CallScreeningService

Kotlin |Java

abstract class CallScreeningService : Service

kotlin.Any
↳	android.content.Context
	↳	android.content.ContextWrapper
		↳	android.app.Service
			↳	android.telecom.CallScreeningService

This service can be implemented by the default dialer (see TelecomManager#getDefaultDialerPackage()) or a third party app to allow or disallow incoming calls before they are shown to a user. A can also see outgoing calls for the purpose of providing caller ID services for those calls.

Below is an example manifest registration for a CallScreeningService.

<code>&lt;service android:name="your.package.YourCallScreeningServiceImplementation"
           android:permission="android.permission.BIND_SCREENING_SERVICE"&gt;
       &lt;intent-filter&gt;
           &lt;action android:name="android.telecom.CallScreeningService"/&gt;
       &lt;/intent-filter&gt;
  &lt;/service&gt;
  </code>

A CallScreeningService performs two functions:

Call blocking/screening - the service can choose which calls will ring on the user's device, and which will be silently sent to voicemail.
Call identification - services which provide call identification functionality can display a user-interface of their choosing which contains identifying information for a call.

Becoming the CallScreeningService

Telecom will bind to a single app chosen by the user which implements the CallScreeningService API when there are new incoming and outgoing calls.

The code snippet below illustrates how your app can request that it fills the call screening role.

<code>private static final int REQUEST_ID = 1;
 
  public void requestRole() {
      RoleManager roleManager = (RoleManager) getSystemService(ROLE_SERVICE);
      Intent intent = roleManager.createRequestRoleIntent(RoleManager.ROLE_CALL_SCREENING);
      startActivityForResult(intent, REQUEST_ID);
  }
 
  &amp;#64;Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
      if (requestCode == REQUEST_ID) {
          if (resultCode == android.app.Activity.RESULT_OK) {
              // Your app is now the call screening app
          } else {
              // Your app is not the call screening app
          }
      }
  }
  </code>

CallScreeningService Lifecycle

The framework binds to the CallScreeningService implemented by the user-chosen app filling the android.app.role.RoleManager#ROLE_CALL_SCREENING role when incoming calls are received (prior to ringing) and when outgoing calls are placed. The platform calls the onScreenCall(android.telecom.Call.Details) method to provide your service with details about the call.

For incoming calls, the CallScreeningService must call respondToCall(android.telecom.Call.Details,android.telecom.CallScreeningService.CallResponse) within 5 seconds of being bound to indicate to the platform whether the call should be blocked or not. Your app must do this even if it is primarily performing caller ID operations and not screening calls. It is important to perform screening operations in a timely matter as the user's device will not begin ringing until the response is received (or the timeout is hit). A CallScreeningService may choose to perform local database lookups to help determine if a call should be screened or not; care should be taken to ensure the timeout is not repeatedly hit, causing delays in the incoming call flow.

If your app provides a caller ID experience, it should launch an activity to show the caller ID information from onScreenCall(android.telecom.Call.Details).

Summary

Nested classes
open	`CallResponse` Information about how to respond to an incoming call.

Constants
static String	`SERVICE_INTERFACE` The `Intent` that must be declared as handled by the service.

