Find out how to Construct Your First App for Android Automotive OS – Grape Up
Android Automotive OS is getting extra recognition as automotive firms need to present their clients with a extra tailor-made expertise. Right here we share our information to constructing the primary app for AAOS.
Earlier than you begin, learn our first article about AAOS and get to know our assessment to pay attention to what to anticipate. Let’s strive making a easy Hiya World app for android automotive. To get an IDE, go to Android Studio Preview | Android Developers and get a canary construct:
Within the subsequent step, put together SDK, test and obtain the Automotive system picture in SDK supervisor. You will get any from api32, Android 9, or Android 10, however I don’t advocate the latest one as it is vitally laggy and crashes rather a lot proper now. There are additionally Volvo and Polestar photographs.
For these you must add hyperlinks to SDK Replace Websites:
https://developer.volvocars.com/sdk/volvo-sys-img.xml
https://developer.polestar.com/sdk/polestar2-sys-img.xml
Begin a brand new undertaking, go to File> New Venture and select automotive with no exercise
A pleasant and clear undertaking ought to be created, with none lessons: Go to construct.gradle and add the automobile app library into dependencies, refresh the undertaking to make it get
our new dependency:
implementation "androidx.automobile.app:app-automotive:1.2.0-rc01"
Let’s write some code, first our display screen class. Identify it as you need and make it lengthen Display screen class from android.automobile.app bundle and make it implement required strategies:
public class GrapeAppScreen extends Display screen
public GrapeAppScreen(@NonNull CarContext carContext)
tremendous(carContext);
@NonNull
@Override
public Template onGetTemplate()
Row row = new Row.Builder()
.setTitle("Thats our Grape App!").construct();
return new PaneTemplate.Builder(
new Pane.Builder()
.addRow(row)
.construct()
).setHeaderAction(Motion.APP_ICON).construct();
That ought to create a easy display screen with our icon and title, now create one other class extending CarAppService from the identical bundle and as effectively make it implement the required strategies. From createHostValidator() technique return a static one that permits all hostnames for the aim of this tutorial and return model new session with our display screen in onCreateSession(), move CarContext utilizing Session class getCarContext() technique:
public class GrapeAppService extends CarAppService
public GrapeAppService()
@NonNull
@Override
public HostValidator createHostValidator()
return HostValidator.ALLOW_ALL_HOSTS_VALIDATOR;
@NonNull
@Override
public Session onCreateSession()
return new Session()
@Override
@NonNull
public Display screen onCreateScreen(@Nullable Intent intent)
return new GrapeAppScreen(getCarContext());
;
Subsequent, transfer to AndroidManifest and add numerous options inside the primary manifest tag:
<uses-feature
android:title="android.{hardware}.sort.automotive"
android:required="true" />
<uses-feature
android:title="android.software program.automobile.templates_host"
android:required="true" />
<uses-feature
android:title="android.{hardware}.wifi"
android:required="false" />
<uses-feature
android:title="android.{hardware}.display screen.portrait"
android:required="false" />
<uses-feature
android:title="android.{hardware}.display screen.panorama"
android:required="false" />
Contained in the Software tag add our service and exercise, don’t overlook minCarApiLevel as lack of this may throw an exception on app begin:
<utility
android:allowBackup="true"
android:appCategory="audio"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@type/Theme.GrapeApplication">
<meta-data android:title="androidx.automobile.app.minCarApiLevel"
android:worth="1"
/>
<service
android:title="com.grapeup.grapeapplication.GrapeAppService"
android:exported="true">
<intent-filter>
<motion android:title="androidx.automobile.app.CarAppService" />
</intent-filter>
</service>
<exercise
android:title="androidx.automobile.app.exercise.CarAppActivity"
android:exported="true"
android:label="GrapeApp Starter"
android:launchMode="singleTask"
android:theme="@android:type/Theme.DeviceDefault.NoActionBar">
<intent-filter>
<motion android:title="android.intent.motion.MAIN" />
<class android:title="android.intent.class.LAUNCHER" />
</intent-filter>
<meta-data
android:title="distractionOptimized"
android:worth="true" />
</exercise>
</utility>
Now we will add our utility to the gadget, confirm that you’ve an automotive emulator created, use automotive configuration, and hit run. The app is run in Google Automotive App Host, so if it’s your first utility on this gadget, it could require you to get to the play retailer and get it.
That’s the way it appears:
The very last thing, we’ll add a navigation button that may pop a Toast. Modify onGetTemplate() in Display screen class, add Motion and ActionStrip:
Motion motion = new Motion.Builder()
.setOnClickListener(
() -> CarToast.makeText(getCarContext(), "Hiya!", CarToast.LENGTH_SHORT).present())
.setTitle("Say hello!")
.construct();
ActionStrip actionStrip = new
Add it to PaneTemplate:
return new PaneTemplate.Builder(
new Pane.Builder()
.addRow(row)
.construct()
) .setActionStrip(actionStrip)
.setHeaderAction(Motion.APP_ICON)
.construct();
That’s our HelloWorld app:
Now you will have the HelloWorld instance app up and working utilizing Automotive App Library. It takes care of displaying and arranging the whole lot on the display screen for us. The one duty is so as to add screens and actions we wish to have(and a little bit of configuration). Verify the Automotive app library to discover extra of what will be executed with it, mess around with creating your app, and positively test our weblog quickly for extra AAOS app creation content material.
