Handling System Permissions
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.
Platform Setup Requirements
First, configure the required platform capabilities.
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 smootherunlockWithTapexperience.Request the
com.apple.developer.passkit.pass-presentation-suppressionentitlement 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.
Enable Bluetooth capability
Add the required Bluetooth key to your app’s entitlements file:
<dict> <key>com.apple.security.device.bluetooth</key> <true/> </dict>
Request Bluetooth permissions
Define and call a helper function in your app to request the necessary Bluetooth permissions at runtime.
For Android 12 (API 31) and newer:
Manifest.permission.BLUETOOTH_SCAN Manifest.permission.BLUETOOTH_CONNECT Manifest.permission.BLUETOOTH_ADVERTISEFor 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
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.
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:
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*/ }
}
}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.
}
}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.
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