Inherited constants

From class Context

`String`	`ACCESSIBILITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.view.accessibility.AccessibilityManager` for giving the user feedback for UI events through the registered event listeners.
`String`	`ACCOUNT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.accounts.AccountManager` for receiving intents at a time of your choosing.
`String`	`ACTIVITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.ActivityManager` for interacting with the global system state.
`String`	`ALARM_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.AlarmManager` for receiving intents at a time of your choosing.
`String`	`APPWIDGET_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.appwidget.AppWidgetManager` for accessing AppWidgets.
`String`	`APP_OPS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.AppOpsManager` for tracking application operations on the device.
`String`	`APP_SEARCH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `android.app.appsearch.AppSearchManager` for indexing and querying app data managed by the system.
`String`	`AUDIO_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.media.AudioManager` for handling management of volume, ringer modes and audio routing.
`String`	`BATTERY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.BatteryManager` for managing battery state.
`Int`	`BIND_ABOVE_CLIENT` Flag for #bindService: indicates that the client application binding to this service considers the service to be more important than the app itself. When set, the platform will try to have the out of memory killer kill the app before it kills the service it is bound to, though this is not guaranteed to be the case.
`Int`	`BIND_ADJUST_WITH_ACTIVITY` Flag for #bindService: If binding from an activity, allow the target service's process importance to be raised based on whether the activity is visible to the user, regardless whether another flag is used to reduce the amount that the client process's overall importance is used to impact it.
`Int`	`BIND_ALLOW_ACTIVITY_STARTS` Flag for #bindService: If binding from an app that is visible, the bound service is allowed to start an activity from background. This was the default behavior before SDK version `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`. Since then, the default behavior changed to disallow the bound service to start a background activity even if the app bound to it is in foreground, unless this flag is specified when binding.
`Int`	`BIND_ALLOW_OOM_MANAGEMENT` Flag for #bindService: allow the process hosting the bound service to go through its normal memory management. It will be treated more like a running service, allowing the system to (temporarily) expunge the process if low on memory or for some other whim it may have, and being more aggressive about making it a candidate to be killed (and restarted) if running for a long time.
`Int`	`BIND_AUTO_CREATE` Flag for #bindService: automatically create the service as long as the binding exists. Note that while this will create the service, its `android.app.Service#onStartCommand` method will still only be called due to an explicit call to `startService`. Even without that, though, this still provides you with access to the service object while the service is created. Note that prior to `android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH`, not supplying this flag would also impact how important the system consider's the target service's process to be. When set, the only way for it to be raised was by binding from a service in which case it will only be important when that activity is in the foreground. Now to achieve this behavior you must explicitly supply the new flag `BIND_ADJUST_WITH_ACTIVITY`. For compatibility, old applications that don't specify `BIND_AUTO_CREATE` will automatically have the flags `BIND_WAIVE_PRIORITY` and `BIND_ADJUST_WITH_ACTIVITY` set for them in order to achieve the same result.
`Int`	`BIND_DEBUG_UNBIND` Flag for #bindService: include debugging help for mismatched calls to unbind. When this flag is set, the callstack of the following `unbindService` call is retained, to be printed if a later incorrect unbind call is made. Note that doing this requires retaining information about the binding that was made for the lifetime of the app, resulting in a leak -- this should only be used for debugging.
`Int`	`BIND_EXTERNAL_SERVICE` Flag for #bindService: The service being bound is an `isolated`, `external` service. This binds the service into the calling application's package, rather than the package in which the service is declared. When using this flag, the code for the service being bound will execute under the calling application's package name and user ID. Because the service must be an isolated process, it will not have direct access to the application's data, though. The purpose of this flag is to allow applications to provide services that are attributed to the app using the service, rather than the application providing the service. This flag is NOT compatible with `BindServiceFlags`. If you need to use `BindServiceFlags`, you must use `BIND_EXTERNAL_SERVICE_LONG` instead.
`Long`	`BIND_EXTERNAL_SERVICE_LONG` Works in the same way as `BIND_EXTERNAL_SERVICE`, but it's defined as a `long` value that is compatible to `BindServiceFlags`.
`Int`	`BIND_IMPORTANT` Flag for #bindService: this service is very important to the client, so should be brought to the foreground process level when the client is. Normally a process can only be raised to the visibility level by a client, even if that client is in the foreground.
`Int`	`BIND_INCLUDE_CAPABILITIES` Flag for #bindService: If binding from an app that has specific capabilities due to its foreground state such as an activity or foreground service, then this flag will allow the bound app to get the same capabilities, as long as it has the required permissions as well. If binding from a top app and its target SDK version is at or above `android.os.Build.VERSION_CODES#R`, the app needs to explicitly use BIND_INCLUDE_CAPABILITIES flag to pass all capabilities to the service so the other app can have while-in-use access such as location, camera, microphone from background. If binding from a top app and its target SDK version is below `android.os.Build.VERSION_CODES#R`, BIND_INCLUDE_CAPABILITIES is implicit.
`Int`	`BIND_NOT_FOREGROUND` Flag for #bindService: don't allow this binding to raise the target service's process to the foreground scheduling priority. It will still be raised to at least the same memory priority as the client (so that its process will not be killable in any situation where the client is not killable), but for CPU scheduling purposes it may be left in the background. This only has an impact in the situation where the binding client is a foreground process and the target service is in a background process.
`Int`	`BIND_NOT_PERCEPTIBLE` Flag for #bindService: If binding from an app that is visible or user-perceptible, lower the target service's importance to below the perceptible level. This allows the system to (temporarily) expunge the bound process from memory to make room for more important user-perceptible processes.
`Int`	`BIND_PACKAGE_ISOLATED_PROCESS` Flag for #bindIsolatedService: Bind the service into a shared isolated process, but only with other isolated services from the same package that declare the same process name. Specifying this flag allows multiple isolated services defined in the same package to be running in a single shared isolated process. This shared isolated process must be specified since this flag will not work with the default application process. This flag is different from `BIND_SHARED_ISOLATED_PROCESS` since it only allows binding services from the same package in the same shared isolated process. This also means the shared package isolated process is global, and not scoped to each potential calling app. The shared isolated process instance is identified by the "android:process" attribute defined by the service. This flag cannot be used without this attribute set.
`Int`	`BIND_SHARED_ISOLATED_PROCESS` Flag for #bindIsolatedService: Bind the service into a shared isolated process. Specifying this flag allows multiple isolated services to be running in a single shared isolated process. The shared isolated process instance is identified by the instanceName parameter in `bindIsolatedService(android.content.Intent,int,java.lang.String,java.util.concurrent.Executor,android.content.ServiceConnection)`. Subsequent calls to #bindIsolatedService with the same instanceName will cause the isolated service to be co-located in the same shared isolated process. Note that the shared isolated process is scoped to the calling app; once created, only the calling app can bind additional isolated services into the shared process. However, the services themselves can come from different APKs and therefore different vendors. Only services that set the `android.R.attr#allowSharedIsolatedProcess` attribute to `true` are allowed to be bound into a shared isolated process.
`Int`	`BIND_WAIVE_PRIORITY` Flag for #bindService: don't impact the scheduling or memory management priority of the target service's hosting process. Allows the service's process to be managed on the background LRU list just like a regular application process in the background.
`String`	`BIOMETRIC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.hardware.biometrics.BiometricManager` for handling biometric and PIN/pattern/password authentication.
`String`	`BLOB_STORE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for contributing and accessing data blobs from the blob store maintained by the system.
`String`	`BLUETOOTH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.bluetooth.BluetoothManager` for using Bluetooth.
`String`	`BUGREPORT_SERVICE` Service to capture a bugreport.
`String`	`CAMERA_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.hardware.camera2.CameraManager` for interacting with camera devices.
`String`	`CAPTIONING_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.view.accessibility.CaptioningManager` for obtaining captioning properties and listening for changes in captioning preferences.
`String`	`CARRIER_CONFIG_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.telephony.CarrierConfigManager` for reading carrier configuration values.
`String`	`CLIPBOARD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.content.ClipboardManager` for accessing and modifying the contents of the global clipboard.
`String`	`COMPANION_DEVICE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.companion.CompanionDeviceManager` for managing companion devices
`String`	`CONNECTIVITY_DIAGNOSTICS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for performing network connectivity diagnostics as well as receiving network connectivity information from the system.
`String`	`CONNECTIVITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for handling management of network connections.
`String`	`CONSUMER_IR_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.hardware.ConsumerIrManager` for transmitting infrared signals from the device.
`String`	`CONTACT_KEYS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `E2eeContactKeysManager` to managing contact keys.
`Int`	`CONTEXT_IGNORE_SECURITY` Flag for use with `createPackageContext`: ignore any security restrictions on the Context being requested, allowing it to always be loaded. For use with `CONTEXT_INCLUDE_CODE` to allow code to be loaded into a process even when it isn't safe to do so. Use with extreme care!
`Int`	`CONTEXT_INCLUDE_CODE` Flag for use with `createPackageContext`: include the application code with the context. This means loading code into the caller's process, so that `getClassLoader()` can be used to instantiate the application's classes. Setting this flags imposes security restrictions on what application context you can access; if the requested application can not be safely loaded into your process, java.lang.SecurityException will be thrown. If this flag is not set, there will be no restrictions on the packages that can be loaded, but `getClassLoader` will always return the default system class loader.
`Int`	`CONTEXT_RESTRICTED` Flag for use with `createPackageContext`: a restricted context may disable specific features. For instance, a View associated with a restricted context would ignore particular XML attributes.
`String`	`CREDENTIAL_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.credentials.CredentialManager` to authenticate a user to your app.
`String`	`CROSS_PROFILE_APPS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.content.pm.CrossProfileApps` for cross profile operations.
`Int`	`DEVICE_ID_DEFAULT` The default device ID, which is the ID of the primary (non-virtual) device.
`Int`	`DEVICE_ID_INVALID` Invalid device ID.
`String`	`DEVICE_LOCK_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.devicelock.DeviceLockManager`.
`String`	`DEVICE_POLICY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.admin.DevicePolicyManager` for working with global device policy management.
`String`	`DISPLAY_HASH_SERVICE` Use with `getSystemService(java.lang.String)` to access `android.view.displayhash.DisplayHashManager` to handle display hashes.
`String`	`DISPLAY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.hardware.display.DisplayManager` for interacting with display devices.
`String`	`DOMAIN_VERIFICATION_SERVICE` Use with `getSystemService(java.lang.String)` to access `android.content.pm.verify.domain.DomainVerificationManager` to retrieve approval and user state for declared web domains.
`String`	`DOWNLOAD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.DownloadManager` for requesting HTTP downloads.
`String`	`DROPBOX_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.DropBoxManager` instance for recording diagnostic logs.
`String`	`EUICC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.telephony.euicc.EuiccManager` to manage the device eUICC (embedded SIM).
`String`	`FILE_INTEGRITY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `android.security.FileIntegrityManager`.
`String`	`FINGERPRINT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.hardware.fingerprint.FingerprintManager` for handling management of fingerprints.
`String`	`GAME_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `GameManager`.
`String`	`GRAMMATICAL_INFLECTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `GrammaticalInflectionManager`.
`String`	`HARDWARE_PROPERTIES_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.HardwarePropertiesManager` for accessing the hardware properties service.
`String`	`HEALTHCONNECT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.health.connect.HealthConnectManager`.
`String`	`INPUT_METHOD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.view.inputmethod.InputMethodManager` for accessing input methods.
`String`	`INPUT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.hardware.input.InputManager` for interacting with input devices.
`String`	`IPSEC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.net.IpSecManager` for encrypting Sockets or Networks with IPSec.
`String`	`JOB_SCHEDULER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a instance for managing occasional background tasks.
`String`	`KEYGUARD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.KeyguardManager` for controlling keyguard.
`String`	`LAUNCHER_APPS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.content.pm.LauncherApps` for querying and monitoring launchable apps across profiles of a user.
`String`	`LAYOUT_INFLATER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.view.LayoutInflater` for inflating layout resources in this context.
`String`	`LOCALE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.LocaleManager`.
`String`	`LOCATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for controlling location updates.
`String`	`MEDIA_COMMUNICATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.media.MediaCommunicationManager` for managing `android.media.MediaSession2`.
`String`	`MEDIA_METRICS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.media.metrics.MediaMetricsManager` for interacting with media metrics on the device.
`String`	`MEDIA_PROJECTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a instance for managing media projection sessions.
`String`	`MEDIA_ROUTER_SERVICE` Use with #getSystemService to retrieve a `android.media.MediaRouter` for controlling and managing routing of media.
`String`	`MEDIA_SESSION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.media.session.MediaSessionManager` for managing media Sessions.
`String`	`MIDI_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.media.midi.MidiManager` for accessing the MIDI service.
`Int`	`MODE_APPEND` File creation mode: for use with `openFileOutput`, if the file already exists then write data to the end of the existing file instead of erasing it.
`Int`	`MODE_ENABLE_WRITE_AHEAD_LOGGING` Database open flag: when set, the database is opened with write-ahead logging enabled by default.
`Int`	`MODE_MULTI_PROCESS` SharedPreference loading flag: when set, the file on disk will be checked for modification even if the shared preferences instance is already loaded in this process. This behavior is sometimes desired in cases where the application has multiple processes, all writing to the same SharedPreferences file. Generally there are better forms of communication between processes, though. This was the legacy (but undocumented) behavior in and before Gingerbread (Android 2.3) and this flag is implied when targeting such releases. For applications targeting SDK versions greater than Android 2.3, this flag must be explicitly set if desired.
`Int`	`MODE_NO_LOCALIZED_COLLATORS` Database open flag: when set, the database is opened without support for localized collators.
`Int`	`MODE_PRIVATE` File creation mode: the default mode, where the created file can only be accessed by the calling application (or all applications sharing the same user ID).
`Int`	`MODE_WORLD_READABLE` File creation mode: allow all other applications to have read access to the created file. Starting from `android.os.Build.VERSION_CODES#N`, attempting to use this mode throws a `SecurityException`.
`Int`	`MODE_WORLD_WRITEABLE` File creation mode: allow all other applications to have write access to the created file. Starting from `android.os.Build.VERSION_CODES#N`, attempting to use this mode will throw a `SecurityException`.
`String`	`NETWORK_STATS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for querying network usage stats.
`String`	`NFC_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.nfc.NfcManager` for using NFC.
`String`	`NOTIFICATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.NotificationManager` for informing the user of background events.
`String`	`NSD_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for handling management of network service discovery
`String`	`OVERLAY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for managing overlay packages.
`String`	`PEOPLE_SERVICE` Use with `getSystemService(java.lang.String)` to access a `PeopleManager` to interact with your published conversations.
`String`	`PERFORMANCE_HINT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.PerformanceHintManager` for accessing the performance hinting service.
`String`	`PERSISTENT_DATA_BLOCK_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a instance for interacting with a storage device that lives across factory resets.
`String`	`POWER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.PowerManager` for controlling power management, including "wake locks," which let you keep the device on while you're running long tasks.
`String`	`PRINT_SERVICE` `android.print.PrintManager` for printing and managing printers and print tasks.
`String`	`PROFILING_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `android.os.ProfilingManager`.
`Int`	`RECEIVER_EXPORTED` Flag for #registerReceiver: The receiver can receive broadcasts from other Apps. Has the same behavior as marking a statically registered receiver with "exported=true"
`Int`	`RECEIVER_NOT_EXPORTED` Flag for #registerReceiver: The receiver cannot receive broadcasts from other Apps. Has the same behavior as marking a statically registered receiver with "exported=false"
`Int`	`RECEIVER_VISIBLE_TO_INSTANT_APPS` Flag for #registerReceiver: The receiver can receive broadcasts from Instant Apps.
`String`	`RESTRICTIONS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.content.RestrictionsManager` for retrieving application restrictions and requesting permissions for restricted operations.
`String`	`ROLE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.role.RoleManager` for managing roles.
`String`	`SEARCH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for handling searches. `Configuration#UI_MODE_TYPE_WATCH` does not support `android.app.SearchManager`.
`String`	`SECURITY_STATE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.SecurityStateManager` for accessing the security state manager service.
`String`	`SENSOR_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for accessing sensors.
`String`	`SHORTCUT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.content.pm.ShortcutManager` for accessing the launcher shortcut service.
`String`	`STATUS_BAR_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for interacting with the status bar and quick settings.
`String`	`STORAGE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for accessing system storage functions.
`String`	`STORAGE_STATS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for accessing system storage statistics.
`String`	`SYSTEM_HEALTH_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.health.SystemHealthManager` for accessing system health (battery, power, memory, etc) metrics.
`String`	`TELECOM_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.telecom.TelecomManager` to manage telecom-related features of the device.
`String`	`TELEPHONY_IMS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve an `android.telephony.ims.ImsManager`.
`String`	`TELEPHONY_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.telephony.TelephonyManager` for handling management the telephony features of the device.
`String`	`TELEPHONY_SUBSCRIPTION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.telephony.SubscriptionManager` for handling management the telephony subscriptions of the device.
`String`	`TEXT_CLASSIFICATION_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `TextClassificationManager` for text classification services.
`String`	`TEXT_SERVICES_MANAGER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.view.textservice.TextServicesManager` for accessing text services.
`String`	`TV_INPUT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.media.tv.TvInputManager` for interacting with TV inputs on the device.
`String`	`TV_INTERACTIVE_APP_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.media.tv.interactive.TvInteractiveAppManager` for interacting with TV interactive applications on the device.
`String`	`UI_MODE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.app.UiModeManager` for controlling UI modes.
`String`	`USAGE_STATS_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for querying device usage stats.
`String`	`USB_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for access to USB devices (as a USB host) and for controlling this device's behavior as a USB device.
`String`	`USER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.UserManager` for managing users on devices that support multiple users.
`String`	`VIBRATOR_MANAGER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.VibratorManager` for accessing the device vibrators, interacting with individual ones and playing synchronized effects on multiple vibrators.
`String`	`VIBRATOR_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.os.Vibrator` for interacting with the vibration hardware.
`String`	`VIRTUAL_DEVICE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.companion.virtual.VirtualDeviceManager` for managing virtual devices. On devices without `PackageManager#FEATURE_COMPANION_DEVICE_SETUP` system feature the `getSystemService(java.lang.String)` will return `null`.
`String`	`VPN_MANAGEMENT_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.net.VpnManager` to manage profiles for the platform built-in VPN.
`String`	`WALLPAPER_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a com.android.server.WallpaperService for accessing wallpapers.
`String`	`WIFI_AWARE_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.net.wifi.aware.WifiAwareManager` for handling management of Wi-Fi Aware.
`String`	`WIFI_P2P_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for handling management of Wi-Fi peer-to-peer connections.
`String`	`WIFI_RTT_RANGING_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for ranging devices with wifi.
`String`	`WIFI_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a for handling management of Wi-Fi access.
`String`	`WINDOW_SERVICE` Use with `getSystemService(java.lang.String)` to retrieve a `android.view.WindowManager` for accessing the system's window manager.

