CarContext

Added in 1.0.0

Kotlin |Java

public class CarContext extends ContextWrapper

java.lang.Object
↳	android.content.Context
	↳	android.content.ContextWrapper
		↳	androidx.car.app.CarContext

Known direct subclasses

TestCarContext

TestCarContext

The CarContext that is used for testing.

The CarContext class is a ContextWrapper subclass accessible to your and Screen instances, which provides access to car services such as the ScreenManager for managing the screen stack, the AppManager for general app-related functionality such as accessing a surface for drawing your navigation app's map, and the NavigationManager used by turn-by-turn navigation apps to communicate navigation metadata and other navigation-related events with the host. See Access the navigation templates for a comprehensive list of library functionality available to navigation apps.

Whenever you use a CarContext to load resources, the following configuration elements come from the car screen's configuration, and not the phone:

Screen width.
Screen height.
Screen pixel density (DPI).
Night mode (See isDarkMode).

Please refer here, on how to use configuration qualifiers in your resources.

See also
`getCarService`

Summary

Constants
`static final String`	`ACTION_NAVIGATE = "androidx.car.app.action.NAVIGATE"` Standard action for navigating to a location.
`static final String`	`APP_SERVICE = "app"` Manages all app events such as invalidating the UI, showing a toast, etc.
`static final String`	`CAR_SERVICE = "car"` Internal usage only.
`static final String`	`@RequiresCarApi(value = 2) CONSTRAINT_SERVICE = "constraints"` Manages constraints for the app as enforced by the connected host.
`static final String`	`EXTRA_START_CAR_APP_BINDER_KEY = "androidx.car.app.extra.START_CAR_APP_BINDER_KEY"` Key for including a IStartCarApp in the notification `Intent`, for starting the app if it has not been opened yet.
`static final String`	`@RequiresCarApi(value = 3) HARDWARE_SERVICE = "hardware"` Manages access to androidx.car.app.hardware properties, sensors and actions.
`static final String`	`@ExperimentalCarApi MEDIA_PLAYBACK_SERVICE = "media_playback"` Manages the media requests from 3p apps such as providing a media session token,
`static final String`	`NAVIGATION_SERVICE = "navigation"` Manages all navigation events such as starting navigation when focus is granted, abandoning navigation when focus is lost, etc.
`static final String`	`SCREEN_SERVICE = "screen"` Manages the screens of the app, including the screen stack.
`static final String`	`SUGGESTION_SERVICE = "suggestion"` Manages posting suggestion events

Public methods
`void`	`finishCarApp()` Requests to finish the car app.
`@Nullable ComponentName`	`@RequiresCarApi(value = 2) getCallingComponent()` Return the component (service or activity) that invoked this car app.
`int`	`getCarAppApiLevel()` Retrieves the API level negotiated with the host.
`@NonNull Object`	`getCarService(@NonNull String name)` Provides a car service by name.
`@NonNull T`	`<T> getCarService(@NonNull Class<T> serviceClass)` Returns a car service by class.
`@NonNull String`	`getCarServiceName(@NonNull Class<Object> serviceClass)` Gets the name of the car service that is represented by the specified class.
`@Nullable HostInfo`	`getHostInfo()` Returns information about the host attached to this service.
`@NonNull OnBackPressedDispatcher`	`getOnBackPressedDispatcher()` Returns the `OnBackPressedDispatcher` that will be triggered when the user clicks a back button.
`boolean`	`isDarkMode()` Returns `true` if the car is set to dark mode.
`void`	`requestPermissions( @NonNull List<String> permissions, @NonNull OnRequestPermissionsListener listener )` Requests the provided `permissions` from the user, calling the provided `listener` in the main thread.
`void`	`requestPermissions( @NonNull List<String> permissions, @NonNull Executor executor, @NonNull OnRequestPermissionsListener listener )` Requests the provided `permissions` from the user.
`void`	`@RequiresCarApi(value = 2) setCarAppResult(int resultCode, @Nullable Intent data)` Sets the result of this car app.
`void`	`startCarApp(@NonNull Intent intent)` Starts a car app on the car screen.
`static void`	`startCarApp(@NonNull Intent notificationIntent, @NonNull Intent appIntent)` This method is deprecated. use `getCarApp` to create the pending intent for the notification action.

