, completion: nil)

其他文件:

您可以将任何Data 格式的文件制作成文件，据我所知，Swift 中的几乎所有内容都可以转换为Data，例如String , Int, Double, Any...:

// the Data you want to share as a file
let data = Data()

// Write the data into a filepath and return the filepath in NSURL
// Change the file-extension to specify the filetype (.txt, .json, .pdf, .png, .jpg, .tiff...)
let fileURL = data.dataToFile(fileName: "nameOfYourFile.extension")

// Create the Array which includes the files you want to share
var filesToShare = [Any]()

// Add the path of the file to the Array
filesToShare.append(fileURL!)

// Make the activityViewContoller which shows the share-view
let activityViewController = UIActivityViewController(activityItems: filesToShare, applicationActivities: nil)

// Show the share-view
self.present(activityViewController, animated: true, completion: nil)

关于ios - 如何在 iOS 中使用共享表共享文件？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35851118/