[iOS] My app is listed in the share applications list but it doesn't work

[AlexandreRousseau36]

Hey,

I have an issue with this package, and I've been going in circles for hours.

When I try to share a file, my app is listed in the list of apps that can receive files.

However, when I tap on it, there's a brief animation that makes me believe it's working, but nothing actually happens.

It seems like the file isn't being received by the app. Does anyone have any idea what could be causing this issue?

I've tried following the main page of the package and copying the example from Git.

Does any of you can help me please ?

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>AppGroupId</key>
    <string>$(CUSTOM_GROUP_ID)</string>
    <key>CFBundleDevelopmentRegion</key>
    <string>$(DEVELOPMENT_LANGUAGE)</string>
    <key>CFBundleDisplayName</key>
    <string>Sharing Extension</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>$(PRODUCT_NAME)</string>
    <key>CFBundlePackageType</key>
    <string>XPC!</string>
    <key>CFBundleShortVersionString</key>
    <string>$(MARKETING_VERSION)</string>
    <key>CFBundleVersion</key>
    <string>$(CURRENT_PROJECT_VERSION)</string>
    <key>NSExtension</key>
    <dict>
        <key>NSExtensionAttributes</key>
        <dict>
            <key>NSExtensionActivationRule</key>
            <dict>
                <key>NSExtensionActivationSupportsFileWithMaxCount</key>
                <integer>1</integer>
                <key>NSExtensionActivationSupportsImageWithMaxCount</key>
                <integer>100</integer>
                <key>NSExtensionActivationSupportsMovieWithMaxCount</key>
                <integer>100</integer>
                <key>NSExtensionActivationSupportsText</key>
                <true/>
                <key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
                <integer>1</integer>
            </dict>
            <key>PHSupportedMediaTypes</key>
            <array>
                <string>Video</string>
                <string>Image</string>
            </array>
        </dict>
        <key>NSExtensionMainStoryboard</key>
        <string>MainInterface</string>
        <key>NSExtensionPointIdentifier</key>
        <string>com.apple.share-services</string>
    </dict>
</dict>
</plist>

.entitlements

<?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>com.apple.security.application-groups</key>
    <array>
        <string>group.com.saphyr.saphyr</string>
    </array>
</dict>
</plist>

ShareViewController.swift

//
//  ShareViewController.swift
//  Sharing Extension
//
//  Created by Kasem Mohamed on 2019-05-30.
//  Copyright © 2019 The Chromium Authors. All rights reserved.
//

import UIKit
import Social
import MobileCoreServices
import Photos

class ShareViewController: SLComposeServiceViewController {
    var hostAppBundleIdentifier = "com.saphyr.saphyr"
    var appGroupId = "group.com.saphyr.saphyr"
    let sharedKey = "ShareKey"
    var sharedMedia: [SharedMediaFile] = []
    var sharedText: [String] = []
    let imageContentType = kUTTypeImage as String
    let videoContentType = kUTTypeMovie as String
    let textContentType = kUTTypeText as String
    let urlContentType = kUTTypeURL as String
    let fileURLType = kUTTypeFileURL as String;

    override func isContentValid() -> Bool {
        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(imageContentType) {
                        handleImages(content: content, attachment: attachment, index: index)
                    } else if attachment.hasItemConformingToTypeIdentifier(textContentType) {
                        handleText(content: content, attachment: attachment, index: index)
                    } else if attachment.hasItemConformingToTypeIdentifier(fileURLType) {
                        handleFiles(content: content, attachment: attachment, index: index)
                    } else if attachment.hasItemConformingToTypeIdentifier(urlContentType) {
                        handleUrl(content: content, attachment: attachment, index: index)
                    } else if attachment.hasItemConformingToTypeIdentifier(videoContentType) {
                        handleVideos(content: content, attachment: attachment, index: index)
                    }
                }
            }
        }
    }

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

    override func configurationItems() -> [Any]! {
        // To add configuration options via table cells at the bottom of the sheet, return an array of SLComposeSheetConfigurationItem here.
        return []
    }

    private func handleText (content: NSExtensionItem, attachment: NSItemProvider, index: Int) {
        attachment.loadItem(forTypeIdentifier: textContentType, options: nil) { [weak self] data, error in

            if error == nil, let item = data as? String, let this = self {

                this.sharedText.append(item)

                // If this is the last item, save imagesData in userDefaults and redirect to host app
                if index == (content.attachments?.count)! - 1 {
                    let userDefaults = UserDefaults(suiteName: this.appGroupId)
                    userDefaults?.set(this.sharedText, forKey: this.sharedKey)
                    userDefaults?.synchronize()
                    this.redirectToHostApp(type: .text)
                }

            } else {
                self?.dismissWithError()
            }
        }
    }

    private func handleUrl (content: NSExtensionItem, attachment: NSItemProvider, index: Int) {
        attachment.loadItem(forTypeIdentifier: urlContentType, options: nil) { [weak self] data, error in

            if error == nil, let item = data as? URL, let this = self {

                this.sharedText.append(item.absoluteString)

                // If this is the last item, save imagesData in userDefaults and redirect to host app
                if index == (content.attachments?.count)! - 1 {
                    let userDefaults = UserDefaults(suiteName: this.appGroupId)
                    userDefaults?.set(this.sharedText, forKey: this.sharedKey)
                    userDefaults?.synchronize()
                    this.redirectToHostApp(type: .text)
                }

            } else {
                self?.dismissWithError()
            }
        }
    }

    private func handleImages (content: NSExtensionItem, attachment: NSItemProvider, index: Int) {
        attachment.loadItem(forTypeIdentifier: imageContentType, 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: .image)
                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: .image))
                }

                // If this is the last item, save imagesData in userDefaults and redirect to host app
                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: .media)
                }

            } else {
                 self?.dismissWithError()
            }
        }
    }

    private func handleVideos (content: NSExtensionItem, attachment: NSItemProvider, index: Int) {
        attachment.loadItem(forTypeIdentifier: videoContentType, 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: .video)
                let newPath = FileManager.default
                    .containerURL(forSecurityApplicationGroupIdentifier: this.appGroupId)!
                    .appendingPathComponent(fileName)
                let copied = this.copyFile(at: url, to: newPath)
                if(copied) {
                    guard let sharedFile = this.getSharedMediaFile(forVideo: newPath) else {
                        return
                    }
                    this.sharedMedia.append(sharedFile)
                }

                // If this is the last item, save imagesData in userDefaults and redirect to host app
                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: .media)
                }

            } else {
                 self?.dismissWithError()
            }
        }
    }

    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()
            }
        }
    }

    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"
                case .file:
                    ex = "TXT"
            }
        }
        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
    }
}

[AlexandreRousseau36]

Ok it works. I reverted back to an old save. Did everything again and it works.

[icodelifee]

@AlexandreRousseau36 i have this issue with vcard i believe the issue is with not having a handler in ShareViewController

[SoCaliOS]

I have the same issue, no error when I flutter build ios --release and run the app. But when I am trying to share an image or a PDF file, the screen flash quickly and nothing happened. Any suggestions? What is your old save?

[juanan-onelife]

@SoCaliOS hi! i have the same issue when the app is killed, i share the content and the splash screen flash and closed. Can you fix it?

[sunjiaming]

i have the same issue,i share the content and the splash screen flash and closed.

[princeradebe]

Found this new package that solves my issues with iOS by @OutdatedGuy

https://github.com/OutdatedGuy/receive_sharing_intent_plus