AppManager

@RequiresCarApi(value = 5)
fun dismissAlert(alertId: Int): Unit

Dismisses the alert with the given id.

This is a no-op if there is not an active alert with the given id

fun invalidate(): Unit

Requests the current template to be invalidated, which eventually triggers a call to onGetTemplate to get the new template to display.

fun setSurfaceCallback(surfaceCallback: SurfaceCallback?): Unit

Sets the SurfaceCallback to get changes and updates to the surface on which the app can draw custom content, or null to reset the listener.

This call requires the androidx.car.app.ACCESS_SURFACE permission to be declared.

The Surface can be used to draw custom content such as a navigation app's map.

Note that the listener relates to UI events and will be executed on the main thread using getMainLooper.

@RequiresCarApi(value = 5)
fun showAlert(alert: Alert): Unit

Shows an alert on the car screen.

Alerts with the same id, in the scope of the application, are considered equal. Even if their content differ.

Posting an alert while another alert is displayed would dismiss the old alert and replace it with the new one.

Only navigation templates support alerts. Triggering an alert while showing a non-supported template results in the cancellation of the alert.

fun showToast(text: CharSequence, duration: Int): Unit

Shows a toast on the car screen.