From class Service

`Int`	`START_CONTINUATION_MASK` Bits returned by `onStartCommand` describing how to continue the service if it is killed. May be `START_STICKY`, `START_NOT_STICKY`, `START_REDELIVER_INTENT`, or `START_STICKY_COMPATIBILITY`.
`Int`	`START_FLAG_REDELIVERY` This flag is set in `onStartCommand` if the Intent is a re-delivery of a previously delivered intent, because the service had previously returned `START_REDELIVER_INTENT` but had been killed before calling `stopSelf(int)` for that Intent.
`Int`	`START_FLAG_RETRY` This flag is set in `onStartCommand` if the Intent is a retry because the original attempt never got to or returned from `onStartCommand(android.content.Intent,int,int)`.
`Int`	`START_NOT_STICKY` Constant to return from `onStartCommand`: if this service's process is killed while it is started (after returning from `onStartCommand`), and there are no new start intents to deliver to it, then take the service out of the started state and don't recreate until a future explicit call to `Context.startService(Intent)`. The service will not receive a `onStartCommand(android.content.Intent,int,int)` call with a null Intent because it will not be restarted if there are no pending Intents to deliver. This mode makes sense for things that want to do some work as a result of being started, but can be stopped when under memory pressure and will explicit start themselves again later to do more work. An example of such a service would be one that polls for data from a server: it could schedule an alarm to poll every N minutes by having the alarm start its service. When its `onStartCommand` is called from the alarm, it schedules a new alarm for N minutes later, and spawns a thread to do its networking. If its process is killed while doing that check, the service will not be restarted until the alarm goes off.
`Int`	`START_REDELIVER_INTENT` Constant to return from `onStartCommand`: if this service's process is killed while it is started (after returning from `onStartCommand`), then it will be scheduled for a restart and the last delivered Intent re-delivered to it again via `onStartCommand`. This Intent will remain scheduled for redelivery until the service calls `stopSelf(int)` with the start ID provided to `onStartCommand`. The service will not receive a `onStartCommand(android.content.Intent,int,int)` call with a null Intent because it will only be restarted if it is not finished processing all Intents sent to it (and any such pending events will be delivered at the point of restart).
`Int`	`START_STICKY` Constant to return from `onStartCommand`: if this service's process is killed while it is started (after returning from `onStartCommand`), then leave it in the started state but don't retain this delivered intent. Later the system will try to re-create the service. Because it is in the started state, it will guarantee to call `onStartCommand` after creating the new service instance; if there are not any pending start commands to be delivered to the service, it will be called with a null intent object, so you must take care to check for this. This mode makes sense for things that will be explicitly started and stopped to run for arbitrary periods of time, such as a service performing background music playback. Since Android version `Build.VERSION_CODES#S`, apps targeting `Build.VERSION_CODES#S` or above are disallowed to start a foreground service from the background, but the restriction doesn't impact restarts of a sticky foreground service. However, when apps start a sticky foreground service from the background, the same restriction still applies.
`Int`	`START_STICKY_COMPATIBILITY` Constant to return from `onStartCommand`: compatibility version of `START_STICKY` that does not guarantee that `onStartCommand` will be called again after being killed.
`Int`	`STOP_FOREGROUND_DETACH` Selector for `stopForeground(int)`: if set, the notification previously supplied to #startForeground will be detached from the service's lifecycle. The notification will remain shown even after the service is stopped and destroyed.
`Int`	`STOP_FOREGROUND_LEGACY` Selector for `stopForeground(int)`: equivalent to passing `false` to the legacy API `stopForeground(boolean)`.
`Int`	`STOP_FOREGROUND_REMOVE` Selector for `stopForeground(int)`: if supplied, the notification previously supplied to #startForeground will be cancelled and removed from display.

From class ComponentCallbacks2

`Int`	`TRIM_MEMORY_BACKGROUND` Level for `onTrimMemory(int)`: the process has gone on to the LRU list. This is a good opportunity to clean up resources that can efficiently and quickly be re-built if the user returns to the app.
`Int`	`TRIM_MEMORY_COMPLETE` Level for `onTrimMemory(int)`: the process is nearing the end of the background LRU list, and if more memory isn't found soon it will be killed.
`Int`	`TRIM_MEMORY_MODERATE` Level for `onTrimMemory(int)`: the process is around the middle of the background LRU list; freeing memory can help the system keep other processes running later in the list for better overall performance.
`Int`	`TRIM_MEMORY_RUNNING_CRITICAL` Level for `onTrimMemory(int)`: the process is not an expendable background process, but the device is running extremely low on memory and is about to not be able to keep any background processes running. Your running process should free up as many non-critical resources as it can to allow that memory to be used elsewhere. The next thing that will happen after this is `onLowMemory()` called to report that nothing at all can be kept in the background, a situation that can start to notably impact the user.
`Int`	`TRIM_MEMORY_RUNNING_LOW` Level for `onTrimMemory(int)`: the process is not an expendable background process, but the device is running low on memory. Your running process should free up unneeded resources to allow that memory to be used elsewhere.
`Int`	`TRIM_MEMORY_RUNNING_MODERATE` Level for `onTrimMemory(int)`: the process is not an expendable background process, but the device is running moderately low on memory. Your running process may want to release some unneeded resources for use elsewhere.
`Int`	`TRIM_MEMORY_UI_HIDDEN` Level for `onTrimMemory(int)`: the process had been showing a user interface, and is no longer doing so. Large allocations with the UI should be released at this point to allow memory to be better managed.

Public constructors
`CallScreeningService()`

Public methods
open IBinder?	`onBind(intent: Intent!)`
abstract Unit	`onScreenCall(callDetails: Call.Details)` Called when a new incoming or outgoing call is added.
open Boolean	`onUnbind(intent: Intent!)`
Unit	`respondToCall(callDetails: Call.Details, response: CallScreeningService.CallResponse)` Responds to the given incoming call, either allowing it, silencing it or disallowing it.

