HostApduService Class

Reference

Definition

Namespace:: Android.Nfc.CardEmulators

Assembly:: Mono.Android.dll

Important

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HostApduService is a convenience Service class that can be extended to emulate an NFC card inside an Android service component.

[Android.Runtime.Register("android/nfc/cardemulation/HostApduService", DoNotGenerateAcw=true)]
public abstract class HostApduService : Android.App.Service

[<Android.Runtime.Register("android/nfc/cardemulation/HostApduService", DoNotGenerateAcw=true)>]
type HostApduService = class
    inherit Service

Inheritance: Object

Object

Context

ContextWrapper

Service
HostApduService

Attributes: RegisterAttribute

Remarks

HostApduService is a convenience Service class that can be extended to emulate an NFC card inside an Android service component.

<div class="special reference"> <h3>Developer Guide</h3> For a general introduction to card emulation, see Host-based Card Emulation.

</div>

<h3>NFC Protocols</h3>

Cards emulated by this class are based on the NFC-Forum ISO-DEP protocol (based on ISO/IEC 14443-4) and support processing command Application Protocol Data Units (APDUs) as defined in the ISO/IEC 7816-4 specification.

<h3>Service selection</h3>

When a remote NFC device wants to talk to your service, it sends a so-called "SELECT AID" APDU as defined in the ISO/IEC 7816-4 specification. The AID is an application identifier defined in ISO/IEC 7816-4.

The registration procedure for AIDs is defined in the ISO/IEC 7816-5 specification. If you don't want to register an AID, you are free to use AIDs in the proprietary range: bits 8-5 of the first byte must each be set to '1'. For example, "0xF00102030405" is a proprietary AID. If you do use proprietary AIDs, it is recommended to choose an AID of at least 6 bytes, to reduce the risk of collisions with other applications that might be using proprietary AIDs as well.

<h3>AID groups</h3>

In some cases, a service may need to register multiple AIDs to implement a certain application, and it needs to be sure that it is the default handler for all of these AIDs (as opposed to some AIDs in the group going to another service).

An AID group is a list of AIDs that should be considered as belonging together by the OS. For all AIDs in an AID group, the OS will guarantee one of the following: <ul> <li>All AIDs in the group are routed to this service <li>No AIDs in the group are routed to this service </ul> In other words, there is no in-between state, where some AIDs in the group can be routed to this service, and some to another. <h3>AID groups and categories</h3>

Each AID group can be associated with a category. This allows the Android OS to classify services, and it allows the user to set defaults at the category level instead of the AID level.

You can use CardEmulation#isDefaultServiceForCategory(android.content.ComponentName, String) to determine if your service is the default handler for a category.

In this version of the platform, the only known categories are CardEmulation#CATEGORY_PAYMENT and CardEmulation#CATEGORY_OTHER. AID groups without a category, or with a category that is not recognized by the current platform version, will automatically be grouped into the CardEmulation#CATEGORY_OTHER category. <h3>Service AID registration</h3>

To tell the platform which AIDs groups are requested by this service, a #SERVICE_META_DATA entry must be included in the declaration of the service. An example of a HostApduService manifest declaration is shown below:

&lt;service android:name=".MyHostApduService" android:exported="true" android:permission="android.permission.BIND_NFC_SERVICE"&gt;
                &lt;intent-filter&gt;
                    &lt;action android:name="android.nfc.cardemulation.action.HOST_APDU_SERVICE"/&gt;
                &lt;/intent-filter&gt;
                &lt;meta-data android:name="android.nfc.cardemulation.host_apdu_ervice" android:resource="@xml/apduservice"/&gt;
            &lt;/service&gt;

This meta-data tag points to an apduservice.xml file. An example of this file with a single AID group declaration is shown below:

