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@carsten-klaffke
carsten-klaffke committed Sep 6, 2024
1 parent ff4ac48 commit 65e80fc
Showing 1 changed file with 122 additions and 86 deletions.
208 changes: 122 additions & 86 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -123,9 +123,9 @@ Code for the ShareViewController:
// Created by Carsten Klaffke on 05.07.20.
//

import UIKit
import Social
import MobileCoreServices
import Social
import UIKit

class ShareItem {

Expand All @@ -139,34 +139,49 @@ class ShareViewController: UIViewController {
private var shareItems: [ShareItem] = []

override public func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
super.viewDidAppear(animated)
self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}

private func sendData() {
let queryItems = shareItems.map {
[URLQueryItem(name: "title", value: $0.title?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
URLQueryItem(name: "description", value: ""),
URLQueryItem(name: "type", value: $0.type?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
URLQueryItem(name: "url", value: $0.url?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? "")]
let queryItems = shareItems.map {
[
URLQueryItem(
name: "title",
value: $0.title?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
URLQueryItem(name: "description", value: ""),
URLQueryItem(
name: "type",
value: $0.type?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
URLQueryItem(
name: "url",
value: $0.url?.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed) ?? ""),
]
}.flatMap({ $0 })

var urlComps = URLComponents(string: "mindlib://")!
var urlComps = URLComponents(string: "YOUR_APP_URL_SCHEME://")!
urlComps.queryItems = queryItems
openURL(urlComps.url!)
}

fileprivate func createSharedFileUrl(_ url: URL?) -> String {
let fileManager = FileManager.default
let copyFileUrl = fileManager.containerURL(forSecurityApplicationGroupIdentifier: "group.de.mindlib")!.absoluteString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)! + "/" + url!.lastPathComponent.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!

let copyFileUrl =
fileManager.containerURL(forSecurityApplicationGroupIdentifier: "YOUR_APP_GROUP_ID")!
.absoluteString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)! + url!
.lastPathComponent.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
try? Data(contentsOf: url!).write(to: URL(string: copyFileUrl)!)

return copyFileUrl
}

func saveScreenshot(_ image: UIImage) -> String {
func saveScreenshot(_ image: UIImage, _ index: Int) -> String {
let fileManager = FileManager.default
let copyFileUrl = fileManager.containerURL(forSecurityApplicationGroupIdentifier: "group.de.mindlib")!.absoluteString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)! + "/screenshot.png"

let copyFileUrl =
fileManager.containerURL(forSecurityApplicationGroupIdentifier: "group.SendIntentExample")!
.absoluteString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
+ "/screenshot_\(index).png"
do {
try image.pngData()?.write(to: URL(string: copyFileUrl)!)
return copyFileUrl
Expand All @@ -176,88 +191,109 @@ class ShareViewController: UIViewController {
}
}

fileprivate func handleTypeUrl(_ attachment: NSItemProvider)
async throws -> ShareItem
{
let results = try await attachment.loadItem(forTypeIdentifier: kUTTypeURL as String, options: nil)
let url = results as! URL?
let shareItem: ShareItem = ShareItem()

if url!.isFileURL {
shareItem.title = url!.lastPathComponent
shareItem.type = "application/" + url!.pathExtension.lowercased()
shareItem.url = createSharedFileUrl(url)
} else {
shareItem.title = url!.absoluteString
shareItem.url = url!.absoluteString
shareItem.type = "text/plain"
}

return shareItem
}

fileprivate func handleTypeText(_ attachment: NSItemProvider)
async throws -> ShareItem
{
let results = try await attachment.loadItem(forTypeIdentifier: kUTTypeText as String, options: nil)
let shareItem: ShareItem = ShareItem()
let text = results as! String
shareItem.title = text
shareItem.type = "text/plain"
return shareItem
}

fileprivate func handleTypeMovie(_ attachment: NSItemProvider)
async throws -> ShareItem
{
let results = try await attachment.loadItem(forTypeIdentifier: kUTTypeMovie as String, options: nil)
let shareItem: ShareItem = ShareItem()

let url = results as! URL?
shareItem.title = url!.lastPathComponent
shareItem.type = "video/" + url!.pathExtension.lowercased()
shareItem.url = createSharedFileUrl(url)
return shareItem
}

fileprivate func handleTypeImage(_ attachment: NSItemProvider, _ index: Int)
async throws -> ShareItem
{
let data = try await attachment.loadItem(forTypeIdentifier: kUTTypeImage as String, options: nil)