Inherited functions

From class Service

`Unit`	`attachBaseContext(newBase: Context!)`
`Unit`	`dump(fd: FileDescriptor!, writer: PrintWriter!, args: Array<String!>!)` Print the Service's state into the given stream. This gets invoked if you run "adb shell dumpsys activity service <yourservicename>" (note that for this command to work, the service must be running, and you must specify a fully-qualified service name). This is distinct from "dumpsys <servicename>", which only works for named system services and which invokes the `IBinder#dump` method on the `IBinder` interface registered with ServiceManager.
`Application!`	`getApplication()` Return the application that owns this service.
`Int`	`getForegroundServiceType()` If the service has become a foreground service by calling `startForeground(int,android.app.Notification)` or `startForeground(int,android.app.Notification,int)`, `getForegroundServiceType()` returns the current foreground service type. If there is no foregroundServiceType specified in manifest, `ServiceInfo#FOREGROUND_SERVICE_TYPE_NONE` is returned. If the service is not a foreground service, `ServiceInfo#FOREGROUND_SERVICE_TYPE_NONE` is returned.
`Unit`	`onConfigurationChanged(newConfig: Configuration)`
`Unit`	`onCreate()` Called by the system when the service is first created. Do not call this method directly.
`Unit`	`onDestroy()` Called by the system to notify a Service that it is no longer used and is being removed. The service should clean up any resources it holds (threads, registered receivers, etc) at this point. Upon return, there will be no more calls in to this Service object and it is effectively dead. Do not call this method directly.
`Unit`	`onLowMemory()`
`Unit`	`onRebind(intent: Intent!)` Called when new clients have connected to the service, after it had previously been notified that all had disconnected in its `onUnbind`. This will only be called if the implementation of `onUnbind` was overridden to return true.
`Unit`	`onStart(intent: Intent!, startId: Int)`
`Int`	`onStartCommand(intent: Intent!, flags: Int, startId: Int)` Called by the system every time a client explicitly starts the service by calling `android.content.Context#startService`, providing the arguments it supplied and a unique integer token representing the start request. Do not call this method directly. For backwards compatibility, the default implementation calls `onStart` and returns either `START_STICKY` or `START_STICKY_COMPATIBILITY`. Note that the system calls this on your service's main thread. A service's main thread is the same thread where UI operations take place for Activities running in the same process. You should always avoid stalling the main thread's event loop. When doing long-running operations, network calls, or heavy disk I/O, you should kick off a new thread, or use `android.os.AsyncTask`.
`Unit`	`onTaskRemoved(rootIntent: Intent!)` This is called if the service is currently running and the user has removed a task that comes from the service's application. If you have set `ServiceInfo.FLAG_STOP_WITH_TASK` then you will not receive this callback; instead, the service will simply be stopped.
`Unit`	`onTimeout(startId: Int)` Callback called on timeout for `ServiceInfo#FOREGROUND_SERVICE_TYPE_SHORT_SERVICE`. See `ServiceInfo#FOREGROUND_SERVICE_TYPE_SHORT_SERVICE` for more details. If the foreground service of type `ServiceInfo#FOREGROUND_SERVICE_TYPE_SHORT_SERVICE` doesn't finish even after it's timed out, the app will be declared an ANR after a short grace period of several seconds. Starting from Android version `android.os.Build.VERSION_CODES#VANILLA_ICE_CREAM`, `onTimeout(int,int)` will also be called when a foreground service of type `ServiceInfo#FOREGROUND_SERVICE_TYPE_SHORT_SERVICE` times out. Developers do not need to implement both of the callbacks on `android.os.Build.VERSION_CODES#VANILLA_ICE_CREAM` and onwards. Note, even though `ServiceInfo#FOREGROUND_SERVICE_TYPE_SHORT_SERVICE` was added on Android version `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, it can be also used on on prior android versions (just like other new foreground service types can be used). However, because `android.app.Service#onTimeout(int)` did not exist on prior versions, it will never called on such versions. Because of this, developers must make sure to stop the foreground service even if `android.app.Service#onTimeout(int)` is not called on such versions.
`Unit`	`onTimeout(startId: Int, fgsType: Int)` Callback called when a particular foreground service type has timed out. This callback is meant to give the app a small grace period of a few seconds to finish the foreground service of the associated type - if it fails to do so, the app will crash. The foreground service of the associated type can be stopped within the time limit by `android.app.Service#stopSelf()`, `android.content.Context#stopService(android.content.Intent)` or their overloads. `android.app.Service#stopForeground(int)` can be used as well, which demotes the service to a "background" service, which will soon be stopped by the system. The specific time limit for each type (if one exists) is mentioned in the documentation for that foreground service type. See `dataSync` for example. Note: time limits are restricted to a rolling 24-hour window - for example, if a foreground service type has a time limit of 6 hours, that time counter begins as soon as the foreground service starts. This time limit will only be reset once every 24 hours or if the app comes into the foreground state.
`Unit`	`onTrimMemory(level: Int)`
`Unit`	`startForeground(id: Int, notification: Notification!)` If your service is started (running through `Context#startService(Intent)`), then also make this service run in the foreground, supplying the ongoing notification to be shown to the user while in this state. By default started services are background, meaning that their process won't be given foreground CPU scheduling (unless something else in that process is foreground) and, if the system needs to kill them to reclaim more memory (such as to display a large page in a web browser), they can be killed without too much harm. You use #startForeground if killing your service would be disruptive to the user, such as if your service is performing background music playback, so the user would notice if their music stopped playing. Note that calling this method does not put the service in the started state itself, even though the name sounds like it. You must always call `startService(android.content.Intent)` first to tell the system it should keep the service running, and then use this method to tell it to keep it running harder. Apps targeting API `android.os.Build.VERSION_CODES#P` or later must request the permission `android.Manifest.permission#FOREGROUND_SERVICE` in order to use this API. Apps built with SDK version `android.os.Build.VERSION_CODES#Q` or later can specify the foreground service types using attribute `android.R.attr#foregroundServiceType` in service element of manifest file. The value of attribute `android.R.attr#foregroundServiceType` can be multiple flags ORed together. Note: Beginning with SDK Version `android.os.Build.VERSION_CODES#S`, apps targeting SDK Version `android.os.Build.VERSION_CODES#S` or higher are not allowed to start foreground services from the background. See Behavior changes: Apps targeting Android 12 for more details. Note: Beginning with SDK Version `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, apps targeting SDK Version `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE` or higher are not allowed to start foreground services without specifying a valid foreground service type in the manifest attribute `android.R.attr#foregroundServiceType`. See Behavior changes: Apps targeting Android 14 for more details.
`Unit`	`startForeground(id: Int, notification: Notification, foregroundServiceType: Int)` An overloaded version of `startForeground(int,android.app.Notification)` with additional foregroundServiceType parameter. Apps built with SDK version `android.os.Build.VERSION_CODES#Q` or later can specify the foreground service types using attribute `android.R.attr#foregroundServiceType` in service element of manifest file. The value of attribute `android.R.attr#foregroundServiceType` can be multiple flags ORed together. The foregroundServiceType parameter must be a subset flags of what is specified in manifest attribute `android.R.attr#foregroundServiceType`, if not, an IllegalArgumentException is thrown. Specify foregroundServiceType parameter as `android.content.pm.ServiceInfo#FOREGROUND_SERVICE_TYPE_MANIFEST` to use all flags that is specified in manifest attribute foregroundServiceType. Note: Beginning with SDK Version `android.os.Build.VERSION_CODES#S`, apps targeting SDK Version `android.os.Build.VERSION_CODES#S` or higher are not allowed to start foreground services from the background. See Behavior changes: Apps targeting Android 12 for more details. Note: Beginning with SDK Version `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, apps targeting SDK Version `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE` or higher are not allowed to start foreground services without specifying a valid foreground service type in the manifest attribute `android.R.attr#foregroundServiceType`, and the parameter `foregroundServiceType` here must not be the `ServiceInfo#FOREGROUND_SERVICE_TYPE_NONE`. See Behavior changes: Apps targeting Android 14 for more details.
`Unit`	`stopForeground(removeNotification: Boolean)` Legacy version of `stopForeground(int)`.
`Unit`	`stopForeground(notificationBehavior: Int)` Remove this service from foreground state, allowing it to be killed if more memory is needed. This does not stop the service from running (for that you use `stopSelf()` or related methods), just takes it out of the foreground state. If `STOP_FOREGROUND_REMOVE` is supplied, the service's associated notification will be cancelled immediately. If `STOP_FOREGROUND_DETACH` is supplied, the service's association with the notification will be severed. If the notification had not yet been shown, due to foreground-service notification deferral policy, it is immediately posted when `stopForeground(STOP_FOREGROUND_DETACH)` is called. In all cases, the notification remains shown even after this service is stopped fully and destroyed. If `zero` is passed as the argument, the result will be the legacy behavior as defined prior to Android L: the notification will remain posted until the service is fully stopped, at which time it will automatically be cancelled.
`Unit`	`stopSelf()` Stop the service, if it was previously started. This is the same as calling `android.content.Context#stopService` for this particular service.
`Unit`	`stopSelf(startId: Int)` Old version of `stopSelfResult` that doesn't return a result.
`Boolean`	`stopSelfResult(startId: Int)` Stop the service if the most recent time it was started was startId. This is the same as calling `android.content.Context#stopService` for this particular service but allows you to safely avoid stopping if there is a start request from a client that you haven't yet seen in `onStart`. Be careful about ordering of your calls to this function.. If you call this function with the most-recently received ID before you have called it for previously received IDs, the service will be immediately stopped anyway. If you may end up processing IDs out of order (such as by dispatching them on separate threads), then you are responsible for stopping them in the same order you received them.