&lt;host-apdu-service xmlns:android="http://schemas.android.com/apk/res/android"
                      android:description="@string/servicedesc" android:requireDeviceUnlock="false"&gt;
                  &lt;aid-group android:description="@string/aiddescription" android:category="other">
                      &lt;aid-filter android:name="F0010203040506"/&gt;
                      &lt;aid-filter android:name="F0394148148100"/&gt;
                  &lt;/aid-group&gt;
            &lt;/host-apdu-service&gt;

The android.R.styleable#HostApduService <host-apdu-service> is required to contain a android.R.styleable#HostApduService_description <android:description> attribute that contains a user-friendly description of the service that may be shown in UI. The android.R.styleable#HostApduService_requireDeviceUnlock <requireDeviceUnlock> attribute can be used to specify that the device must be unlocked before this service can be invoked to handle APDUs.

The android.R.styleable#HostApduService <host-apdu-service> must contain one or more android.R.styleable#AidGroup <aid-group> tags. Each android.R.styleable#AidGroup <aid-group> must contain one or more android.R.styleable#AidFilter <aid-filter> tags, each of which contains a single AID. The AID must be specified in hexadecimal format, and contain an even number of characters. <h3>AID conflict resolution</h3> Multiple HostApduServices may be installed on a single device, and the same AID can be registered by more than one service. The Android platform resolves AID conflicts depending on which category an AID belongs to. Each category may have a different conflict resolution policy. For example, for some categories the user may be able to select a default service in the Android settings UI. For other categories, to policy may be to always ask the user which service is to be invoked in case of conflict.

To query the conflict resolution policy for a certain category, see CardEmulation#getSelectionModeForCategory(String).

<h3>Data exchange</h3>

Once the platform has resolved a "SELECT AID" command APDU to a specific service component, the "SELECT AID" command APDU and all subsequent command APDUs will be sent to that service through #processCommandApdu(byte[], Bundle), until either: <ul> <li>The NFC link is broken</li> <li>A "SELECT AID" APDU is received which resolves to another service</li> </ul> These two scenarios are indicated by a call to #onDeactivated(int).

<p class="note">Use of this class requires the PackageManager#FEATURE_NFC_HOST_CARD_EMULATION to be present on the device.

Java documentation for android.nfc.cardemulation.HostApduService.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Constructors

HostApduService()
HostApduService(IntPtr, JniHandleOwnership)	A constructor used when creating managed representations of JNI objects; called by the runtime.