Inherited Constants

From android.content.Context

`static final String`	`ACCESSIBILITY_SERVICE = "accessibility"`
`static final String`	`ACCOUNT_SERVICE = "account"`
`static final String`	`ACTIVITY_SERVICE = "activity"`
`static final String`	`ALARM_SERVICE = "alarm"`
`static final String`	`APPWIDGET_SERVICE = "appwidget"`
`static final String`	`APP_OPS_SERVICE = "appops"`
`static final String`	`APP_SEARCH_SERVICE = "app_search"`
`static final String`	`AUDIO_SERVICE = "audio"`
`static final String`	`BATTERY_SERVICE = "batterymanager"`
`static final int`	`BIND_ABOVE_CLIENT = 8`
`static final int`	`BIND_ADJUST_WITH_ACTIVITY = 128`
`static final int`	`BIND_ALLOW_ACTIVITY_STARTS = 512`
`static final int`	`BIND_ALLOW_OOM_MANAGEMENT = 16`
`static final int`	`BIND_AUTO_CREATE = 1`
`static final int`	`BIND_DEBUG_UNBIND = 2`
`static final int`	`BIND_EXTERNAL_SERVICE = -2147483648`
`static final long`	`BIND_EXTERNAL_SERVICE_LONG = 4611686018427387904`
`static final int`	`BIND_IMPORTANT = 64`
`static final int`	`BIND_INCLUDE_CAPABILITIES = 4096`
`static final int`	`BIND_NOT_FOREGROUND = 4`
`static final int`	`BIND_NOT_PERCEPTIBLE = 256`
`static final int`	`BIND_PACKAGE_ISOLATED_PROCESS = 16384`
`static final int`	`BIND_SHARED_ISOLATED_PROCESS = 8192`
`static final int`	`BIND_WAIVE_PRIORITY = 32`
`static final String`	`BIOMETRIC_SERVICE = "biometric"`
`static final String`	`BLOB_STORE_SERVICE = "blob_store"`
`static final String`	`BLUETOOTH_SERVICE = "bluetooth"`
`static final String`	`BUGREPORT_SERVICE = "bugreport"`
`static final String`	`CAMERA_SERVICE = "camera"`
`static final String`	`CAPTIONING_SERVICE = "captioning"`
`static final String`	`CARRIER_CONFIG_SERVICE = "carrier_config"`
`static final String`	`CLIPBOARD_SERVICE = "clipboard"`
`static final String`	`COMPANION_DEVICE_SERVICE = "companiondevice"`
`static final String`	`CONNECTIVITY_DIAGNOSTICS_SERVICE = "connectivity_diagnostics"`
`static final String`	`CONNECTIVITY_SERVICE = "connectivity"`
`static final String`	`CONSUMER_IR_SERVICE = "consumer_ir"`
`static final String`	`CONTACT_KEYS_SERVICE = "contact_keys"`
`static final int`	`CONTEXT_IGNORE_SECURITY = 2`
`static final int`	`CONTEXT_INCLUDE_CODE = 1`
`static final int`	`CONTEXT_RESTRICTED = 4`
`static final String`	`CREDENTIAL_SERVICE = "credential"`
`static final String`	`CROSS_PROFILE_APPS_SERVICE = "crossprofileapps"`
`static final int`	`DEVICE_ID_DEFAULT = 0`
`static final int`	`DEVICE_ID_INVALID = -1`
`static final String`	`DEVICE_LOCK_SERVICE = "device_lock"`
`static final String`	`DEVICE_POLICY_SERVICE = "device_policy"`
`static final String`	`DISPLAY_HASH_SERVICE = "display_hash"`
`static final String`	`DISPLAY_SERVICE = "display"`
`static final String`	`DOMAIN_VERIFICATION_SERVICE = "domain_verification"`
`static final String`	`DOWNLOAD_SERVICE = "download"`
`static final String`	`DROPBOX_SERVICE = "dropbox"`
`static final String`	`EUICC_SERVICE = "euicc"`
`static final String`	`FILE_INTEGRITY_SERVICE = "file_integrity"`
`static final String`	`FINGERPRINT_SERVICE = "fingerprint"`
`static final String`	`GAME_SERVICE = "game"`
`static final String`	`GRAMMATICAL_INFLECTION_SERVICE = "grammatical_inflection"`
`static final String`	`HARDWARE_PROPERTIES_SERVICE = "hardware_properties"`
`static final String`	`HEALTHCONNECT_SERVICE = "healthconnect"`
`static final String`	`INPUT_METHOD_SERVICE = "input_method"`
`static final String`	`INPUT_SERVICE = "input"`
`static final String`	`IPSEC_SERVICE = "ipsec"`
`static final String`	`JOB_SCHEDULER_SERVICE = "jobscheduler"`
`static final String`	`KEYGUARD_SERVICE = "keyguard"`
`static final String`	`LAUNCHER_APPS_SERVICE = "launcherapps"`
