How to Build Your First App for Android Automotive OS – Grape Up

Android Automotive OS is obtaining far more recognition as automotive companies are seeking to provide their customers with a more tailor-made expertise. Listed here we share our guidebook to constructing the very first application for AAOS.

Before you get started, read through our initially posting about AAOS and get to know our evaluate to be knowledgeable of what to count on. Let us test creating a simple Hello there Environment app for android automotive. To get an IDE, go to Android Studio Preview | Android Developers and get a canary construct:

In the subsequent stage, get ready SDK, check out and obtain the Automotive process image in SDK manager. You can get any from api32, Android 9, or Android 10, but I do not advise the most recent a single as it is extremely laggy and crashes a whole lot ideal now. There are also Volvo and Polestar photos.

For these you want to include one-way links to SDK Update Internet sites:

https://developer.volvocars.com/sdk/volvo-sys-img.xml

https://developer.polestar.com/sdk/polestar2-sys-img.xml

Start a new undertaking, go to File> New Job and pick out automotive with no activity

A great and clean up project should really be designed, without the need of any lessons: Go to make.gradle and incorporate the motor vehicle app library into dependencies, refresh the project to make it get

our new dependency:

implementation "androidx.car or truck.application:app-automotive:1.2.-rc01"

Let’s produce some code, first our screen course. Name it as you want and make it prolong Monitor class from android.vehicle.application package and make it carry out essential strategies:

general public class GrapeAppScreen extends Display 

   community GrapeAppScreen(@NonNull CarContext carContext) 
       super(carContext)
   

   @NonNull
   @Override
   public Template onGetTemplate() 
       Row row = new Row.Builder()
.setTitle("Thats our Grape App!").build()

       return new PaneTemplate.Builder(
               new Pane.Builder()
                       .addRow(row)
                       .make()
       ).setHeaderAction(Motion.Application_ICON).build()
   

That should create a uncomplicated display screen with our icon and title, now produce one more course extending CarAppService from the similar package and as very well make it employ the needed techniques. From createHostValidator() system return a static one that lets all hostnames for the objective of this tutorial and return model new session with our screen in onCreateSession(), move CarContext applying Session course getCarContext() process:

general public class GrapeAppService extends CarAppService 

   community GrapeAppService() 

   @NonNull
   @Override
   community HostValidator createHostValidator() 
       return HostValidator.Allow_ALL_HOSTS_VALIDATOR
   

   @NonNull
@Override
general public Session onCreateSession() 
   return new Session() 
       @Override
       @NonNull
       general public Screen onCreateScreen(@Nullable Intent intent) 
           return new GrapeAppScreen(getCarContext())
       
   

Upcoming, shift to AndroidManifest and include many features within the major manifest tag:

Inside the Software tag add our assistance and action, really do not overlook minCarApiLevel as lack of this will toss an exception on app start:

Now we can add our software to the machine, confirm that you have an automotive emulator made, use automotive configuration, and hit operate. The app is run in Google Automotive App Host, so if it is your very first software on this machine, it might demand you to get to the play store and get it.

Which is how it looks:

The last issue, we’ll add a navigation button that will pop a Toast. Modify onGetTemplate() in Screen class, insert Motion and ActionStrip:

Motion motion = new Action.Builder()
       .setOnClickListener(
               () -> CarToast.makeText(getCarContext(), "Hello!", CarToast.Size_Limited).present())
       .setTitle("Say hi!")
       .make()

ActionStrip actionStrip = new 

Insert it to PaneTemplate:

return new PaneTemplate.Builder(
       new Pane.Builder()
               .addRow(row)
               .build()
)       .setActionStrip(actionStrip)
       .setHeaderAction(Action.App_ICON)
       .construct()

That is our HelloWorld app:

Now you have the HelloWorld instance app up and operating making use of Motor vehicle App Library. It requires treatment of displaying and arranging every thing on the monitor for us. The only accountability is to add screens and actions we would like to have(and a bit of configuration). Check the Auto application library to examine more of what can be accomplished with it, perform close to with making your application, and surely examine our web site quickly for additional AAOS application generation content material.