I have a Flutter application and i implemented the package receive_sharing_intent in order to receive shared pdf files in the app. It works perfect in Android. The problem comes in IOS. When i try to share a pdf from the files of the system, my app does appear in the list of apps. But, when i select it, it doesn’t even open. Here’s the configuration i made on the IOS project, based on the package repository here https://github.com/Thogsit/receive_sharing_intent
Flutter: pubspec.yaml
Runner/info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CADisableMinimumFrameDurationOnPhone</key>
<true/>
<key>CFBundleDevelopmentRegion</key>
<string>$(DEVELOPMENT_LANGUAGE)</string>
<key>CFBundleDisplayName</key>
<string>Business Cards Manager</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>business_cards_manager</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>$(FLUTTER_BUILD_NAME)</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>$(FLUTTER_BUILD_NUMBER)</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>NSLocationAlwaysUsageDescription</key>
<string>Needed to access location always when the app is open.</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>Needed to access location when the app is open and run in background.</string>
<key>UIApplicationSupportsIndirectInputEvents</key>
<true/>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIMainStoryboardFile</key>
<string>Main</string>
<key>UIStatusBarStyle</key>
<string></string>
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UISupportedInterfaceOrientations~ipad</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationPortraitUpsideDown</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UIViewControllerBasedStatusBarAppearance</key>
<false/>
<key>AppGroupId</key>
<string>$(CUSTOM_GROUP_ID)</string>
<key>CFBundleURLTypes</key>
<array>
<dict>
<key>CFBundleTypeRole</key>
<string>Editor</string>
<key>CFBundleURLSchemes</key>
<array>
<string>ShareMedia-$(PRODUCT_BUNDLE_IDENTIFIER)</string>
</array>
</dict>
</array>
</dict>
</plist>
Share Extension / info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>NSExtension</key>
<dict>
<key>NSExtensionAttributes</key>
<dict>
<key>NSExtensionActivationRule</key>
<string>TRUEPREDICATE</string>
</dict>
<key>NSExtensionMainStoryboard</key>
<string>MainInterface</string>
<key>NSExtensionPointIdentifier</key>
<string>com.apple.share-services</string>
</dict>
<key>AppGroupId</key>
<string>$(CUSTOM_GROUP_ID)</string>
<key>CFBundleVersion</key>
<string>$(FLUTTER_BUILD_NUMBER)</string>
<key>NSExtension</key>
<dict>
<key>NSExtensionAttributes</key>
<dict>
<key>NSExtensionActivationRule</key>
<dict>
<!--TODO: Add this flag, if you want to support sharing other files into your app-->
<!--Change the integer to however many files you want to be able to share at a time-->
<key>NSExtensionActivationSupportsFileWithMaxCount</key>
<integer>1</integer>
</dict>
</dict>
<key>NSExtensionMainStoryboard</key>
<string>MainInterface</string>
<key>NSExtensionPointIdentifier</key>
<string>com.apple.share-services</string>
</dict>
</dict>
</plist>
Share Extension/ ShareViewController.swift
import UIKit
import Social
import MobileCoreServices
import Photos
class ShareViewController: SLComposeServiceViewController {
var hostAppBundleIdentifier = ""
var appGroupId = ""
let sharedKey = "ShareKey"
var sharedMedia: [SharedMediaFile] = []
var sharedText: [String] = []
let fileURLType = kUTTypeFileURL as String;
override func isContentValid() -> Bool {
// Do validation of contentText and/or NSExtensionContext attachments here
return true
}
private func loadIds() {
// loading Share extension App Id
let shareExtensionAppBundleIdentifier = Bundle.main.bundleIdentifier!;
// convert ShareExtension id to host app id
// By default it is remove last part of id after last point
// For example: com.test.ShareExtension -> com.test
let lastIndexOfPoint = shareExtensionAppBundleIdentifier.lastIndex(of: ".");
hostAppBundleIdentifier = String(shareExtensionAppBundleIdentifier[..<lastIndexOfPoint!]);
// loading custom AppGroupId from Build Settings or use group.<hostAppBundleIdentifier>
appGroupId = (Bundle.main.object(forInfoDictionaryKey: "AppGroupId") as? String) ?? "group.\(hostAppBundleIdentifier)";
}
override func viewDidLoad() {
super.viewDidLoad();
//load group and app id from build info
loadIds();
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// This is called after the user selects Post. Do the upload of contentText and/or NSExtensionContext attachments.
if let content = extensionContext!.inputItems[0] as? NSExtensionItem {
if let contents = content.attachments {
for (index, attachment) in (contents).enumerated() {
if attachment.hasItemConformingToTypeIdentifier(fileURLType) {
handleFiles(content: content, attachment: attachment, index: index)
}
}
}
}
}
private func handleFiles (content: NSExtensionItem, attachment: NSItemProvider, index: Int) {
attachment.loadItem(forTypeIdentifier: fileURLType, options: nil) { [weak self] data, error in
if error == nil, let url = data as? URL, let this = self {
// Always copy
let fileName = this.getFileName(from :url, type: .file)
let newPath = FileManager.default
.containerURL(forSecurityApplicationGroupIdentifier: this.appGroupId)!
.appendingPathComponent(fileName)
let copied = this.copyFile(at: url, to: newPath)
if (copied) {
this.sharedMedia.append(SharedMediaFile(path: newPath.absoluteString, thumbnail: nil, duration: nil, type: .file))
}
if index == (content.attachments?.count)! - 1 {
let userDefaults = UserDefaults(suiteName: this.appGroupId)
userDefaults?.set(this.toData(data: this.sharedMedia), forKey: this.sharedKey)
userDefaults?.synchronize()
this.redirectToHostApp(type: .file)
}
} else {
self?.dismissWithError()
}
}
}
override func configurationItems() -> [Any]! {
// To add configuration options via table cells at the bottom of the sheet, return an array of SLComposeSheetConfigurationItem here.
return []
}
override func didSelectPost() {
// This is called after the user selects Post. Do the upload of contentText and/or NSExtensionContext attachments.