From class ContextWrapper

`Boolean`	`bindIsolatedService(service: Intent, flags: Int, instanceName: String, executor: Executor, conn: ServiceConnection)`
`Boolean`	`bindService(service: Intent, conn: ServiceConnection, flags: Int)`
`Boolean`	`bindService(service: Intent, conn: ServiceConnection, flags: Context.BindServiceFlags)` See `bindService(android.content.Intent,android.content.ServiceConnection,int)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`Boolean`	`bindService(service: Intent, flags: Int, executor: Executor, conn: ServiceConnection)`
`Boolean`	`bindService(service: Intent, flags: Context.BindServiceFlags, executor: Executor, conn: ServiceConnection)` See `bindService(android.content.Intent,int,java.util.concurrent.Executor,android.content.ServiceConnection)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`Int`	`checkCallingOrSelfPermission(permission: String)`
`Int`	`checkCallingOrSelfUriPermission(uri: Uri!, modeFlags: Int)`
`IntArray`	`checkCallingOrSelfUriPermissions(uris: MutableList<Uri!>, modeFlags: Int)` Determine whether the calling process of an IPC or you has been granted permission to access a list of URIs. This is the same as `checkCallingUriPermission`, except it grants your own permissions if you are not currently processing an IPC. Use with care!
`Int`	`checkCallingPermission(permission: String)`
`Int`	`checkCallingUriPermission(uri: Uri!, modeFlags: Int)`
`IntArray`	`checkCallingUriPermissions(uris: MutableList<Uri!>, modeFlags: Int)` Determine whether the calling process and uid has been granted permission to access a list of URIs. This is basically the same as calling `checkUriPermissions(java.util.List,int,int,int)` with the pid and uid returned by `android.os.Binder#getCallingPid` and `android.os.Binder#getCallingUid`. One important difference is that if you are not currently processing an IPC, this function will always fail.
`Int`	`checkContentUriPermissionFull(uri: Uri, pid: Int, uid: Int, modeFlags: Int)` Determine whether a particular process and uid has been granted permission to access a specific content URI. Unlike `checkUriPermission(android.net.Uri,int,int,int)`, this method checks for general access to the URI's content provider, as well as explicitly granted permissions. Note, this check will throw an `IllegalArgumentException` for non-content URIs.
`Int`	`checkPermission(permission: String, pid: Int, uid: Int)`
`Int`	`checkSelfPermission(permission: String)`
`Int`	`checkUriPermission(uri: Uri!, pid: Int, uid: Int, modeFlags: Int)`
`Int`	`checkUriPermission(uri: Uri?, readPermission: String?, writePermission: String?, pid: Int, uid: Int, modeFlags: Int)` Check both a Uri and normal permission. This allows you to perform both `checkPermission` and #checkUriPermission in one call.
`IntArray`	`checkUriPermissions(uris: MutableList<Uri!>, pid: Int, uid: Int, modeFlags: Int)` Determine whether a particular process and uid has been granted permission to access a list of URIs. This only checks for permissions that have been explicitly granted -- if the given process/uid has more general access to the URI's content provider then this check will always fail. Note: On SDK Version `android.os.Build.VERSION_CODES#S`, calling this method from a secondary-user's context will incorrectly return `PackageManager#PERMISSION_DENIED` for all {code uris}.
`Unit`	`clearWallpaper()`
`Context`	`createAttributionContext(attributionTag: String?)` Return a new Context object for the current Context but attribute to a different tag. In complex apps attribution tagging can be used to distinguish between separate logical parts.
`Context!`	`createConfigurationContext(overrideConfiguration: Configuration)`
`Context`	`createContext(contextParams: ContextParams)` Creates a context with specific properties and behaviors.
`Context`	`createDeviceContext(deviceId: Int)` Returns a new `Context` object from the current context but with device association given by the `deviceId`. Each call to this method returns a new instance of a context object. Context objects are not shared; however, common state (such as the `ClassLoader` and other resources for the same configuration) can be shared, so the `Context` itself is lightweight. Applications that run on virtual devices may use this method to access the default device capabilities and functionality (by passing `Context#DEVICE_ID_DEFAULT`. Similarly, applications running on the default device may access the functionality of virtual devices. Note that the newly created instance will be associated with the same display as the parent Context, regardless of the device ID passed here.
`Context!`	`createDeviceProtectedStorageContext()`
`Context!`	`createDisplayContext(display: Display)`
`Context!`	`createPackageContext(packageName: String!, flags: Int)`
`Context`	`createWindowContext(type: Int, options: Bundle?)` Creates a Context for a non-activity window. A window context is a context that can be used to add non-activity windows, such as `android.view.WindowManager.LayoutParams#TYPE_APPLICATION_OVERLAY`. A window context must be created from a context that has an associated `Display`, such as `Activity` or a context created with `createDisplayContext(android.view.Display)`. The window context is created with the appropriate `Configuration` for the area of the display that the windows created with it can occupy; it must be used when `inflating` views, such that they can be inflated with proper `Resources`. Below is a sample code to add an application overlay window on the primary display: ... final DisplayManager dm = anyContext.getSystemService(DisplayManager.class); final Display primaryDisplay = dm.getDisplay(DEFAULT_DISPLAY); final Context windowContext = anyContext.createDisplayContext(primaryDisplay) .createWindowContext(TYPE_APPLICATION_OVERLAY, null); final View overlayView = Inflater.from(windowContext).inflate(someLayoutXml, null); // WindowManager.LayoutParams initialization ... // The types used in addView and createWindowContext must match. mParams.type = TYPE_APPLICATION_OVERLAY; ... windowContext.getSystemService(WindowManager.class).addView(overlayView, mParams); This context's configuration and resources are adjusted to an area of the display where the windows with provided type will be added. Note that all windows associated with the same context will have an affinity and can only be moved together between different displays or areas on a display. If there is a need to add different window types, or non-associated windows, separate Contexts should be used. Creating a window context is an expensive operation. Misuse of this API may lead to a huge performance drop. The best practice is to use the same window context when possible. An approach is to create one window context with specific window type and display and use it everywhere it's needed. After `Build.VERSION_CODES#S`, window context provides the capability to receive configuration changes for existing token by overriding the `token` of the `android.view.WindowManager.LayoutParams` passed in `WindowManager#addView(View, LayoutParams)`. This is useful when an application needs to attach its window to an existing activity for window token sharing use-case. Note that the window context in `Build.VERSION_CODES#R` didn't have this capability. This is a no-op for the window context in `Build.VERSION_CODES#R`. Below is sample code to attach an existing token to a window context: final DisplayManager dm = anyContext.getSystemService(DisplayManager.class); final Display primaryDisplay = dm.getDisplay(DEFAULT_DISPLAY); final Context windowContext = anyContext.createWindowContext(primaryDisplay, TYPE_APPLICATION, null); // Get an existing token. final IBinder existingToken = activity.getWindow().getAttributes().token; // The types used in addView() and createWindowContext() must match. final WindowManager.LayoutParams params = new WindowManager.LayoutParams(TYPE_APPLICATION); params.token = existingToken; // After WindowManager#addView(), the server side will extract the provided token from // LayoutParams#token (existingToken in the sample code), and switch to propagate // configuration changes from the node associated with the provided token. windowContext.getSystemService(WindowManager.class).addView(overlayView, mParams); After `Build.VERSION_CODES#S`, window context provides the capability to listen to its `Configuration` changes by calling `registerComponentCallbacks(android.content.ComponentCallbacks)`, while other kinds of `Context` will register the `ComponentCallbacks` to `its`. Note that window context only propagate `ComponentCallbacks#onConfigurationChanged(Configuration)` callback. `ComponentCallbacks#onLowMemory()` or other callbacks in `ComponentCallbacks2` won't be invoked. Note that using `android.app.Application` or `android.app.Service` context for UI-related queries may result in layout or continuity issues on devices with variable screen sizes (e.g. foldables) or in multi-window modes, since these non-UI contexts may not reflect the `Configuration` changes for the visual container.
`Context`	`createWindowContext(display: Display, type: Int, options: Bundle?)` Creates a `Context` for a non-`activity` window on the given `Display`. Similar to `createWindowContext(int,android.os.Bundle)`, but the `display` is passed in, instead of implicitly using the `original Context's Display`.
`Array<String!>!`	`databaseList()`
`Boolean`	`deleteDatabase(name: String!)`
`Boolean`	`deleteFile(name: String!)`
`Boolean`	`deleteSharedPreferences(name: String!)`
`Unit`	`enforceCallingOrSelfPermission(permission: String, message: String?)` If neither you nor the calling process of an IPC you are handling has been granted a particular permission, throw a `SecurityException`. This is the same as `enforceCallingPermission`, except it grants your own permissions if you are not currently processing an IPC. Use with care!
`Unit`	`enforceCallingOrSelfUriPermission(uri: Uri!, modeFlags: Int, message: String!)`
`Unit`	`enforceCallingPermission(permission: String, message: String?)` If the calling process of an IPC you are handling has not been granted a particular permission, throw a `SecurityException`. This is basically the same as calling `enforcePermission(java.lang.String,int,int,java.lang.String)` with the pid and uid returned by `android.os.Binder#getCallingPid` and `android.os.Binder#getCallingUid`. One important difference is that if you are not currently processing an IPC, this function will always throw the SecurityException. This is done to protect against accidentally leaking permissions; you can use `enforceCallingOrSelfPermission` to avoid this protection.
`Unit`	`enforceCallingUriPermission(uri: Uri!, modeFlags: Int, message: String!)`
`Unit`	`enforcePermission(permission: String, pid: Int, uid: Int, message: String?)` If the given permission is not allowed for a particular process and user ID running in the system, throw a `SecurityException`.
`Unit`	`enforceUriPermission(uri: Uri!, pid: Int, uid: Int, modeFlags: Int, message: String!)`
`Unit`	`enforceUriPermission(uri: Uri?, readPermission: String?, writePermission: String?, pid: Int, uid: Int, modeFlags: Int, message: String?)` Enforce both a Uri and normal permission. This allows you to perform both `enforcePermission` and #enforceUriPermission in one call.
`Array<String!>!`	`fileList()`
`Context!`	`getApplicationContext()`
`ApplicationInfo!`	`getApplicationInfo()`
`AssetManager!`	`getAssets()`
`AttributionSource`	`getAttributionSource()`
`Context!`	`getBaseContext()`
`File!`	`getCacheDir()`
`ClassLoader!`	`getClassLoader()`
`File!`	`getCodeCacheDir()`
`ContentResolver!`	`getContentResolver()`
`File!`	`getDataDir()`
`File!`	`getDatabasePath(name: String!)`
`Int`	`getDeviceId()`
`File!`	`getDir(name: String!, mode: Int)`
`Display!`	`getDisplay()` Get the display this context is associated with. Applications should use this method with `android.app.Activity` or a context associated with a `Display` via `createDisplayContext(android.view.Display)` to get a display object associated with a Context, or `android.hardware.display.DisplayManager#getDisplay` to get a display object by id.
`File?`	`getExternalCacheDir()` Returns absolute path to application-specific directory on the primary shared/external storage device where the application can place cache files it owns. These files are internal to the application, and not typically visible to the user as media. This is like `getCacheDir()` in that these files will be deleted when the application is uninstalled, however there are some important differences: The platform does not always monitor the space available in shared storage, and thus may not automatically delete these files. Apps should always manage the maximum space used in this location. Currently the only time files here will be deleted by the platform is when running on `android.os.Build.VERSION_CODES#JELLY_BEAN_MR1` or later and `Environment#isExternalStorageEmulated(File)` returns true. Shared storage may not always be available, since removable media can be ejected by the user. Media state can be checked using `Environment#getExternalStorageState(File)`. There is no security enforced with these files. For example, any application holding `android.Manifest.permission#WRITE_EXTERNAL_STORAGE` can write to these files. If a shared storage device is emulated (as determined by `Environment#isExternalStorageEmulated(File)`), its contents are backed by a private user data partition, which means there is little benefit to storing data here instead of the private directory returned by `getCacheDir()`. Starting in `android.os.Build.VERSION_CODES#KITKAT`, no permissions are required to read or write to the returned path; it's always accessible to the calling app. This only applies to paths generated for package name of the calling application. To access paths belonging to other packages, `android.Manifest.permission#WRITE_EXTERNAL_STORAGE` and/or `android.Manifest.permission#READ_EXTERNAL_STORAGE` are required. On devices with multiple users (as described by `UserManager`), each user has their own isolated shared storage. Applications only have access to the shared storage for the user they're running as. The returned path may change over time if different shared storage media is inserted, so only relative paths should be persisted.