Fields

AccessibilityService	Use with `#getSystemService(String)` to retrieve a `android.view.accessibility.AccessibilityManager` for giving the user feedback for UI events through the registered event listeners. (Inherited from Context)
AccountService	Use with `#getSystemService(String)` to retrieve a `android.accounts.AccountManager` for receiving intents at a time of your choosing. (Inherited from Context)
ActivityService	Use with `#getSystemService(String)` to retrieve a `android.app.ActivityManager` for interacting with the global system state. (Inherited from Context)
AlarmService	Use with `#getSystemService(String)` to retrieve a `android.app.AlarmManager` for receiving intents at a time of your choosing. (Inherited from Context)
AppOpsService	Use with `#getSystemService(String)` to retrieve a `android.app.AppOpsManager` for tracking application operations on the device. (Inherited from Context)
AppSearchService	Use with `#getSystemService(String)` to retrieve an `android.app.appsearch.AppSearchManager` for indexing and querying app data managed by the system. (Inherited from Context)
AppwidgetService	Use with `#getSystemService(String)` to retrieve a `android.appwidget.AppWidgetManager` for accessing AppWidgets. (Inherited from Context)
AudioService	Use with `#getSystemService(String)` to retrieve a `android.media.AudioManager` for handling management of volume, ringer modes and audio routing. (Inherited from Context)
BatteryService	Use with `#getSystemService(String)` to retrieve a `android.os.BatteryManager` for managing battery state. (Inherited from Context)
BindAllowActivityStarts	Obsolete. Flag for `#bindService`: If binding from an app that is visible, the bound service is allowed to start an activity from background. (Inherited from Context)
BindExternalServiceLong	Works in the same way as `#BIND_EXTERNAL_SERVICE`, but it's defined as a ( (Inherited from Context)
BindNotPerceptible	Obsolete. 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. (Inherited from Context)
BindSharedIsolatedProcess	Obsolete. Flag for `#bindIsolatedService`: Bind the service into a shared isolated process. (Inherited from Context)
BiometricService	Use with `#getSystemService(String)` to retrieve a `android.hardware.biometrics.BiometricManager` for handling biometric and PIN/pattern/password authentication. (Inherited from Context)
BlobStoreService	Use with `#getSystemService(String)` to retrieve a `android.app.blob.BlobStoreManager` for contributing and accessing data blobs from the blob store maintained by the system. (Inherited from Context)
BluetoothService	Use with `#getSystemService(String)` to retrieve a `android.bluetooth.BluetoothManager` for using Bluetooth. (Inherited from Context)
BugreportService	Service to capture a bugreport. (Inherited from Context)
CameraService	Use with `#getSystemService(String)` to retrieve a `android.hardware.camera2.CameraManager` for interacting with camera devices. (Inherited from Context)
CaptioningService	Use with `#getSystemService(String)` to retrieve a `android.view.accessibility.CaptioningManager` for obtaining captioning properties and listening for changes in captioning preferences. (Inherited from Context)
CarrierConfigService	Use with `#getSystemService(String)` to retrieve a `android.telephony.CarrierConfigManager` for reading carrier configuration values. (Inherited from Context)
ClipboardService	Use with `#getSystemService(String)` to retrieve a `android.content.ClipboardManager` for accessing and modifying the contents of the global clipboard. (Inherited from Context)
CompanionDeviceService	Use with `#getSystemService(String)` to retrieve a `android.companion.CompanionDeviceManager` for managing companion devices (Inherited from Context)
ConnectivityDiagnosticsService	Use with `#getSystemService(String)` to retrieve a `android.net.ConnectivityDiagnosticsManager` for performing network connectivity diagnostics as well as receiving network connectivity information from the system. (Inherited from Context)
ConnectivityService	Use with `#getSystemService(String)` to retrieve a `android.net.ConnectivityManager` for handling management of network connections. (Inherited from Context)
ConsumerIrService	Use with `#getSystemService(String)` to retrieve a `android.hardware.ConsumerIrManager` for transmitting infrared signals from the device. (Inherited from Context)
CredentialService	Use with `#getSystemService(String)` to retrieve a `android.credentials.CredentialManager` to authenticate a user to your app. (Inherited from Context)
