How to test iPhone app and CarPlay together?

Question

Created Jan ’25

Replies 1

Boosts 0

Participants 2

I have developed a mobile app using SwiftUI. Now I am in the process of building a CarPlay application. I know how to test the CarPlay app using a simulator but here is my confusion,

Testing the iPhone app and CarPlay together (few scenarios like user login / logout, location enabled /disabled in the mobile app)

Kindly help me validate the above scenarios as I am getting black screen on iPhone whenever the CarPlay is launched. Below is the code snippet,

 func application(_ application: UIApplication,
                     configurationForConnecting connectingSceneSession: UISceneSession,
                     options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        if connectingSceneSession.role == .carTemplateApplication {
            let sceneConfiguration = UISceneConfiguration(name: "CarPlay Scene", sessionRole: connectingSceneSession.role)
            sceneConfiguration.delegateClass = CarPlaySceneDelegate.self
            return sceneConfiguration
        }
        
        // Configuration for other types of scenes
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }
 
struct MyApp: App {
    @UIApplicationDelegateAdaptor(AppDelegate.self) var delegate
    
    var body: some Scene {
        WindowGroup {
            ContentView()
                .preferredColorScheme(.light)
        }
    }
    
}

Info.plist

 <key>UIApplicationSceneManifest</key>
        <dict>
            <key>UIApplicationSupportsMultipleScenes</key>
            <true/>
            <key>UISceneConfigurations</key>
            <dict>
                <key>CPTemplateApplicationSceneSessionRoleApplication</key>
                <array>
                    <dict>
                        <key>UISceneConfigurationName</key>
                        <string>CarPlay Scene</string>
                        <key>UISceneDelegateClassName</key>
                        <string>$(PRODUCT_MODULE_NAME).CarPlaySceneDelegate</string>
                    </dict>
                </array>
            </dict>
        </dict>

Boost

Answer 1

Engineer OP

Apple

Jan ’25

The black screen bug may be a symptom of the Xcode CarPlay simulator. You can try using the standalone simulator to test the above cases at it should behave correctly.

Here is the WWDC video where we introduced it.

Rico

WWDR | DTS | Software Engineer

0

	func application(_ application: UIApplication,
	configurationForConnecting connectingSceneSession: UISceneSession,
	options: UIScene.ConnectionOptions) -> UISceneConfiguration {
	if connectingSceneSession.role == .carTemplateApplication {
	let sceneConfiguration = UISceneConfiguration(name: "CarPlay Scene", sessionRole: connectingSceneSession.role)
	sceneConfiguration.delegateClass = CarPlaySceneDelegate.self
	return sceneConfiguration
	}

	// Configuration for other types of scenes
	return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
	}

	struct MyApp: App {
	@UIApplicationDelegateAdaptor(AppDelegate.self) var delegate

	var body: some Scene {
	WindowGroup {
	ContentView()
	.preferredColorScheme(.light)
	}
	}

	}

	<key>UIApplicationSceneManifest</key>
	<dict>
	<key>UIApplicationSupportsMultipleScenes</key>
	<true/>
	<key>UISceneConfigurations</key>
	<dict>
	<key>CPTemplateApplicationSceneSessionRoleApplication</key>
	<array>
	<dict>
	<key>UISceneConfigurationName</key>
	<string>CarPlay Scene</string>
	<key>UISceneDelegateClassName</key>
	<string>$(PRODUCT_MODULE_NAME).CarPlaySceneDelegate</string>
	</dict>
	</array>
	</dict>
	</dict>