`Array<File!>!`	`getExternalCacheDirs()`
`File?`	`getExternalFilesDir(type: String?)` Returns the absolute path to the directory on the primary shared/external storage device where the application can place persistent files it owns. These files are internal to the applications, and not typically visible to the user as media. This is like `getFilesDir()` in that these files will be deleted when the application is uninstalled, however there are some important differences: Shared storage may not always be available, since removable media can be ejected by the user. Media state can be checked using `Environment#getExternalStorageState(File)`. There is no security enforced with these files. For example, any application holding `android.Manifest.permission#WRITE_EXTERNAL_STORAGE` can write to these files. If a shared storage device is emulated (as determined by `Environment#isExternalStorageEmulated(File)`), its contents are backed by a private user data partition, which means there is little benefit to storing data here instead of the private directories returned by `getFilesDir()`, etc. Starting in `android.os.Build.VERSION_CODES#KITKAT`, no permissions are required to read or write to the returned path; it's always accessible to the calling app. This only applies to paths generated for package name of the calling application. To access paths belonging to other packages, `android.Manifest.permission#WRITE_EXTERNAL_STORAGE` and/or `android.Manifest.permission#READ_EXTERNAL_STORAGE` are required. On devices with multiple users (as described by `UserManager`), each user has their own isolated shared storage. Applications only have access to the shared storage for the user they're running as. The returned path may change over time if different shared storage media is inserted, so only relative paths should be persisted. Here is an example of typical code to manipulate a file in an application's shared storage: If you supply a non-null type to this function, the returned file will be a path to a sub-directory of the given type. Though these files are not automatically scanned by the media scanner, you can explicitly add them to the media database with `MediaScannerConnection.scanFile`. Note that this is not the same as `Environment.getExternalStoragePublicDirectory()`, which provides directories of media shared by all applications. The directories returned here are owned by the application, and their contents will be removed when the application is uninstalled. Unlike `Environment.getExternalStoragePublicDirectory()`, the directory returned here will be automatically created for you. Here is an example of typical code to manipulate a picture in an application's shared storage and add it to the media database:
`Array<File!>!`	`getExternalFilesDirs(type: String!)`
`Array<File!>!`	`getExternalMediaDirs()`
`File!`	`getFileStreamPath(name: String!)`
`File!`	`getFilesDir()`
`Executor!`	`getMainExecutor()`
`Looper!`	`getMainLooper()`
`File!`	`getNoBackupFilesDir()`
`File!`	`getObbDir()`
`Array<File!>!`	`getObbDirs()`
`String!`	`getPackageCodePath()`
`PackageManager!`	`getPackageManager()`
`String!`	`getPackageName()`
`String!`	`getPackageResourcePath()`
`ContextParams?`	`getParams()` Return the set of parameters which this Context was created with, if it was created via `createContext(android.content.ContextParams)`.
`Resources!`	`getResources()`
`SharedPreferences!`	`getSharedPreferences(name: String!, mode: Int)`
`Any!`	`getSystemService(name: String)`
`String?`	`getSystemServiceName(serviceClass: Class<*>)`
`Resources.Theme!`	`getTheme()`
`Drawable!`	`getWallpaper()`
`Int`	`getWallpaperDesiredMinimumHeight()`
`Int`	`getWallpaperDesiredMinimumWidth()`
`Unit`	`grantUriPermission(toPackage: String!, uri: Uri!, modeFlags: Int)`
`Boolean`	`isDeviceProtectedStorage()`
`Boolean`	`isRestricted()`
`Boolean`	`moveDatabaseFrom(sourceContext: Context!, name: String!)`
`Boolean`	`moveSharedPreferencesFrom(sourceContext: Context!, name: String!)`
`FileInputStream!`	`openFileInput(name: String!)`
`FileOutputStream!`	`openFileOutput(name: String!, mode: Int)`
`SQLiteDatabase!`	`openOrCreateDatabase(name: String!, mode: Int, factory: SQLiteDatabase.CursorFactory!)`
`SQLiteDatabase!`	`openOrCreateDatabase(name: String!, mode: Int, factory: SQLiteDatabase.CursorFactory!, errorHandler: DatabaseErrorHandler?)` Open a new private SQLiteDatabase associated with this Context's application package. Creates the database file if it doesn't exist. Accepts input param: a concrete instance of `DatabaseErrorHandler` to be used to handle corruption when sqlite reports database corruption.
`Drawable!`	`peekWallpaper()`
`Unit`	`registerComponentCallbacks(callback: ComponentCallbacks!)` Add a new `ComponentCallbacks` to the base application of the Context, which will be called at the same times as the ComponentCallbacks methods of activities and other components are called. Note that you must be sure to use `unregisterComponentCallbacks` when appropriate in the future; this will not be removed for you. After `Build.VERSION_CODES#TIRAMISU`, the `ComponentCallbacks` will be registered to `the base Context`, and can be only used after `attachBaseContext(android.content.Context)`. Users can still call to `getApplicationContext().registerComponentCallbacks(ComponentCallbacks)` to add `ComponentCallbacks` to the base application.
`Unit`	`registerDeviceIdChangeListener(executor: Executor, listener: IntConsumer)` Adds a new device ID changed listener to the `Context`, which will be called when the device association is changed by the system. The callback can be called when an app is moved to a different device and the `Context` is not explicitly associated with a specific device. When an application receives a device id update callback, this Context is guaranteed to also have an updated display ID(if any) and `Configuration`.
`Intent?`	`registerReceiver(receiver: BroadcastReceiver?, filter: IntentFilter!)` Register a BroadcastReceiver to be run in the main activity thread. The receiver will be called with any broadcast Intent that matches filter, in the main application thread. The system may broadcast Intents that are "sticky" -- these stay around after the broadcast has finished, to be sent to any later registrations. If your IntentFilter matches one of these sticky Intents, that Intent will be returned by this function and sent to your receiver as if it had just been broadcast. There may be multiple sticky Intents that match filter, in which case each of these will be sent to receiver. In this case, only one of these can be returned directly by the function; which of these that is returned is arbitrarily decided by the system. If you know the Intent your are registering for is sticky, you can supply null for your receiver. In this case, no receiver is registered -- the function simply returns the sticky Intent that matches filter. In the case of multiple matches, the same rules as described above apply. See `BroadcastReceiver` for more information on Intent broadcasts. As of `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast. As of `android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH`, receivers registered with this method will correctly respect the `Intent#setPackage(String)` specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security. For apps targeting `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, either `RECEIVER_EXPORTED` or `RECEIVER_NOT_EXPORTED` must be specified if the receiver is not being registered for system broadcasts or a `SecurityException` will be thrown. See `registerReceiver(android.content.BroadcastReceiver,android.content.IntentFilter,int)` to register a receiver with flags. Note: this method cannot be called from a `BroadcastReceiver` component; that is, from a BroadcastReceiver that is declared in an application's manifest. It is okay, however, to call this method from another BroadcastReceiver that has itself been registered at run time with #registerReceiver, since the lifetime of such a registered BroadcastReceiver is tied to the object that registered it.
`Intent?`	`registerReceiver(receiver: BroadcastReceiver?, filter: IntentFilter!, flags: Int)` Register to receive intent broadcasts, with the receiver optionally being exposed to Instant Apps. See `registerReceiver(android.content.BroadcastReceiver,android.content.IntentFilter)` for more information. By default Instant Apps cannot interact with receivers in other applications, this allows you to expose a receiver that Instant Apps can interact with. See `BroadcastReceiver` for more information on Intent broadcasts. As of `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast. As of `android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH`, receivers registered with this method will correctly respect the `Intent#setPackage(String)` specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security.
`Intent?`	`registerReceiver(receiver: BroadcastReceiver?, filter: IntentFilter!, broadcastPermission: String?, scheduler: Handler?)` Register to receive intent broadcasts, to run in the context of scheduler. See `registerReceiver(android.content.BroadcastReceiver,android.content.IntentFilter)` for more information. This allows you to enforce permissions on who can broadcast intents to your receiver, or have the receiver run in a different thread than the main application thread. See `BroadcastReceiver` for more information on Intent broadcasts. As of `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast. As of `android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH`, receivers registered with this method will correctly respect the `Intent#setPackage(String)` specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security. For apps targeting `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, either `RECEIVER_EXPORTED` or `RECEIVER_NOT_EXPORTED` must be specified if the receiver is not being registered for system broadcasts or a `SecurityException` will be thrown. See `registerReceiver(android.content.BroadcastReceiver,android.content.IntentFilter,java.lang.String,android.os.Handler,int)` to register a receiver with flags.
`Intent?`	`registerReceiver(receiver: BroadcastReceiver?, filter: IntentFilter!, broadcastPermission: String?, scheduler: Handler?, flags: Int)` Register to receive intent broadcasts, to run in the context of scheduler. See `registerReceiver(android.content.BroadcastReceiver,android.content.IntentFilter,int)` and `registerReceiver(android.content.BroadcastReceiver,android.content.IntentFilter,java.lang.String,android.os.Handler)` for more information. See `BroadcastReceiver` for more information on Intent broadcasts. As of `android.os.Build.VERSION_CODES#UPSIDE_DOWN_CAKE`, the system can place context-registered broadcasts in a queue while the app is in the cached state. When the app leaves the cached state, such as returning to the foreground, the system delivers any queued broadcasts. Multiple instances of certain broadcasts might be merged into one broadcast. As of `android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH`, receivers registered with this method will correctly respect the `Intent#setPackage(String)` specified for an Intent being broadcast. Prior to that, it would be ignored and delivered to all matching registered receivers. Be careful if using this for security.
`Unit`	`removeStickyBroadcast(intent: Intent!)`
`Unit`	`removeStickyBroadcastAsUser(intent: Intent!, user: UserHandle!)`
`Unit`	`revokeSelfPermissionsOnKill(permissions: MutableCollection<String!>)` Triggers the revocation of one or more permissions for the calling package. A package is only able to revoke runtime permissions. If a permission is not currently granted, it is ignored and will not get revoked (even if later granted by the user). Ultimately, you should never make assumptions about a permission status as users may grant or revoke them at any time. Background permissions which have no corresponding foreground permission still granted once the revocation is effective will also be revoked. The revocation happens asynchronously and kills all processes running in the calling UID. It will be triggered once it is safe to do so. In particular, it will not be triggered as long as the package remains in the foreground, or has any active manifest components (e.g. when another app is accessing a content provider in the package). If you want to revoke the permissions right away, you could call `System.exit()` in `Handler.postDelayed` with a delay to allow completion of async IPC, But `System.exit()` could affect other apps that are accessing your app at the moment. For example, apps accessing a content provider in your app will all crash. Note that the settings UI shows a permission group as granted as long as at least one permission in the group is granted. If you want the user to observe the revocation in the settings, you should revoke every permission in the target group. To learn the current list of permissions in a group, you may use `PackageManager#getGroupOfPlatformPermission(String, Executor, Consumer)` and `PackageManager#getPlatformPermissionsForGroup(String, Executor, Consumer)`. This list of permissions may evolve over time, so it is recommended to check whether it contains any permission you wish to retain before trying to revoke an entire group.
`Unit`	`revokeUriPermission(uri: Uri!, modeFlags: Int)`
`Unit`	`revokeUriPermission(targetPackage: String!, uri: Uri!, modeFlags: Int)`
`Unit`	`sendBroadcast(intent: Intent!)`
`Unit`	`sendBroadcast(intent: Intent!, receiverPermission: String?)` Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. No results are propagated from receivers and receivers can not abort the broadcast. If you want to allow receivers to propagate results or abort the broadcast, you must send an ordered broadcast using `sendOrderedBroadcast(android.content.Intent,java.lang.String)`. See `BroadcastReceiver` for more information on Intent broadcasts.