`static final String`	`LAYOUT_INFLATER_SERVICE = "layout_inflater"`
`static final String`	`LOCALE_SERVICE = "locale"`
`static final String`	`LOCATION_SERVICE = "location"`
`static final String`	`MEDIA_COMMUNICATION_SERVICE = "media_communication"`
`static final String`	`MEDIA_METRICS_SERVICE = "media_metrics"`
`static final String`	`MEDIA_PROJECTION_SERVICE = "media_projection"`
`static final String`	`MEDIA_ROUTER_SERVICE = "media_router"`
`static final String`	`MEDIA_SESSION_SERVICE = "media_session"`
`static final String`	`MIDI_SERVICE = "midi"`
`static final int`	`MODE_APPEND = 32768`
`static final int`	`MODE_ENABLE_WRITE_AHEAD_LOGGING = 8`
`static final int`	`MODE_MULTI_PROCESS = 4` This field is deprecated.
`static final int`	`MODE_NO_LOCALIZED_COLLATORS = 16`
`static final int`	`MODE_PRIVATE = 0`
`static final int`	`MODE_WORLD_READABLE = 1` This field is deprecated.
`static final int`	`MODE_WORLD_WRITEABLE = 2` This field is deprecated.
`static final String`	`NETWORK_STATS_SERVICE = "netstats"`
`static final String`	`NFC_SERVICE = "nfc"`
`static final String`	`NOTIFICATION_SERVICE = "notification"`
`static final String`	`NSD_SERVICE = "servicediscovery"`
`static final String`	`OVERLAY_SERVICE = "overlay"`
`static final String`	`PEOPLE_SERVICE = "people"`
`static final String`	`PERFORMANCE_HINT_SERVICE = "performance_hint"`
`static final String`	`PERSISTENT_DATA_BLOCK_SERVICE = "persistent_data_block"`
`static final String`	`POWER_SERVICE = "power"`
`static final String`	`PRINT_SERVICE = "print"`
`static final String`	`PROFILING_SERVICE = "profiling"`
`static final int`	`RECEIVER_EXPORTED = 2`
`static final int`	`RECEIVER_NOT_EXPORTED = 4`
`static final int`	`RECEIVER_VISIBLE_TO_INSTANT_APPS = 1`
`static final String`	`RESTRICTIONS_SERVICE = "restrictions"`
`static final String`	`ROLE_SERVICE = "role"`
`static final String`	`SEARCH_SERVICE = "search"`
`static final String`	`SECURITY_STATE_SERVICE = "security_state"`
`static final String`	`SENSOR_SERVICE = "sensor"`
`static final String`	`SHORTCUT_SERVICE = "shortcut"`
`static final String`	`STATUS_BAR_SERVICE = "statusbar"`
`static final String`	`STORAGE_SERVICE = "storage"`
`static final String`	`STORAGE_STATS_SERVICE = "storagestats"`
`static final String`	`SYSTEM_HEALTH_SERVICE = "systemhealth"`
`static final String`	`TELECOM_SERVICE = "telecom"`
`static final String`	`TELEPHONY_IMS_SERVICE = "telephony_ims"`
`static final String`	`TELEPHONY_SERVICE = "phone"`
`static final String`	`TELEPHONY_SUBSCRIPTION_SERVICE = "telephony_subscription_service"`
`static final String`	`TEXT_CLASSIFICATION_SERVICE = "textclassification"`
`static final String`	`TEXT_SERVICES_MANAGER_SERVICE = "textservices"`
`static final String`	`TV_INPUT_SERVICE = "tv_input"`
`static final String`	`TV_INTERACTIVE_APP_SERVICE = "tv_interactive_app"`
`static final String`	`UI_MODE_SERVICE = "uimode"`
`static final String`	`USAGE_STATS_SERVICE = "usagestats"`
`static final String`	`USB_SERVICE = "usb"`
`static final String`	`USER_SERVICE = "user"`
`static final String`	`VIBRATOR_MANAGER_SERVICE = "vibrator_manager"`
`static final String`	`VIBRATOR_SERVICE = "vibrator"` This field is deprecated.
`static final String`	`VIRTUAL_DEVICE_SERVICE = "virtualdevice"`
`static final String`	`VPN_MANAGEMENT_SERVICE = "vpn_management"`
`static final String`	`WALLPAPER_SERVICE = "wallpaper"`
`static final String`	`WIFI_AWARE_SERVICE = "wifiaware"`
`static final String`	`WIFI_P2P_SERVICE = "wifip2p"`
`static final String`	`WIFI_RTT_RANGING_SERVICE = "wifirtt"`
`static final String`	`WIFI_SERVICE = "wifi"`
`static final String`	`WINDOW_SERVICE = "window"`

