userId

The anonymous user ID is automatically generated and persisted to disk, so it remains consistent across app launches until the user is identified.

Purpose

Returns the current user's unique identifier, either from a previous call to identify() or an anonymous ID if not identified.

Signature

// Accessed via Superwall.shared
public var userId: String { get }

Parameters

This is a read-only computed property on the Superwall.shared instance with no parameters.

Returns / State

Returns a String representing the user's ID. If identify() has been called, returns that user ID. Otherwise, returns an automatically generated anonymous user ID that is cached to disk.

Usage

Get the current user ID:

let currentUserId = Superwall.shared.userId
print("User ID: \(currentUserId)")

Check if user is identified:

if Superwall.shared.isLoggedIn {
  print("User is identified with ID: \(Superwall.shared.userId)")
} else {
  print("User is anonymous with ID: \(Superwall.shared.userId)")
}

Example usage in analytics:

func trackAnalyticsEvent() {
  let userId = Superwall.shared.userId
  Analytics.track("feature_used", properties: [
    "user_id": userId,
    "timestamp": Date()
  ])
}

Example usage in custom logging:

func logError(_ error: Error) {
  Logger.log("Error for user \(Superwall.shared.userId): \(error)")
}