`Unit`	`sendBroadcast(intent: Intent, receiverPermission: String?, options: Bundle?)` Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. No results are propagated from receivers and receivers can not abort the broadcast. If you want to allow receivers to propagate results or abort the broadcast, you must send an ordered broadcast using `sendOrderedBroadcast(android.content.Intent,java.lang.String)`. See `BroadcastReceiver` for more information on Intent broadcasts.
`Unit`	`sendBroadcastAsUser(intent: Intent!, user: UserHandle!)`
`Unit`	`sendBroadcastAsUser(intent: Intent!, user: UserHandle!, receiverPermission: String?)`
`Unit`	`sendOrderedBroadcast(intent: Intent!, receiverPermission: String?)` Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. See `BroadcastReceiver` for more information on Intent broadcasts.
`Unit`	`sendOrderedBroadcast(intent: Intent, receiverPermission: String?, options: Bundle?)` Broadcast the given intent to all interested BroadcastReceivers, delivering them one at a time to allow more preferred receivers to consume the broadcast before it is delivered to less preferred receivers. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. See `BroadcastReceiver` for more information on Intent broadcasts.
`Unit`	`sendOrderedBroadcast(intent: Intent, receiverPermission: String?, resultReceiver: BroadcastReceiver?, scheduler: Handler?, initialCode: Int, initialData: String?, initialExtras: Bundle?)` Version of `sendBroadcast(android.content.Intent)` that allows you to receive data back from the broadcast. This is accomplished by supplying your own BroadcastReceiver when calling, which will be treated as a final receiver at the end of the broadcast -- its `BroadcastReceiver#onReceive` method will be called with the result values collected from the other receivers. The broadcast will be serialized in the same way as calling `sendOrderedBroadcast(android.content.Intent,java.lang.String)`. Like `sendBroadcast(android.content.Intent)`, this method is asynchronous; it will return before resultReceiver.onReceive() is called. See `BroadcastReceiver` for more information on Intent broadcasts.
`Unit`	`sendOrderedBroadcast(intent: Intent, receiverPermission: String?, options: Bundle?, resultReceiver: BroadcastReceiver?, scheduler: Handler?, initialCode: Int, initialData: String?, initialExtras: Bundle?)` Version of `sendBroadcast(android.content.Intent)` that allows you to receive data back from the broadcast. This is accomplished by supplying your own BroadcastReceiver when calling, which will be treated as a final receiver at the end of the broadcast -- its `BroadcastReceiver#onReceive` method will be called with the result values collected from the other receivers. The broadcast will be serialized in the same way as calling `sendOrderedBroadcast(android.content.Intent,java.lang.String)`. Like `sendBroadcast(android.content.Intent)`, this method is asynchronous; it will return before resultReceiver.onReceive() is called. See `BroadcastReceiver` for more information on Intent broadcasts.
`Unit`	`sendOrderedBroadcast(intent: Intent, receiverPermission: String?, receiverAppOp: String?, resultReceiver: BroadcastReceiver?, scheduler: Handler?, initialCode: Int, initialData: String?, initialExtras: Bundle?)` Version of `sendOrderedBroadcast(android.content.Intent,java.lang.String,android.content.BroadcastReceiver,android.os.Handler,int,java.lang.String,android.os.Bundle)` that allows you to specify the App Op to enforce restrictions on which receivers the broadcast will be sent to. See `BroadcastReceiver` for more information on Intent broadcasts.
`Unit`	`sendOrderedBroadcast(intent: Intent, initialCode: Int, receiverPermission: String?, receiverAppOp: String?, resultReceiver: BroadcastReceiver?, scheduler: Handler?, initialData: String?, initialExtras: Bundle?, options: Bundle?)`
`Unit`	`sendOrderedBroadcastAsUser(intent: Intent!, user: UserHandle!, receiverPermission: String?, resultReceiver: BroadcastReceiver?, scheduler: Handler?, initialCode: Int, initialData: String?, initialExtras: Bundle?)` Version of `sendOrderedBroadcast(android.content.Intent,java.lang.String,android.content.BroadcastReceiver,android.os.Handler,int,java.lang.String,android.os.Bundle)` that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image. See `BroadcastReceiver` for more information on Intent broadcasts. Requires android.Manifest.permission.INTERACT_ACROSS_USERS
`Unit`	`sendStickyBroadcast(intent: Intent!)`
`Unit`	`sendStickyBroadcast(intent: Intent, options: Bundle?)` Perform a `sendBroadcast(android.content.Intent)` that is "sticky," meaning the Intent you are sending stays around after the broadcast is complete, so that others can quickly retrieve that data through the return value of `registerReceiver(android.content.BroadcastReceiver,android.content.IntentFilter)`. In all other ways, this behaves the same as `sendBroadcast(android.content.Intent)`.
`Unit`	`sendStickyBroadcastAsUser(intent: Intent!, user: UserHandle!)`
`Unit`	`sendStickyOrderedBroadcast(intent: Intent!, resultReceiver: BroadcastReceiver?, scheduler: Handler?, initialCode: Int, initialData: String?, initialExtras: Bundle?)` Version of #sendStickyBroadcast that allows you to receive data back from the broadcast. This is accomplished by supplying your own BroadcastReceiver when calling, which will be treated as a final receiver at the end of the broadcast -- its `BroadcastReceiver#onReceive` method will be called with the result values collected from the other receivers. The broadcast will be serialized in the same way as calling `sendOrderedBroadcast(android.content.Intent,java.lang.String)`. Like `sendBroadcast(android.content.Intent)`, this method is asynchronous; it will return before resultReceiver.onReceive() is called. Note that the sticky data stored is only the data you initially supply to the broadcast, not the result of any changes made by the receivers. See `BroadcastReceiver` for more information on Intent broadcasts. Requires `android.Manifest.permission#BROADCAST_STICKY`
`Unit`	`sendStickyOrderedBroadcastAsUser(intent: Intent!, user: UserHandle!, resultReceiver: BroadcastReceiver?, scheduler: Handler?, initialCode: Int, initialData: String?, initialExtras: Bundle?)` Version of `sendStickyOrderedBroadcast(android.content.Intent,android.content.BroadcastReceiver,android.os.Handler,int,java.lang.String,android.os.Bundle)` that allows you to specify the user the broadcast will be sent to. This is not available to applications that are not pre-installed on the system image. See `BroadcastReceiver` for more information on Intent broadcasts. Requires android.Manifest.permission.INTERACT_ACROSS_USERS and `android.Manifest.permission#BROADCAST_STICKY`
`Unit`	`setTheme(resid: Int)`
`Unit`	`setWallpaper(bitmap: Bitmap!)`
`Unit`	`setWallpaper(data: InputStream!)`
`Unit`	`startActivities(intents: Array<Intent!>!)`
`Unit`	`startActivities(intents: Array<Intent!>!, options: Bundle?)` Launch multiple new activities. This is generally the same as calling `startActivity(android.content.Intent)` for the first Intent in the array, that activity during its creation calling `startActivity(android.content.Intent)` for the second entry, etc. Note that unlike that approach, generally none of the activities except the last in the array will be created at this point, but rather will be created when the user first visits them (due to pressing back from the activity on top). This method throws `ActivityNotFoundException` if there was no Activity found for any given Intent. In this case the state of the activity stack is undefined (some Intents in the list may be on it, some not), so you probably want to avoid such situations.
`Unit`	`startActivity(intent: Intent!)`
`Unit`	`startActivity(intent: Intent!, options: Bundle?)` Launch a new activity. You will not receive any information about when the activity exits. Note that if this method is being called from outside of an `android.app.Activity` Context, then the Intent must include the `Intent#FLAG_ACTIVITY_NEW_TASK` launch flag. This is because, without being started from an existing Activity, there is no existing task in which to place the new activity and thus it needs to be placed in its own separate task. This method throws `ActivityNotFoundException` if there was no Activity found to run the given Intent.
`ComponentName?`	`startForegroundService(service: Intent!)` Similar to `startService(android.content.Intent)`, but with an implicit promise that the Service will call `startForeground(int, android.app.Notification)` once it begins running. The service is given an amount of time comparable to the ANR interval to do this, otherwise the system will automatically crash the process, in which case an internal exception `ForegroundServiceDidNotStartInTimeException` is logged on logcat on devices running SDK Version `android.os.Build.VERSION_CODES#S` or later. On older Android versions, an internal exception `RemoteServiceException` is logged instead, with a corresponding message. Unlike the ordinary `startService(android.content.Intent)`, this method can be used at any time, regardless of whether the app hosting the service is in a foreground state. Note: Beginning with SDK Version `android.os.Build.VERSION_CODES#S`, apps targeting SDK Version `android.os.Build.VERSION_CODES#S` or higher are not allowed to start foreground services from the background. See Behavior changes: Apps targeting Android 12 for more details.
`Boolean`	`startInstrumentation(className: ComponentName, profileFile: String?, arguments: Bundle?)` Start executing an `android.app.Instrumentation` class. The given Instrumentation component will be run by killing its target application (if currently running), starting the target process, instantiating the instrumentation component, and then letting it drive the application. This function is not synchronous -- it returns as soon as the instrumentation has started and while it is running. Instrumentation is normally only allowed to run against a package that is either unsigned or signed with a signature that the the instrumentation package is also signed with (ensuring the target trusts the instrumentation).
`Unit`	`startIntentSender(intent: IntentSender!, fillInIntent: Intent?, flagsMask: Int, flagsValues: Int, extraFlags: Int)` Same as `startIntentSender(android.content.IntentSender,android.content.Intent,int,int,int,android.os.Bundle)` with no options specified.
`Unit`	`startIntentSender(intent: IntentSender!, fillInIntent: Intent?, flagsMask: Int, flagsValues: Int, extraFlags: Int, options: Bundle?)` Like `startActivity(android.content.Intent,android.os.Bundle)`, but taking a IntentSender to start. If the IntentSender is for an activity, that activity will be started as if you had called the regular `startActivity(android.content.Intent)` here; otherwise, its associated action will be executed (such as sending a broadcast) as if you had called android.content.IntentSender#sendIntent on it.
`ComponentName?`	`startService(service: Intent!)` Request that a given application service be started. The Intent should either contain the complete class name of a specific service implementation to start, or a specific package name to target. If the Intent is less specified, it logs a warning about this. In this case any of the multiple matching services may be used. If this service is not already running, it will be instantiated and started (creating a process for it if needed); if it is running then it remains running. Every call to this method will result in a corresponding call to the target service's `android.app.Service#onStartCommand` method, with the intent given here. This provides a convenient way to submit jobs to a service without having to bind and call on to its interface. Using startService() overrides the default service lifetime that is managed by #bindService: it requires the service to remain running until `stopService` is called, regardless of whether any clients are connected to it. Note that calls to startService() do not nest: no matter how many times you call startService(), a single call to `stopService` will stop it. The system attempts to keep running services around as much as possible. The only time they should be stopped is if the current foreground application is using so many resources that the service needs to be killed. If any errors happen in the service's process, it will automatically be restarted. This function will throw `SecurityException` if you do not have permission to start the given service. Note: Each call to startService() results in significant work done by the system to manage service lifecycle surrounding the processing of the intent, which can take multiple milliseconds of CPU time. Due to this cost, startService() should not be used for frequent intent delivery to a service, and only for scheduling significant work. Use #bindService for high frequency calls. Beginning with SDK Version `android.os.Build.VERSION_CODES#O`, apps targeting SDK Version `android.os.Build.VERSION_CODES#O` or higher are not allowed to start background services from the background. See Background Execution Limits for more details. Note: Beginning with SDK Version `android.os.Build.VERSION_CODES#S`, apps targeting SDK Version `android.os.Build.VERSION_CODES#S` or higher are not allowed to start foreground services from the background. See Behavior changes: Apps targeting Android 12 for more details.
`Boolean`	`stopService(name: Intent!)`
`Unit`	`unbindService(conn: ServiceConnection)`
`Unit`	`unregisterComponentCallbacks(callback: ComponentCallbacks!)` Remove a `ComponentCallbacks` object that was previously registered with `registerComponentCallbacks(android.content.ComponentCallbacks)`. After `Build.VERSION_CODES#TIRAMISU`, the `ComponentCallbacks` will be unregistered to `the base Context`, and can be only used after `attachBaseContext(android.content.Context)`
`Unit`	`unregisterDeviceIdChangeListener(listener: IntConsumer)` Removes a device ID changed listener from the Context. It's a no-op if the listener is not already registered.
`Unit`	`unregisterReceiver(receiver: BroadcastReceiver!)`
`Unit`	`updateServiceGroup(conn: ServiceConnection, group: Int, importance: Int)`