Inherited methods

From android.content.Context

`final int`	`getColor(int id)`
`final ColorStateList`	`getColorStateList(int id)`
`final Drawable`	`getDrawable(int id)`
`final String`	`getString(int resId)`
`final T`	`<T> getSystemService(Class<T> serviceClass)`
`final CharSequence`	`getText(int resId)`
`final TypedArray`	`obtainStyledAttributes(int[] attrs)`
`void`	`revokeSelfPermissionOnKill(String permName)`
`void`	`sendBroadcastWithMultiplePermissions( Intent intent, String[] receiverPermissions )`

From android.content.ContextWrapper

`void`	`attachBaseContext(Context base)`
`boolean`	`bindIsolatedService( Intent service, int flags, String instanceName, Executor executor, ServiceConnection conn )`
`boolean`	`bindService(Intent service, ServiceConnection conn, int flags)`
`boolean`	`bindServiceAsUser( Intent service, ServiceConnection conn, int flags, UserHandle user )`
`int`	`checkCallingOrSelfPermission(String permission)`
`int`	`checkCallingOrSelfUriPermission(Uri uri, int modeFlags)`
`int[]`	`checkCallingOrSelfUriPermissions(List<Uri> uris, int modeFlags)`
`int`	`checkCallingPermission(String permission)`
`int`	`checkCallingUriPermission(Uri uri, int modeFlags)`
`int[]`	`checkCallingUriPermissions(List<Uri> uris, int modeFlags)`
`int`	`checkContentUriPermissionFull(Uri uri, int pid, int uid, int modeFlags)`
`int`	`checkPermission(String permission, int pid, int uid)`
`int`	`checkSelfPermission(String permission)`
`int`	`checkUriPermission(Uri uri, int pid, int uid, int modeFlags)`
`int[]`	`checkUriPermissions(List<Uri> uris, int pid, int uid, int modeFlags)`
`void`	`clearWallpaper()` This method is deprecated.
`Context`	`createAttributionContext(String attributionTag)`
`Context`	`createConfigurationContext(Configuration overrideConfiguration)`
`Context`	`createContext(ContextParams contextParams)`
`Context`	`createContextForSplit(String splitName)`
`Context`	`createDeviceContext(int deviceId)`
`Context`	`createDeviceProtectedStorageContext()`
`Context`	`createDisplayContext(Display display)`
`Context`	`createPackageContext(String packageName, int flags)`
`Context`	`createWindowContext(int type, Bundle options)`
`String[]`	`databaseList()`
`boolean`	`deleteDatabase(String name)`
`boolean`	`deleteFile(String name)`
`boolean`	`deleteSharedPreferences(String name)`
`void`	`enforceCallingOrSelfPermission(String permission, String message)`
`void`	`enforceCallingOrSelfUriPermission( Uri uri, int modeFlags, String message )`
`void`	`enforceCallingPermission(String permission, String message)`
`void`	`enforceCallingUriPermission(Uri uri, int modeFlags, String message)`
`void`	`enforcePermission(String permission, int pid, int uid, String message)`
`void`	`enforceUriPermission( Uri uri, int pid, int uid, int modeFlags, String message )`
`String[]`	`fileList()`
`Context`	`getApplicationContext()`
`ApplicationInfo`	`getApplicationInfo()`
`AssetManager`	`getAssets()`
`AttributionSource`	`getAttributionSource()`
`String`	`getAttributionTag()`
`Context`	`getBaseContext()`
`File`	`getCacheDir()`
`ClassLoader`	`getClassLoader()`
`File`	`getCodeCacheDir()`
`ContentResolver`	`getContentResolver()`
`File`	`getDataDir()`
`File`	`getDatabasePath(String name)`
`int`	`getDeviceId()`
`File`	`getDir(String name, int mode)`
`Display`	`getDisplay()`
`File`	`getExternalCacheDir()`
`File[]`	`getExternalCacheDirs()`
`File`	`getExternalFilesDir(String type)`
`File[]`	`getExternalFilesDirs(String type)`
`File[]`	`getExternalMediaDirs()` This method is deprecated.
`File`	`getFileStreamPath(String name)`
