Handling System Permissions

Detect and resolve missing system permissions like Bluetooth and connectivity in your mobile app by handling the Seam SDK’s credential errors.

The mobile SDK surfaces missing or required system permissions (Bluetooth, internet connectivity, and so on) as CredentialError.userInteractionRequired(action) entries in each credential’s errors array. After activation, observe these errors and handle the specified actions. Errors update automatically as requirements change.

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Platform Setup Requirements

First, configure the required platform capabilities.

iOS Swift

1. Suppress Apple Wallet while unlocking with BLE
   To prevent the Apple Wallet dialog from appearing when your app uses BLE to unlock a door, do the following:

   • Add the requestAutomaticPassPresentationSuppression() call to your app.
     This method suppresses Apple Wallet while your mobile app is in the foreground and ensures a smoother unlockWithTap experience.
   • Request the com.apple.developer.passkit.pass-presentation-suppression entitlement from Apple.

   Apple Wallet suppression and Bluetooth scanning only apply while the app is in the foreground. Ensure unlock operations are initiated while the app is active.

2. Enable Bluetooth capability

   Add the required Bluetooth key to your app’s entitlements file:

   <dict>
     <key>com.apple.security.device.bluetooth</key>
     <true/>
   </dict>
   

Android Kotlin

1. Request Bluetooth permissions

   Define and call a helper function in your app to request the necessary Bluetooth permissions at runtime.

2. For Android 12 (API 31) and newer:

   Manifest.permission.BLUETOOTH_SCAN
   Manifest.permission.BLUETOOTH_CONNECT
   Manifest.permission.BLUETOOTH_ADVERTISE
   

3. For Android 11 (API 30) and older:

   Manifest.permission.BLUETOOTH
   Manifest.permission.BLUETOOTH_ADMIN
   Manifest.permission.ACCESS_COARSE_LOCATION
   Manifest.permission.ACCESS_FINE_LOCATION
   

See Android request permissions for more details.

Monitoring Permission Errors

iOS Swift

Use Combine to watch the published credentials array and handle permission-related errors:

import SeamSDK
import Combine

func startMonitoringPermissionErrors() {
    permissionCancellable = Seam.shared.$credentials
        .map { credentials in
            credentials.flatMap { credential in
                credential.errors.compactMap { error in
                    guard case .userInteractionRequired(let action) = error else { return nil }
                    return action
                }
            }
        }
        .receive(on: RunLoop.main)
        .sink { actions in
            actions.forEach { handlePermissionAction($0) }
        }
}

The mobile SDK automatically clears resolved permission errors once the required permission is granted, reflecting the updated credential state.

Android Kotlin

coroutineScope.launch {
    SeamSDK.getInstance().credentials.collect { credentialsList ->
        val errors = credentialsList.flatMap { it.errors }
        errors.forEach { error ->
            when (error) {
                is SeamCredentialError.UserInteractionRequired -> {
                    handleUserInteractionRequired(error.interaction)
                }
                else -> { /* handle other errors */ }
            }
        }
    }

    fun handleUserInteractionRequired(interaction: SeamRequiredUserInteraction) {
        when (interaction) {
            is SeamRequiredUserInteraction.GrantPermissions -> {
                 /* handle permissions error */
                 // interaction.permissions contains the list of required permissions
            }
            else -> { /* handle other errors */ }
        }
    }

}

The mobile SDK automatically clears resolved permission errors once the required permission is granted, reflecting the updated credential state.

Handling Permission Actions

Implement your handler for each action:

Android Kotlin

fun handleUserInteractionRequired(interaction: SeamRequiredUserInteraction) {
    when (interaction) {
        is SeamRequiredUserInteraction.CompleteOtpAuthorization -> { /* handle OTP authorization */ }
        is SeamRequiredUserInteraction.EnableBluetooth -> { /* handle Bluetooth error */ }
        is SeamRequiredUserInteraction.EnableInternet -> { /* handle Internet connection error*/ }
        is SeamRequiredUserInteraction.GrantPermissions -> { /* handle permissions error*/ }
    }
}

iOS Swift

func handlePermissionAction(_ action: CredentialUserAction) {
    switch action {
    case .enableInternet:
        // Prompt the user to enable network connectivity.
    case .enableBluetooth:
        // Prompt the user to turn on Bluetooth.
    case .grantBluetoothPermission:
        // Prompt the user to grant Bluetooth permission in Settings.
    }
}

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See also

For a complete SwiftUI-based implementation of credential error handling for iOS, see SeamUnlockCardView in the SeamComponents library, which demonstrates observing credential errors and updating the UI accordingly.