iOS: Share Extension (share to Noo) via an App Group inbox
ShareExtension target copies shared files into group.dev.ayushya.noo and leaves a manifest; the app consumes it on launch/activation through the existing share_intent channel into the destination picker. Extension is embedded before Flutter's script phases; versions follow FLUTTER_BUILD_*. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
Ayushya Amitabh
co-authored by
Claude Sonnet 5.5
Claude Sonnet 5.5
parent
8b86aa8f34
commit
525504bc47
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleDevelopmentRegion</key>
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<string>$(DEVELOPMENT_LANGUAGE)</string>
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<key>CFBundleDisplayName</key>
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<string>Noo</string>
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<key>CFBundleExecutable</key>
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<string>$(EXECUTABLE_NAME)</string>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>$(PRODUCT_NAME)</string>
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<key>CFBundlePackageType</key>
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<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
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<key>CFBundleShortVersionString</key>
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<string>$(MARKETING_VERSION)</string>
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<key>CFBundleVersion</key>
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<string>$(CURRENT_PROJECT_VERSION)</string>
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<key>NSExtension</key>
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<dict>
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<key>NSExtensionAttributes</key>
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<dict>
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<key>NSExtensionActivationRule</key>
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<dict>
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<key>NSExtensionActivationSupportsFileWithMaxCount</key>
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<integer>50</integer>
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<key>NSExtensionActivationSupportsImageWithMaxCount</key>
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<integer>50</integer>
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<key>NSExtensionActivationSupportsMovieWithMaxCount</key>
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<integer>50</integer>
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</dict>
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</dict>
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<key>NSExtensionPointIdentifier</key>
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<string>com.apple.share-services</string>
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<key>NSExtensionPrincipalClass</key>
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<string>$(PRODUCT_MODULE_NAME).ShareViewController</string>
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</dict>
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</dict>
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</plist>
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@@ -0,0 +1,10 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>com.apple.security.application-groups</key>
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<array>
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<string>group.dev.ayushya.noo</string>
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</array>
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</dict>
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</plist>
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import UIKit
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import UniformTypeIdentifiers
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import UserNotifications
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/// "Share to Noo": copies whatever was shared into the App Group container
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/// (`SharedInbox`) and finishes. The extension can't pick a destination or
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/// upload - it has no session and a tight memory/time budget - so the app
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/// does that when it next opens, through its existing destination picker. A
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/// notification tells the user to open it, because an extension can't launch
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/// its host app.
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final class ShareViewController: UIViewController {
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private let label = UILabel()
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private let spinner = UIActivityIndicatorView(style: .large)
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override func viewDidLoad() {
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super.viewDidLoad()
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view.backgroundColor = .systemBackground
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label.text = "Saving to Noo…"
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label.font = .preferredFont(forTextStyle: .headline)
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label.textAlignment = .center
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label.numberOfLines = 0
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spinner.startAnimating()
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let stack = UIStackView(arrangedSubviews: [spinner, label])
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stack.axis = .vertical
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stack.spacing = 16
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stack.alignment = .center
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stack.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(stack)
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NSLayoutConstraint.activate([
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stack.centerXAnchor.constraint(equalTo: view.centerXAnchor),
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stack.centerYAnchor.constraint(equalTo: view.centerYAnchor),
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stack.leadingAnchor.constraint(greaterThanOrEqualTo: view.leadingAnchor, constant: 24),
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stack.trailingAnchor.constraint(lessThanOrEqualTo: view.trailingAnchor, constant: -24),
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])
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Task { await importSharedItems() }
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}
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private func importSharedItems() async {
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guard let root = AppGroup.containerURL else {
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return finish(message: "Noo isn't set up to receive files yet.", saved: 0)
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}
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let providers = (extensionContext?.inputItems as? [NSExtensionItem])?
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.flatMap { $0.attachments ?? [] } ?? []
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var saved: [SharedItem] = []
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do {
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let batch = try SharedInbox.makeBatchDirectory(in: root)
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for provider in providers where provider.hasItemConformingToTypeIdentifier(UTType.item.identifier) {
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if let item = try? await copy(provider, into: batch) { saved.append(item) }
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}
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try SharedInbox.append(saved, in: root)
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} catch {
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return finish(message: "Couldn't save to Noo: \(error.localizedDescription)", saved: 0)
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}
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if saved.isEmpty {
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finish(message: "Noo can only receive files and photos.", saved: 0)
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} else {
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notify(count: saved.count)
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finish(message: saved.count == 1 ? "Saved 1 file to Noo" : "Saved \(saved.count) files to Noo", saved: saved.count)
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}
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}
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/// `loadFileRepresentation`'s URL only lives for the duration of its
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/// callback, so the copy happens inside it.
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private func copy(_ provider: NSItemProvider, into directory: URL) async throws -> SharedItem {
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try await withCheckedThrowingContinuation { continuation in
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provider.loadFileRepresentation(forTypeIdentifier: UTType.item.identifier) { url, error in
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guard let url else {
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return continuation.resume(throwing: error ?? CocoaError(.fileReadUnknown))
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}
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do {
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let destination = Self.uniqueURL(in: directory, name: url.lastPathComponent)
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try FileManager.default.copyItem(at: url, to: destination)
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let size = (try? FileManager.default.attributesOfItem(atPath: destination.path))?[.size] as? Int64 ?? 0
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let mime = UTType(filenameExtension: destination.pathExtension)?.preferredMIMEType
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continuation.resume(
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returning: SharedItem(
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path: destination.path, name: destination.lastPathComponent, mimeType: mime, size: size))
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} catch {
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continuation.resume(throwing: error)
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}
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}
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}
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}
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private static func uniqueURL(in directory: URL, name: String) -> URL {
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var candidate = directory.appendingPathComponent(name)
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var index = 1
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while FileManager.default.fileExists(atPath: candidate.path) {
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let ext = (name as NSString).pathExtension
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let stem = (name as NSString).deletingPathExtension
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candidate = directory.appendingPathComponent(ext.isEmpty ? "\(stem) (\(index))" : "\(stem) (\(index)).\(ext)")
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index += 1
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}
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return candidate
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}
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private func notify(count: Int) {
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let content = UNMutableNotificationContent()
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content.title = "Noo"
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content.body =
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count == 1
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? "Open Noo to choose where to upload 1 file."
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: "Open Noo to choose where to upload \(count) files."
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content.sound = .default
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UNUserNotificationCenter.current().add(
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UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil))
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}
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private func finish(message: String, saved: Int) {
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DispatchQueue.main.async {
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self.spinner.stopAnimating()
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self.label.text = message
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DispatchQueue.main.asyncAfter(deadline: .now() + (saved > 0 ? 1.2 : 2.5)) {
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self.extensionContext?.completeRequest(returningItems: nil)
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}
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}
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}
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}
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