`File`	`getFilesDir()`
`Executor`	`getMainExecutor()`
`Looper`	`getMainLooper()`
`File`	`getNoBackupFilesDir()`
`File`	`getObbDir()`
`File[]`	`getObbDirs()`
`String`	`getOpPackageName()`
`String`	`getPackageCodePath()`
`PackageManager`	`getPackageManager()`
`String`	`getPackageName()`
`String`	`getPackageResourcePath()`
`ContextParams`	`getParams()`
`Resources`	`getResources()`
`SharedPreferences`	`getSharedPreferences(String name, int mode)`
`Object`	`getSystemService(String name)`
`String`	`getSystemServiceName(Class<Object> serviceClass)`
`Resources.Theme`	`getTheme()`
`Drawable`	`getWallpaper()` This method is deprecated.
`int`	`getWallpaperDesiredMinimumHeight()` This method is deprecated.
`int`	`getWallpaperDesiredMinimumWidth()` This method is deprecated.
`void`	`grantUriPermission(String toPackage, Uri uri, int modeFlags)`
`boolean`	`isDeviceProtectedStorage()`
`boolean`	`isRestricted()`
`boolean`	`isUiContext()`
`boolean`	`moveDatabaseFrom(Context sourceContext, String name)`
`boolean`	`moveSharedPreferencesFrom(Context sourceContext, String name)`
`FileInputStream`	`openFileInput(String name)`
`FileOutputStream`	`openFileOutput(String name, int mode)`
`SQLiteDatabase`	`openOrCreateDatabase( String name, int mode, SQLiteDatabase.CursorFactory factory )`
`Drawable`	`peekWallpaper()` This method is deprecated.
`void`	`registerComponentCallbacks(ComponentCallbacks callback)`
`void`	`registerDeviceIdChangeListener(Executor executor, IntConsumer listener)`
`Intent`	`registerReceiver(BroadcastReceiver receiver, IntentFilter filter)`
`void`	`removeStickyBroadcast(Intent intent)` This method is deprecated.
`void`	`removeStickyBroadcastAsUser(Intent intent, UserHandle user)` This method is deprecated.
`void`	`revokeSelfPermissionsOnKill(Collection<String> permissions)`
`void`	`revokeUriPermission(Uri uri, int modeFlags)`
`void`	`sendBroadcast(Intent intent)`
`void`	`sendBroadcastAsUser(Intent intent, UserHandle user)`
`void`	`sendOrderedBroadcast(Intent intent, String receiverPermission)`
`void`	`sendOrderedBroadcastAsUser( Intent intent, UserHandle user, String receiverPermission, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras )`
`void`	`sendStickyBroadcast(Intent intent)` This method is deprecated.
`void`	`sendStickyBroadcastAsUser(Intent intent, UserHandle user)` This method is deprecated.
`void`	`sendStickyOrderedBroadcast( Intent intent, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras )` This method is deprecated.
`void`	`sendStickyOrderedBroadcastAsUser( Intent intent, UserHandle user, BroadcastReceiver resultReceiver, Handler scheduler, int initialCode, String initialData, Bundle initialExtras )` This method is deprecated.
`void`	`setTheme(int resid)`
`void`	`setWallpaper(Bitmap bitmap)` This method is deprecated.
`void`	`startActivities(Intent[] intents)`
`void`	`startActivity(Intent intent)`
`ComponentName`	`startForegroundService(Intent service)`
`boolean`	`startInstrumentation( ComponentName className, String profileFile, Bundle arguments )`
`void`	`startIntentSender( IntentSender intent, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags )`
`ComponentName`	`startService(Intent service)`
`boolean`	`stopService(Intent name)`
`void`	`unbindService(ServiceConnection conn)`
`void`	`unregisterComponentCallbacks(ComponentCallbacks callback)`
`void`	`unregisterDeviceIdChangeListener(IntConsumer listener)`
`void`	`unregisterReceiver(BroadcastReceiver receiver)`
`void`	`updateServiceGroup(ServiceConnection conn, int group, int importance)`