From class Context

`Boolean`	`bindIsolatedService(service: Intent, flags: Context.BindServiceFlags, instanceName: String, executor: Executor, conn: ServiceConnection)` See `bindIsolatedService(android.content.Intent,int,java.lang.String,java.util.concurrent.Executor,android.content.ServiceConnection)` Call `BindServiceFlags#of(long)` to obtain a BindServiceFlags object.
`Int`	`getColor(id: Int)` Returns a color associated with a particular resource ID and styled for the current theme.
`ColorStateList`	`getColorStateList(id: Int)` Returns a color state list associated with a particular resource ID and styled for the current theme.
`Drawable?`	`getDrawable(id: Int)` Returns a drawable object associated with a particular resource ID and styled for the current theme.
`String`	`getString(resId: Int)` Returns a localized string from the application's package's default string table.
`String`	`getString(resId: Int, vararg formatArgs: Any!)` Returns a localized formatted string from the application's package's default string table, substituting the format arguments as defined in `java.util.Formatter` and java.lang.String#format.
`T`	`getSystemService(serviceClass: Class<T>)` Return the handle to a system-level service by class. Currently available classes are: `android.view.WindowManager`, `android.view.LayoutInflater`, `android.app.ActivityManager`, `android.os.PowerManager`, `android.app.AlarmManager`, `android.app.NotificationManager`, `android.app.KeyguardManager`, `android.location.LocationManager`, `android.app.SearchManager`, `android.os.Vibrator`, `android.net.ConnectivityManager`, `android.net.wifi.WifiManager`, `android.media.AudioManager`, `android.media.MediaRouter`, `android.telephony.TelephonyManager`, `android.telephony.SubscriptionManager`, `android.view.inputmethod.InputMethodManager`, `android.app.UiModeManager`, `android.app.DownloadManager`, `android.os.BatteryManager`, `android.app.job.JobScheduler`, `android.app.usage.NetworkStatsManager`, `android.content.pm.verify.domain.DomainVerificationManager`, `android.view.displayhash.DisplayHashManager`. Note: System services obtained via this API may be closely associated with the Context in which they are obtained from. In general, do not share the service objects between various different contexts (Activities, Applications, Services, Providers, etc.) Note: Instant apps, for which `PackageManager#isInstantApp()` returns true, don't have access to the following system services: `DEVICE_POLICY_SERVICE`, `FINGERPRINT_SERVICE`, `KEYGUARD_SERVICE`, `SHORTCUT_SERVICE`, `USB_SERVICE`, `WALLPAPER_SERVICE`, `WIFI_P2P_SERVICE`, `WIFI_SERVICE`, `WIFI_AWARE_SERVICE`. For these services this method will return `null`. Generally, if you are running as an instant app you should always check whether the result of this method is `null`.
`CharSequence`	`getText(resId: Int)` Return a localized, styled CharSequence from the application's package's default string table.
`TypedArray`	`obtainStyledAttributes(attrs: IntArray)` Retrieve styled attribute information in this Context's theme. See `android.content.res.Resources.Theme#obtainStyledAttributes(int[])` for more information.
`TypedArray`	`obtainStyledAttributes(resid: Int, attrs: IntArray)` Retrieve styled attribute information in this Context's theme. See `android.content.res.Resources.Theme#obtainStyledAttributes(int, int[])` for more information.
`TypedArray`	`obtainStyledAttributes(set: AttributeSet?, attrs: IntArray)` Retrieve styled attribute information in this Context's theme. See `android.content.res.Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)` for more information.
`TypedArray`	`obtainStyledAttributes(set: AttributeSet?, attrs: IntArray, defStyleAttr: Int, defStyleRes: Int)` Retrieve styled attribute information in this Context's theme. See `android.content.res.Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int)` for more information.
`Unit`	`revokeSelfPermissionOnKill(permName: String)` Triggers the asynchronous revocation of a runtime permission. If the permission is not currently granted, nothing happens (even if later granted by the user).
`Unit`	`sendBroadcastWithMultiplePermissions(intent: Intent, receiverPermissions: Array<String!>)` Broadcast the given intent to all interested BroadcastReceivers, allowing an array of required permissions to be enforced. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run. No results are propagated from receivers and receivers can not abort the broadcast. If you want to allow receivers to propagate results or abort the broadcast, you must send an ordered broadcast using `sendOrderedBroadcast(android.content.Intent,java.lang.String)`. See `BroadcastReceiver` for more information on Intent broadcasts.

From class ComponentCallbacks

Unit

onConfigurationChanged(newConfig: Configuration)

Called by the system when the device configuration changes while your component is running. Note that, unlike activities, other components are never restarted when a configuration changes: they must always deal with the results of the change, such as by re-retrieving resources.

At the time that this function has been called, your Resources object will have been updated to return resource values matching the new configuration.

For more information, read Handling Runtime Changes.

Unit

onLowMemory()

This is called when the overall system is running low on memory, and actively running processes should trim their memory usage. While the exact point at which this will be called is not defined, generally it will happen when all background process have been killed. That is, before reaching the point of killing processes hosting service and foreground UI that we would like to avoid killing.

Constants

SERVICE_INTERFACE

Added in API level 24

static val SERVICE_INTERFACE: String

The Intent that must be declared as handled by the service.

Value: "android.telecom.CallScreeningService"

Public constructors

CallScreeningService

Added in API level 24

CallScreeningService()

Public methods

onBind

Added in API level 24

open fun onBind(intent: Intent!): IBinder?

Parameters
`intent`	Intent!: The Intent that was used to bind to this service, as given to android.content.Context#bindService. Note that any extras that were included with the Intent at that point will not be seen here.

Return
`IBinder?`	Return an IBinder through which clients can call on to the service.

onScreenCall

Added in API level 24

abstract fun onScreenCall(callDetails: Call.Details): Unit

Called when a new incoming or outgoing call is added.

A CallScreeningService must indicate whether an incoming call is allowed or not by calling CallScreeningService#respondToCall(Call.Details, CallScreeningService.CallResponse). Your app can tell if a call is an incoming call by checking to see if Call.Details#getCallDirection() is Call.Details#DIRECTION_INCOMING.

Note: A CallScreeningService must respond to a call within 5 seconds. After this time, the framework will unbind from the CallScreeningService and ignore its response.

Note: The Call.Details instance provided to a call screening service will only have the following properties set. The rest of the Call.Details properties will be set to their default value or null.

Only calls where the handle scheme is PhoneAccount#SCHEME_TEL are passed for call screening. Further, only calls which are not in the user's contacts are passed for screening, unless the CallScreeningService has been granted Manifest.permission#READ_CONTACTS permission by the user. For outgoing calls, no post-dial digits are passed.

Calls with a Call.Details#getHandlePresentation() of TelecomManager#PRESENTATION_RESTRICTED, TelecomManager#PRESENTATION_UNKNOWN, TelecomManager#PRESENTATION_UNAVAILABLE or TelecomManager#PRESENTATION_PAYPHONE presentation are not provided to the CallScreeningService.

Parameters
`callDetails`	Call.Details: Information about a new call, see `Call.Details`. This value cannot be `null`.

onUnbind

Added in API level 24

open fun onUnbind(intent: Intent!): Boolean

Parameters
`intent`	Intent!: The Intent that was used to bind to this service, as given to android.content.Context#bindService. Note that any extras that were included with the Intent at that point will not be seen here.

Return
`Boolean`	Return true if you would like to have the service's `onRebind` method later called when new clients bind to it.

respondToCall

Added in API level 24

fun respondToCall(
    callDetails: Call.Details, 
    response: CallScreeningService.CallResponse
): Unit

Responds to the given incoming call, either allowing it, silencing it or disallowing it.

The CallScreeningService calls this method to inform the system whether the call should be silently blocked or not. In the event that it should not be blocked, it may also be requested to ring silently.

Calls to this method are ignored unless the Call.Details#getCallDirection() is Call.Details#DIRECTION_INCOMING.

For incoming calls, a CallScreeningService MUST call this method within 5 seconds of onScreenCall(android.telecom.Call.Details) being invoked by the platform.

Calls which are blocked/rejected will be logged to the system call log with a call type of android.provider.CallLog.Calls#BLOCKED_TYPE and android.provider.CallLog.Calls#BLOCK_REASON_CALL_SCREENING_SERVICE block reason.

Parameters
`callDetails`	Call.Details: The call to allow. Must be the same `call` which was provided to the `CallScreeningService` via `onScreenCall(android.telecom.Call.Details)`. This value cannot be `null`.
`response`	CallScreeningService.CallResponse: The `CallScreeningService.CallResponse` which contains information about how to respond to a call. This value cannot be `null`.