CrossProfileAppsService	Use with `#getSystemService(String)` to retrieve a `android.content.pm.CrossProfileApps` for cross profile operations. (Inherited from Context)
DeactivationDeselected	Obsolete. Reason for `#onDeactivated(int)`.
DeactivationLinkLoss	Obsolete. Reason for `#onDeactivated(int)`.
DeviceIdDefault	The default device ID, which is the ID of the primary (non-virtual) device. (Inherited from Context)
DeviceIdInvalid	Invalid device ID. (Inherited from Context)
DeviceLockService	Use with `#getSystemService(String)` to retrieve a `android.devicelock.DeviceLockManager`. (Inherited from Context)
DevicePolicyService	Use with `#getSystemService(String)` to retrieve a `android.app.admin.DevicePolicyManager` for working with global device policy management. (Inherited from Context)
DisplayHashService	Use with `#getSystemService(String)` to access `android.view.displayhash.DisplayHashManager` to handle display hashes. (Inherited from Context)
DisplayService	Use with `#getSystemService(String)` to retrieve a `android.hardware.display.DisplayManager` for interacting with display devices. (Inherited from Context)
DomainVerificationService	Use with `#getSystemService(String)` to access `android.content.pm.verify.domain.DomainVerificationManager` to retrieve approval and user state for declared web domains. (Inherited from Context)
DownloadService	Use with `#getSystemService(String)` to retrieve a `android.app.DownloadManager` for requesting HTTP downloads. (Inherited from Context)
DropboxService	Use with `#getSystemService(String)` to retrieve a `android.os.DropBoxManager` instance for recording diagnostic logs. (Inherited from Context)
EuiccService	Use with `#getSystemService(String)` to retrieve a `android.telephony.euicc.EuiccManager` to manage the device eUICC (embedded SIM). (Inherited from Context)
FileIntegrityService	Use with `#getSystemService(String)` to retrieve an `android.security.FileIntegrityManager`. (Inherited from Context)
FingerprintService	Use with `#getSystemService(String)` to retrieve a `android.hardware.fingerprint.FingerprintManager` for handling management of fingerprints. (Inherited from Context)
GameService	Use with `#getSystemService(String)` to retrieve a `GameManager`. (Inherited from Context)
GrammaticalInflectionService	Use with `#getSystemService(String)` to retrieve a `GrammaticalInflectionManager`. (Inherited from Context)
HardwarePropertiesService	Use with `#getSystemService(String)` to retrieve a `android.os.HardwarePropertiesManager` for accessing the hardware properties service. (Inherited from Context)
HealthconnectService	Use with `#getSystemService(String)` to retrieve a `android.health.connect.HealthConnectManager`. (Inherited from Context)
InputMethodService	Use with `#getSystemService(String)` to retrieve a `android.view.inputmethod.InputMethodManager` for accessing input methods. (Inherited from Context)
InputService	Use with `#getSystemService(String)` to retrieve a `android.hardware.input.InputManager` for interacting with input devices. (Inherited from Context)
IpsecService	Use with `#getSystemService(String)` to retrieve a `android.net.IpSecManager` for encrypting Sockets or Networks with IPSec. (Inherited from Context)
JobSchedulerService	Use with `#getSystemService(String)` to retrieve a `android.app.job.JobScheduler` instance for managing occasional background tasks. (Inherited from Context)
KeyguardService	Use with `#getSystemService(String)` to retrieve a `android.app.KeyguardManager` for controlling keyguard. (Inherited from Context)
LauncherAppsService	Use with `#getSystemService(String)` to retrieve a `android.content.pm.LauncherApps` for querying and monitoring launchable apps across profiles of a user. (Inherited from Context)
LayoutInflaterService	Use with `#getSystemService(String)` to retrieve a `android.view.LayoutInflater` for inflating layout resources in this context. (Inherited from Context)
LocaleService	Use with `#getSystemService(String)` to retrieve a `android.app.LocaleManager`. (Inherited from Context)
LocationService	Use with `#getSystemService(String)` to retrieve a `android.location.LocationManager` for controlling location updates. (Inherited from Context)
MediaCommunicationService	Use with `#getSystemService(String)` to retrieve a `android.media.MediaCommunicationManager` for managing `android.media.MediaSession2`. (Inherited from Context)
MediaMetricsService	Use with `#getSystemService(String)` to retrieve a `android.media.metrics.MediaMetricsManager` for interacting with media metrics on the device. (Inherited from Context)
MediaProjectionService	Use with `#getSystemService(String)` to retrieve a `android.media.projection.MediaProjectionManager` instance for managing media projection sessions. (Inherited from Context)