// Inform the host that we're done, so it un-blocks its UI. Note: Alternatively you could call super's -didSelectPost, which will similarly complete the extension context.
//self.extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
print("didSelectPost");
}
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(type: RedirectType) {
//ids may not loaded yet so we need loadIds here too
loadIds();
let url = URL(string: "ShareMedia-\(hostAppBundleIdentifier)://dataUrl=\(sharedKey)#\(type)")
var responder = self as UIResponder?
let selectorOpenURL = sel_registerName("openURL:")
while (responder != nil) {
if (responder?.responds(to: selectorOpenURL))! {
let _ = responder?.perform(selectorOpenURL, with: url)
}
responder = responder!.next
}
extensionContext!.completeRequest(returningItems: [], completionHandler: nil)
}
enum RedirectType {
case media
case text
case file
}
func getExtension(from url: URL, type: SharedMediaType) -> 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:
ex = "PNG"
case .video:
ex = "MP4"
//TODO: Mirar si lo cambio por pdf
case .file:
ex = "PDF"
}
}
return ex ?? "Unknown"
}
func getFileName(from url: URL, type: SharedMediaType) -> 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) {
try FileManager.default.removeItem(at: dstURL)
}
try FileManager.default.copyItem(at: srcURL, to: dstURL)
} catch (let error) {
print("Cannot copy item at \(srcURL) to \(dstURL): \(error)")
return false
}
return true
}
private func getSharedMediaFile(forVideo: URL) -> SharedMediaFile? {
let asset = AVAsset(url: forVideo)
let duration = (CMTimeGetSeconds(asset.duration) * 1000).rounded()
let thumbnailPath = getThumbnailPath(for: forVideo)
if FileManager.default.fileExists(atPath: thumbnailPath.path) {
return SharedMediaFile(path: forVideo.absoluteString, thumbnail: thumbnailPath.absoluteString, duration: duration, type: .video)
}
var saved = false
let assetImgGenerate = AVAssetImageGenerator(asset: asset)
assetImgGenerate.appliesPreferredTrackTransform = true
// let scale = UIScreen.main.scale
assetImgGenerate.maximumSize = CGSize(width: 360, height: 360)
do {
let img = try assetImgGenerate.copyCGImage(at: CMTimeMakeWithSeconds(600, preferredTimescale: Int32(1.0)), actualTime: nil)
try UIImage.pngData(UIImage(cgImage: img))()?.write(to: thumbnailPath)
saved = true
} catch {
saved = false
}
return saved ? SharedMediaFile(path: forVideo.absoluteString, thumbnail: thumbnailPath.absoluteString, duration: duration, type: .video) : nil
}
private func getThumbnailPath(for url: URL) -> URL {
let fileName = Data(url.lastPathComponent.utf8).base64EncodedString().replacingOccurrences(of: "==", with: "")
let path = FileManager.default
.containerURL(forSecurityApplicationGroupIdentifier: appGroupId)!
.appendingPathComponent("\(fileName).jpg")
return path
}
class SharedMediaFile: Codable {
var path: String; // can be image, video or url path. It can also be text content
var thumbnail: String?; // video thumbnail
var duration: Double?; // video duration in milliseconds
var type: SharedMediaType;
init(path: String, thumbnail: String?, duration: Double?, type: SharedMediaType) {
self.path = path
self.thumbnail = thumbnail
self.duration = duration
self.type = type
}
// Debug method to print out SharedMediaFile details in the console
func toString() {
print("[SharedMediaFile] \n\tpath: \(self.path)\n\tthumbnail: \(self.thumbnail)\n\tduration: \(self.duration)\n\ttype: \(self.type)")
}
}
enum SharedMediaType: Int, Codable {
case image
case video
case file
}
func toData(data: [SharedMediaFile]) -> Data {
let encodedData = try? JSONEncoder().encode(data)
return encodedData!
}
}
extension Array {
subscript (safe index: UInt) -> Element? {
return Int(index) < count ? self[Int(index)] : nil
}
}
pods/podfile
ENV['COCOAPODS_DISABLE_STATS'] = 'true'
project 'Runner', {
'Debug' => :debug,
'Profile' => :release,
'Release' => :release,
}
def flutter_root
generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), _FILE_)
unless File.exist?(generated_xcode_build_settings_path)
raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
end
File.foreach(generated_xcode_build_settings_path) do |line|
matches = line.match(/FLUTTER_ROOT\=(.*)/)
return matches[1].strip if matches
end
raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end
require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
flutter_ios_podfile_setup
target 'Runner' do
use_frameworks!
use_modular_headers!
flutter_install_all_ios_pods File.dirname(File.realpath(_FILE_))
# Sharing Extension is name of Extension which you created. It is 'Share Extension' and 'Sharing Extension' in example
target 'Share Extension' do
inherit! :search_paths
end
end
post_install do |installer|
installer.pods_project.targets.each do |target|
flutter_additional_ios_build_settings(target)
end
end
This is the configuration of the App Groups on the capabilities tab and of the build settings (Both, Runner and Share Exception, are at the same group: group.xxxx)
And i was testing my app in the emulator iPhone 14 Pro – iOS 16.2.
I really appreciate if anyone can help me with this problem.
