How do I add feature flags to toggle UI in UIKit with Swift?

Feature flags are an essential tool for managing UI behavior in UIKit applications built with Swift. They allow developers to enable or disable specific UI components or features dynamically without requiring a new application release. This approach is particularly useful for A/B testing, gradual feature rollouts, or toggling features based on user segments.

Implementing Feature Flags in UIKit with Swift

Below is an example of how you can implement feature flags in a UIKit application:

// Define your feature flags constants struct FeatureFlags { static let newFeatureEnabled = true // Change this to false to disable the feature } class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Check if the new feature should be enabled if FeatureFlags.newFeatureEnabled { setupNewFeatureUI() } else { setupOldFeatureUI() } } func setupNewFeatureUI() { // Code to setup the new feature's UI let label = UILabel() label.text = "New Feature Enabled" label.textAlignment = .center label.frame = CGRect(x: 0, y: 0, width: 300, height: 50) view.addSubview(label) } func setupOldFeatureUI() { // Code to setup the old feature's UI let label = UILabel() label.text = "Old Feature Active" label.textAlignment = .center label.frame = CGRect(x: 0, y: 0, width: 300, height: 50) view.addSubview(label) } }

feature flags UIKit Swift dynamic UI A/B testing feature rollout user segments

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