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Fixes #15. Adding code to handle generic data that is shared if it is…
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… a url.
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@JoshJuncker
JoshJuncker committed Jul 6, 2022
1 parent c700a91 commit d700906
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2 changes: 2 additions & 0 deletions share_handler/CHANGELOG.md
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@@ -1,3 +1,5 @@
# 0.0.9
Fix for sharing file from safari. Updated readme accordingly.
# 0.0.8
Fixes and updates for README
# 0.0.7
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127 changes: 75 additions & 52 deletions share_handler/README.md
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Expand Up @@ -8,6 +8,8 @@ First, add `share_handler` as a [dependency in your pubspec.yaml file](https://f

### iOS

****Note - Currently does not work on iOS Simulators. Test on a physical device***

1. Add the following to `<project root>/ios/Runner/Info.plist`. It registers your app to open via a deep link that will be launched from the Share Extension. Also, for sharing photos, you will need access to the photo library.

```xml
Expand Down Expand Up @@ -153,7 +155,7 @@ import MobileCoreServices
import Photos
import Intents
import share_handler_ios_models

class ShareViewController: SLComposeServiceViewController {
static var hostAppBundleIdentifier = ""
static var appGroupId = ""
Expand All @@ -164,16 +166,17 @@ class ShareViewController: SLComposeServiceViewController {
let textContentType = UTType.text.identifier
let urlContentType = UTType.url.identifier
let fileURLType = UTType.fileURL.identifier
let dataContentType = UTType.data.identifier
var sharedAttachments: [SharedAttachment] = []
lazy var userDefaults: UserDefaults = {
return UserDefaults(suiteName: ShareViewController.appGroupId)!
}()


override func isContentValid() -> Bool {
return true
}

private func loadIds() {
// loading Share extension App Id
let shareExtensionAppBundleIdentifier = Bundle.main.bundleIdentifier!;
Expand All @@ -188,21 +191,21 @@ class ShareViewController: SLComposeServiceViewController {
// loading custom AppGroupId from Build Settings or use group.<hostAppBundleIdentifier>
ShareViewController.appGroupId = (Bundle.main.object(forInfoDictionaryKey: "AppGroupId") as? String) ?? "group.\(ShareViewController.hostAppBundleIdentifier)";
}

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

// load group and app id from build info
loadIds();
}

override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
Task {
await handleInputItems()
}
}

func handleInputItems() async {
if let content = extensionContext!.inputItems[0] as? NSExtensionItem {
if let contents = content.attachments {
Expand All @@ -218,59 +221,61 @@ class ShareViewController: SLComposeServiceViewController {
try await handleUrl(content: content, attachment: attachment, index: index)
} else if attachment.hasItemConformingToTypeIdentifier(textContentType) {
try await handleText(content: content, attachment: attachment, index: index)
} else if attachment.hasItemConformingToTypeIdentifier(dataContentType) {
try await handleData(content: content, attachment: attachment, index: index)
} else {
print("Attachment not handled with registered type identifiers: \(attachment.registeredTypeIdentifiers)")
}
} catch {
self.dismissWithError()
}

}
}
redirectToHostApp()
}
}

override func didSelectPost() {
print("didSelectPost");
}

override func configurationItems() -> [Any]! {
return []
}

private func getNewFileUrl(fileName: String) -> URL {
let newFileUrl = FileManager.default
.containerURL(forSecurityApplicationGroupIdentifier: ShareViewController.appGroupId)!
.appendingPathComponent(fileName)
return newFileUrl
}

private func handleText (content: NSExtensionItem, attachment: NSItemProvider, index: Int) async throws {
let data = try await attachment.loadItem(forTypeIdentifier: textContentType, options: nil)

if let item = data as? String {
sharedText.append(item)
} else {
dismissWithError()
}

}

private func handleUrl (content: NSExtensionItem, attachment: NSItemProvider, index: Int) async throws {
let data = try await attachment.loadItem(forTypeIdentifier: urlContentType, options: nil)

if let item = data as? URL {
sharedText.append(item.absoluteString)
} else {
dismissWithError()
}

}

private func handleImages (content: NSExtensionItem, attachment: NSItemProvider, index: Int) async throws {
let data = try await attachment.loadItem(forTypeIdentifier: imageContentType, options: nil)

var fileName: String?
var imageData: Data?
var sourceUrl: URL?
Expand All @@ -284,7 +289,7 @@ class ShareViewController: SLComposeServiceViewController {