MediaRouterService	Use with `#getSystemService` to retrieve a `android.media.MediaRouter` for controlling and managing routing of media. (Inherited from Context)
MediaSessionService	Use with `#getSystemService(String)` to retrieve a `android.media.session.MediaSessionManager` for managing media Sessions. (Inherited from Context)
MidiService	Use with `#getSystemService(String)` to retrieve a `android.media.midi.MidiManager` for accessing the MIDI service. (Inherited from Context)
NetworkStatsService	Use with `#getSystemService(String)` to retrieve a `android.app.usage.NetworkStatsManager` for querying network usage stats. (Inherited from Context)
NfcService	Use with `#getSystemService(String)` to retrieve a `android.nfc.NfcManager` for using NFC. (Inherited from Context)
NotificationService	Use with `#getSystemService(String)` to retrieve a `android.app.NotificationManager` for informing the user of background events. (Inherited from Context)
NsdService	Use with `#getSystemService(String)` to retrieve a `android.net.nsd.NsdManager` for handling management of network service discovery (Inherited from Context)
OverlayService	Use with `#getSystemService(String)` to retrieve a `android.content.om.OverlayManager` for managing overlay packages. (Inherited from Context)
PeopleService	Use with `#getSystemService(String)` to access a `PeopleManager` to interact with your published conversations. (Inherited from Context)
PerformanceHintService	Use with `#getSystemService(String)` to retrieve a `android.os.PerformanceHintManager` for accessing the performance hinting service. (Inherited from Context)
PowerService	Use with `#getSystemService(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. (Inherited from Context)
PrintService	`android.print.PrintManager` for printing and managing printers and print tasks. (Inherited from Context)
ReceiverExported	Obsolete. Flag for `#registerReceiver`: The receiver can receive broadcasts from other Apps. (Inherited from Context)
ReceiverNotExported	Obsolete. Flag for `#registerReceiver`: The receiver cannot receive broadcasts from other Apps. (Inherited from Context)
ReceiverVisibleToInstantApps	Obsolete. Flag for `#registerReceiver`: The receiver can receive broadcasts from Instant Apps. (Inherited from Context)
RestrictionsService	Use with `#getSystemService(String)` to retrieve a `android.content.RestrictionsManager` for retrieving application restrictions and requesting permissions for restricted operations. (Inherited from Context)
RoleService	Use with `#getSystemService(String)` to retrieve a `android.app.role.RoleManager` for managing roles. (Inherited from Context)
SearchService	Use with `#getSystemService(String)` to retrieve a `android.app.SearchManager` for handling searches. (Inherited from Context)
SensorService	Use with `#getSystemService(String)` to retrieve a `android.hardware.SensorManager` for accessing sensors. (Inherited from Context)
ServiceInterface	The `Intent` action that must be declared as handled by the service.
ServiceMetaData	The name of the meta-data element that contains more information about this service.
ShortcutService	Use with `#getSystemService(String)` to retrieve a `android.content.pm.ShortcutManager` for accessing the launcher shortcut service. (Inherited from Context)
StatusBarService	Use with `#getSystemService(String)` to retrieve a `android.app.StatusBarManager` for interacting with the status bar and quick settings. (Inherited from Context)
StopForegroundDetach	Obsolete. Selector for `#stopForeground(int)`: if set, the notification previously supplied to `#startForeground` will be detached from the service's lifecycle. (Inherited from Service)
StopForegroundLegacy	Selector for `#stopForeground(int)`: equivalent to passing `false` to the legacy API `#stopForeground(boolean)`. (Inherited from Service)
StopForegroundRemove	Obsolete. Selector for `#stopForeground(int)`: if supplied, the notification previously supplied to `#startForeground` will be cancelled and removed from display. (Inherited from Service)
StorageService	Use with `#getSystemService(String)` to retrieve a `android.os.storage.StorageManager` for accessing system storage functions. (Inherited from Context)
StorageStatsService	Use with `#getSystemService(String)` to retrieve a `android.app.usage.StorageStatsManager` for accessing system storage statistics. (Inherited from Context)
SystemHealthService	Use with `#getSystemService(String)` to retrieve a `android.os.health.SystemHealthManager` for accessing system health (battery, power, memory, etc) metrics. (Inherited from Context)