let shareItem: ShareItem = ShareItem()
switch data {
case let image as UIImage:
shareItem.title = "screenshot_\(index)"
shareItem.type = "image/png"
shareItem.url = self.saveScreenshot(image, index)
case let url as URL:
shareItem.title = url.lastPathComponent
shareItem.type = "image/" + url.pathExtension.lowercased()
shareItem.url = self.createSharedFileUrl(url)
default:
print("Unexpected image data:", type(of: data))
}
return shareItem
}

override public func viewDidLoad() {
super.viewDidLoad()

shareItems.removeAll()

let extensionItem = extensionContext?.inputItems[0] as! NSExtensionItem
let contentTypeURL = kUTTypeURL as String
let contentTypeText = kUTTypeText as String
let contentTypeMovie = kUTTypeMovie as String
let contentTypeImage = kUTTypeImage as String

for attachment in extensionItem.attachments as! [NSItemProvider] {

if attachment.hasItemConformingToTypeIdentifier(contentTypeURL) {
attachment.loadItem(forTypeIdentifier: contentTypeURL, options: nil, completionHandler: { [self] (results, error) in
guard let url = results as? URL else {
print("Expected URL but received: \(String(describing: results))")
return
}
let shareItem = ShareItem()
Task {
try await withThrowingTaskGroup(
of: ShareItem.self,
body: { taskGroup in

if url.isFileURL {
shareItem.title = url.lastPathComponent
shareItem.type = "application/" + url.pathExtension.lowercased()
shareItem.url = createSharedFileUrl(url)
} else {
shareItem.title = url.absoluteString
shareItem.url = url.absoluteString
shareItem.type = "text/plain"
for (index, attachment) in extensionItem.attachments!.enumerated() {
if attachment.hasItemConformingToTypeIdentifier(kUTTypeURL as String) {
taskGroup.addTask {
return try await self.handleTypeUrl(attachment)
}
} else if attachment.hasItemConformingToTypeIdentifier(kUTTypeText as String) {
taskGroup.addTask {
return try await self.handleTypeText(attachment)
}
} else if attachment.hasItemConformingToTypeIdentifier(kUTTypeMovie as String) {
taskGroup.addTask {
return try await self.handleTypeMovie(attachment)
}
} else if attachment.hasItemConformingToTypeIdentifier(kUTTypeImage as String) {
taskGroup.addTask {
return try await self.handleTypeImage(attachment, index)
}
}
}

self.shareItems.append(shareItem)
self.sendData()
})
} else if attachment.hasItemConformingToTypeIdentifier(contentTypeText) {
attachment.loadItem(forTypeIdentifier: contentTypeText, options: nil, completionHandler: { (results, error) in
guard let text = results as? String else {
print("Expected String but received: \(String(describing: results))")
return
for try await item in taskGroup {
self.shareItems.append(item)
}
let shareItem = ShareItem()
shareItem.title = text
shareItem.type = "text/plain"
self.shareItems.append(shareItem)
self.sendData()
})
} else if attachment.hasItemConformingToTypeIdentifier(contentTypeMovie) {
attachment.loadItem(forTypeIdentifier: contentTypeMovie, options: nil, completionHandler: { [self] (results, error) in
guard let url = results as? URL else {
print("Expected URL for Movie but received: \(String(describing: results))")
return
}
let shareItem = ShareItem()

shareItem.title = url.lastPathComponent
shareItem.type = "video/" + url.pathExtension.lowercased()
shareItem.url = createSharedFileUrl(url)

self.shareItems.append(shareItem)
self.sendData()
})
} else if attachment.hasItemConformingToTypeIdentifier(contentTypeImage) {
attachment.loadItem(forTypeIdentifier: contentTypeImage, options: nil) { (data, error) in
if let image = data as? UIImage {
let shareItem = ShareItem()
shareItem.title = "screenshot"
shareItem.type = "image/png"
shareItem.url = self.saveScreenshot(image)
self.shareItems.append(shareItem)
self.sendData()
} else if let url = data as? URL {
let shareItem = ShareItem()
shareItem.title = url.lastPathComponent
shareItem.type = "image/" + url.pathExtension.lowercased()
shareItem.url = self.createSharedFileUrl(url)
self.shareItems.append(shareItem)
self.sendData()
} else {
print("Unexpected image data: \(type(of: data))")
}
}
}

self.sendData()

}
}

Expand All @@ -271,9 +307,9 @@ class ShareViewController: UIViewController {
}
return false
}

}


```

The share extension is like a little standalone program, so to get to your app the extension has to make an openURL call. In order to make your app reachable by a URL, you have to define a URL scheme ([Register Your URL Scheme](https://developer.apple.com/documentation/uikit/inter-process_communication/allowing_apps_and_websites_to_link_to_your_content/defining_a_custom_url_scheme_for_your_app)). The code above calls a URL scheme named "YOUR_APP_URL_SCHEME" (first line in "didSelectPost"), so just replace this with your scheme!
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