fileName = UUID().uuidString + ".png"
imageData = image.pngData()
}

if let _fileName = fileName {
let newFileUrl = getNewFileUrl(fileName: _fileName)
do {
Expand All @@ -294,35 +299,35 @@ class ShareViewController: SLComposeServiceViewController {
} catch {
print("Error removing item")
}


var copied: Bool = false
if let _data = imageData {
copied = FileManager.default.createFile(atPath: newFileUrl.path, contents: _data)
} else if let _sourceUrl = sourceUrl {
copied = copyFile(at: _sourceUrl, to: newFileUrl)
}

if (copied) {
sharedAttachments.append(SharedAttachment.init(path: newFileUrl.absoluteString, type: .image))
} else {
dismissWithError()
return
}

} else {
dismissWithError()
return
}

}

private func handleVideos (content: NSExtensionItem, attachment: NSItemProvider, index: Int) async throws {
let data = try await attachment.loadItem(forTypeIdentifier: movieContentType, options: nil)


if let url = data as? URL {

// Always copy
let fileName = getFileName(from: url, type: .video)
let newFileUrl = getNewFileUrl(fileName: fileName)
Expand All @@ -333,14 +338,14 @@ class ShareViewController: SLComposeServiceViewController {
} else {
dismissWithError()
}

}

private func handleFiles (content: NSExtensionItem, attachment: NSItemProvider, index: Int) async throws {
let data = try await attachment.loadItem(forTypeIdentifier: fileURLType, options: nil)

if let url = data as? URL {

// Always copy
let fileName = getFileName(from :url, type: .file)
let newFileUrl = getNewFileUrl(fileName: fileName)
Expand All @@ -351,43 +356,61 @@ class ShareViewController: SLComposeServiceViewController {
} else {
dismissWithError()
}

}


private func handleData (content: NSExtensionItem, attachment: NSItemProvider, index: Int) async throws {
let data = try await attachment.loadItem(forTypeIdentifier: dataContentType, options: nil)

if let url = data as? URL {

// Always copy
let fileName = getFileName(from :url, type: .file)
let newFileUrl = getNewFileUrl(fileName: fileName)
let copied = copyFile(at: url, to: newFileUrl)
if (copied) {
sharedAttachments.append(SharedAttachment.init(path: newFileUrl.absoluteString, type: .file))
}
} else {
dismissWithError()
}

}

private func dismissWithError() {
print("[ERROR] Error loading data!")
let alert = UIAlertController(title: "Error", message: "Error loading data", preferredStyle: .alert)

let action = UIAlertAction(title: "Error", style: .cancel) { _ in
self.dismiss(animated: true, completion: nil)
}

alert.addAction(action)
present(alert, animated: true, completion: nil)
extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}

private func redirectToHostApp() {
// ids may not loaded yet so we need loadIds here too
loadIds();
let url = URL(string: "ShareMedia-\(ShareViewController.hostAppBundleIdentifier)://\(ShareViewController.hostAppBundleIdentifier)?key=\(sharedKey)")
var responder = self as UIResponder?
let selectorOpenURL = sel_registerName("openURL:")

let intent = self.extensionContext?.intent as? INSendMessageIntent

let conversationIdentifier = intent?.conversationIdentifier
let sender = intent?.sender
let serviceName = intent?.serviceName
let speakableGroupName = intent?.speakableGroupName

let sharedMedia = SharedMedia.init(attachments: sharedAttachments, conversationIdentifier: conversationIdentifier, content: sharedText.joined(separator: "\n"), speakableGroupName: speakableGroupName?.spokenPhrase, serviceName: serviceName, senderIdentifier: sender?.contactIdentifier ?? sender?.customIdentifier, imageFilePath: nil)

let json = sharedMedia.toJson()

userDefaults.set(json, forKey: sharedKey)
userDefaults.synchronize()

while (responder != nil) {
if (responder?.responds(to: selectorOpenURL))! {
let _ = responder?.perform(selectorOpenURL, with: url)
Expand All @@ -396,20 +419,20 @@ class ShareViewController: SLComposeServiceViewController {
}
extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}

enum RedirectType {
case media
case text
case file
}

func getExtension(from url: URL, type: SharedAttachmentType) -> String {
let parts = url.lastPathComponent.components(separatedBy: ".")
var ex: String? = nil
if (parts.count > 1) {
ex = parts.last
}

if (ex == nil) {
switch type {
case .image:
Expand All @@ -424,17 +447,17 @@ class ShareViewController: SLComposeServiceViewController {
}
return ex ?? "Unknown"
}

func getFileName(from url: URL, type: SharedAttachmentType) -> String {
var name = url.lastPathComponent

if (name.isEmpty) {
name = UUID().uuidString + "." + getExtension(from: url, type: type)
}

return name
}

func copyFile(at srcURL: URL, to dstURL: URL) -> Bool {
do {
if FileManager.default.fileExists(atPath: dstURL.path) {
Expand Down

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