Constants

ACTION_NAVIGATE

Added in 1.0.0

public static final String ACTION_NAVIGATE = "androidx.car.app.action.NAVIGATE"

Standard action for navigating to a location.

Used as the Intent's action for starting a navigation via startCarApp.

APP_SERVICE

Added in 1.0.0

public static final String APP_SERVICE = "app"

Manages all app events such as invalidating the UI, showing a toast, etc.

CAR_SERVICE

Added in 1.0.0

public static final String CAR_SERVICE = "car"

Internal usage only. Top level binder to host.

CONSTRAINT_SERVICE

Added in 1.1.0

@RequiresCarApi(value = 2)
public static final String CONSTRAINT_SERVICE = "constraints"

Manages constraints for the app as enforced by the connected host.

EXTRA_START_CAR_APP_BINDER_KEY

Added in 1.0.0

public static final String EXTRA_START_CAR_APP_BINDER_KEY = "androidx.car.app.extra.START_CAR_APP_BINDER_KEY"

Key for including a IStartCarApp in the notification Intent, for starting the app if it has not been opened yet.

HARDWARE_SERVICE

Added in 1.1.0

@RequiresCarApi(value = 3)
public static final String HARDWARE_SERVICE = "hardware"

Manages access to androidx.car.app.hardware properties, sensors and actions.

MEDIA_PLAYBACK_SERVICE

Added in 1.4.0

@ExperimentalCarApi
public static final String MEDIA_PLAYBACK_SERVICE = "media_playback"

Manages the media requests from 3p apps such as pro

CarContext

Summary

Constants

Public methods

Inherited Constants

Inherited methods

Constants

ACTION_NAVIGATE

APP_SERVICE

CAR_SERVICE

CONSTRAINT_SERVICE

EXTRA_START_CAR_APP_BINDER_KEY

HARDWARE_SERVICE

MEDIA_PLAYBACK_SERVICE