Launch a CarPlay app scene from another CarPlay app using URL Scheme.

Question

Created Dec ’20

Replies 2

Boosts 0

Views 3.1k

Participants 4

I am developing two CarPlay apps where one is navigation app and other is Food Ordering app.
My requirement is to launch navigation app from Food Ordering app after successfully placing an order to show navigation to restaurant.

I tried it by handling URL schemes in sample CarPlay navigation app provided by Apple.
Here is code which I implemented in Food order app:

let coastalHooks = "CoastalRoads://"
      if let coastalUrl = URL(string: coastalHooks) {
        if UIApplication.shared.canOpenURL(coastalUrl) {
          UIApplication.shared.openURL(coastalUrl)
        }
      }

As In CoastalRoads app there are two scene delegates are handled one is 'LoggerWindowSceneDelegate', which is for main phone app and other is 'TemplateApplicationSceneDelegate', which is for CarPlay but didn't found anything to launch specific scene of CarPlay.
Here is link where from I downloaded sample CarPlay app:
https://developer.apple.com/documentation/carplay/integrating_carplay_with_your_navigation_app

Answered by y-sawai in 654007022

I think that you can solve it by referring to the following thread.
You can launch another carplay app by using CPTemplateApplicationScene.
https://developer.apple.com/forums/thread/128945

My situation, I implement the following in CarPlaySceneDelegate.
I can launch another CarPlay app using URL scheme like this.

Example code (Launch iOS map or google map in CarPlay):

Code Block languageimport CarPlay
class CarPlaySceneDelegate: UIResponder, CPTemplateApplicationSceneDelegate {
    ...
    var cpTemplateApplicationScene : CPTemplateApplicationScene?
    
    ...
    
    // CarPlay connected
    func templateApplicationScene(_ templateApplicationScene: CPTemplateApplicationScene, didConnect interfaceController: CPInterfaceController) {
        ...
        self.cpTemplateApplicationScene = templateApplicationScene
        ...
        // Call the following by some kind of trigger.
        self.launchmap(<desination latitude>, <desination longtitude>, carplay: true)
        ...
    }
    // Lanch map app function
    func launchmap(latitude: String, longtitude: String, carplay : Bool = true) {
        let urlString: String!
        if UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!) {
            urlString = "comgooglemaps://?&daddr=\(latitude),\(longtitude)&directionsmode=driving"
        } else {
            urlString = "http://maps.apple.com/?daddr=\(latitude),\(longtitude)&dirflg=d"
        }
        if let url = URL(string: urlString) {
            if (carplay) {
                self.cpTemplateApplicationScene?.open(url, options: nil, completionHandler: { (Void) in print("completed!")})
            } else {
                UIApplication.shared.open(url)
            }
        }
    }
    ...
}

Boost

Answer 1

y-sawai OP

Dec ’20

Accepted Answer

I think that you can solve it by referring to the following thread.
You can launch another carplay app by using CPTemplateApplicationScene.
https://developer.apple.com/forums/thread/128945

My situation, I implement the following in CarPlaySceneDelegate.
I can launch another CarPlay app using URL scheme like this.

Example code (Launch iOS map or google map in CarPlay):

Code Block languageimport CarPlay
class CarPlaySceneDelegate: UIResponder, CPTemplateApplicationSceneDelegate {
    ...
    var cpTemplateApplicationScene : CPTemplateApplicationScene?
    
    ...
    
    // CarPlay connected
    func templateApplicationScene(_ templateApplicationScene: CPTemplateApplicationScene, didConnect interfaceController: CPInterfaceController) {
        ...
        self.cpTemplateApplicationScene = templateApplicationScene
        ...
        // Call the following by some kind of trigger.
        self.launchmap(<desination latitude>, <desination longtitude>, carplay: true)
        ...
    }
    // Lanch map app function
    func launchmap(latitude: String, longtitude: String, carplay : Bool = true) {
        let urlString: String!
        if UIApplication.shared.canOpenURL(URL(string:"comgooglemaps://")!) {
            urlString = "comgooglemaps://?&daddr=\(latitude),\(longtitude)&directionsmode=driving"
        } else {
            urlString = "http://maps.apple.com/?daddr=\(latitude),\(longtitude)&dirflg=d"
        }
        if let url = URL(string: urlString) {
            if (carplay) {
                self.cpTemplateApplicationScene?.open(url, options: nil, completionHandler: { (Void) in print("completed!")})
            } else {
                UIApplication.shared.open(url)
            }
        }
    }
    ...
}

0

Answer 2

thinapp OP

Apr ’21

Hey there. I'm interested in doing some stuff with CarPlay and have a ton of Clients who may need this. Can you contact me so we can chat about working together?

thinappdev@gmail.com

0