Share Extensions

Receiving Files from Other Apps

You can receive files from other apps via the iOS and Android Share Sheet, and process them using the Lens SDK.

iOS

1. (Prerequisite) Create iOS Share Extension

To create a Share Extension in your iOS app:

1. Add Share Extension Target: In Xcode, go to File → New → Target → iOS → Share Extension
2. Add App Groups Capability: Enable App Groups capability in both your main app and Share Extension to share data between them
3. Configure Share Extension: Replace the default ShareViewController with your custom implementation
4. Configure App IDs and Provisioning Profiles: Make sure you create App ID for the Share Extension as well as matching provisioning profiles

2. Configure Share Extension Settings

Enable share extension mode in your VeryfiLensSettings:

let settings = VeryfiLensReceiptsSettings()
settings.shareExtensionModeIsOn = true 

Note: shareExtensionModeIsOn is a mandatory setting in iOS to handle RAM usage restrictions for Share Extensions

3. Configure VeryfiLens in Share Extension

Configure VeryfiLens with credentials and settings in your ShareViewController:

let credentials = VeryfiLensCredentials(
    clientId: "your_client_id",
    username: "your_username", 
    apiKey: "your_api_key",
    url: "your_api_url"
)

let settings = VeryfiLensReceiptsSettings()
settings.shareExtensionModeIsOn = true

VeryfiLens.shared().delegate = self
VeryfiLens.shared().configure(with: credentials, settings: settings) { success in
    if success {
        // Handle attachment after successful configuration
        self.handleAttachment()
    }
}

4. Handle Shared Files

Process the shared files using the uploadImages method:

func handleAttachment() {
    guard let extensionItem = extensionContext?.inputItems.first as? NSExtensionItem,
          let attachment = extensionItem.attachments?.first else { return }
    
    if attachment.hasItemConformingToTypeIdentifier(UTType.image.identifier) {
        attachment.loadItem(forTypeIdentifier: UTType.image.identifier, options: [:]) { [weak self] (data, error) in
            if let url = data as? URL {
                // uploadImages supports image paths
                VeryfiLens.shared().uploadImages(paths: [url.path])
            }
        }
    } else if attachment.hasItemConformingToTypeIdentifier(UTType.pdf.identifier) {
        attachment.loadItem(forTypeIdentifier: UTType.pdf.identifier, options: [:]) { [weak self] (data, error) in
            if let url = data as? URL {
                // uploadImages supports PDF paths too
                VeryfiLens.shared().uploadImages(paths: [url.path])
            }
        }
    }
}

5. Implement VeryfiLensDelegate

Handle the upload results through the delegate methods:

extension ShareViewController: VeryfiLensDelegate {
    func veryfiLensSuccess(_ json: [String: Any]) {
        // Handle successful upload
    }
    
    func veryfiLensError(_ json: [String: Any]) {
        // Handle upload error
    }
    
    func veryfiLensUpdate(_ json: [String: Any]) {
        // Handle progress updates
    }
}

danger

Important: The uploadImages method must be called after VeryfiLens.shared().configure has completed successfully.

Android

1. Enable File Sharing in Android

To allow your Android app to receive shared files, declare an intent-filter inside the <activity> tag of your AndroidManifest.xml for the activity that will handle incoming content. Lens supports both image and PDF files:

<activity android:name=".MyActivity">
    <intent-filter>
        <action android:name="android.intent.action.SEND" />
        <action android:name="android.intent.action.SEND_MULTIPLE" />
        <category android:name="android.intent.category.DEFAULT" />
        <data android:mimeType="image/*" />
        <data android:mimeType="application/pdf" />
    </intent-filter>
</activity>

2. Handle the Incoming Intent

In your designated activity, handle the intent in the onCreate() or onNewIntent() method. Use ACTION_SEND for a single file or ACTION_SEND_MULTIPLE for multiple files:

class MyReceiveActivity : AppCompatActivity() {
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
            setContentView(R.layout.activity_my_receive)

            val credentials = VeryfiLensCredentials()   // Configure your credentials
            val settings = VeryfiLensSettings()         // Configure your settings
            VeryfiLens.setDelegate(...)                 // Implement your delegate
            VeryfiLens.configure(application, credentials, settings) {}


            when (intent?.action) {
                Intent.ACTION_SEND -> {
                    if (intent?.type?.startsWith("image/") == true || intent?.type?.startsWith("application/pdf") == true) {
                        IntentCompat.getParcelableExtra(intent, Intent.EXTRA_STREAM, Uri::class.java)?.let {uri ->
                            VeryfiLens.uploadImages(arrayListOf(uri), true)
                        }
                    }
                }
                Intent.ACTION_SEND_MULTIPLE -> {
                    if (intent?.type?.startsWith("image/") == true || intent?.type?.startsWith("application/pdf") == true) {
                        (intent.parcelableArrayList<Uri>(Intent.EXTRA_STREAM))?.let { uris ->
                            VeryfiLens.uploadImages(uris, true)
                        }
                    }
                }
            }
      }
    }

To configure credentials, settings, and the delegate, refer to the Initialization and Communication sections of the documentation.