TelecomService	Use with `#getSystemService(String)` to retrieve a `android.telecom.TelecomManager` to manage telecom-related features of the device. (Inherited from Context)
TelephonyImsService	Use with `#getSystemService(String)` to retrieve an `android.telephony.ims.ImsManager`. (Inherited from Context)
TelephonyService	Use with `#getSystemService(String)` to retrieve a `android.telephony.TelephonyManager` for handling management the telephony features of the device. (Inherited from Context)
TelephonySubscriptionService	Use with `#getSystemService(String)` to retrieve a `android.telephony.SubscriptionManager` for handling management the telephony subscriptions of the device. (Inherited from Context)
TextClassificationService	Use with `#getSystemService(String)` to retrieve a `TextClassificationManager` for text classification services. (Inherited from Context)
TextServicesManagerService	Use with `#getSystemService(String)` to retrieve a `android.view.textservice.TextServicesManager` for accessing text services. (Inherited from Context)
TvInputService	Use with `#getSystemService(String)` to retrieve a `android.media.tv.TvInputManager` for interacting with TV inputs on the device. (Inherited from Context)
TvInteractiveAppService	Use with `#getSystemService(String)` to retrieve a `android.media.tv.interactive.TvInteractiveAppManager` for interacting with TV interactive applications on the device. (Inherited from Context)
UiModeService	Use with `#getSystemService(String)` to retrieve a `android.app.UiModeManager` for controlling UI modes. (Inherited from Context)
UsageStatsService	Use with `#getSystemService(String)` to retrieve a `android.app.usage.UsageStatsManager` for querying device usage stats. (Inherited from Context)
UsbService	Use with `#getSystemService(String)` to retrieve a `android.hardware.usb.UsbManager` for access to USB devices (as a USB host) and for controlling this device's behavior as a USB device. (Inherited from Context)
UserService	Use with `#getSystemService(String)` to retrieve a `android.os.UserManager` for managing users on devices that support multiple users. (Inherited from Context)
VibratorManagerService	Use with `#getSystemService(String)` to retrieve a `android.os.VibratorManager` for accessing the device vibrators, interacting with individual ones and playing synchronized effects on multiple vibrators. (Inherited from Context)
VibratorService	Use with `#getSystemService(String)` to retrieve a `android.os.Vibrator` for interacting with the vibration hardware. (Inherited from Context)
VirtualDeviceService	Use with `#getSystemService(String)` to retrieve a `android.companion.virtual.VirtualDeviceManager` for managing virtual devices. (Inherited from Context)
VpnManagementService	Use with `#getSystemService(String)` to retrieve a `android.net.VpnManager` to manage profiles for the platform built-in VPN. (Inherited from Context)
WallpaperService	Use with `#getSystemService(String)` to retrieve a com. (Inherited from Context)
WifiAwareService	Use with `#getSystemService(String)` to retrieve a `android.net.wifi.aware.WifiAwareManager` for handling management of Wi-Fi Aware. (Inherited from Context)
WifiP2pService	Use with `#getSystemService(String)` to retrieve a `android.net.wifi.p2p.WifiP2pManager` for handling management of Wi-Fi peer-to-peer connections. (Inherited from Context)
WifiRttRangingService	Use with `#getSystemService(String)` to retrieve a `android.net.wifi.rtt.WifiRttManager` for ranging devices with wifi. (Inherited from Context)
WifiService	Use with `#getSystemService(String)` to retrieve a `android.net.wifi.WifiManager` for handling management of Wi-Fi access. (Inherited from Context)
WindowService	Use with `#getSystemService(String)` to retrieve a `android.view.WindowManager` for accessing the system's window manager. (Inherited from Context)

Properties

Application	Return the application that owns this service. (Inherited from Service)
ApplicationContext	Return the context of the single, global Application object of the current process. (Inherited from ContextWrapper)
ApplicationInfo	Return the full application info for this context's package. (Inherited from ContextWrapper)
Assets	Return an AssetManager instance for your application's package. (Inherited from ContextWrapper)
AttributionSource	(Inherited from Context)
AttributionTag	Attribution can be used in complex apps to logically separate parts of the app. (Inherited from Context)
BaseContext	(Inherited from ContextWrapper)
CacheDir	Returns the absolute path to the application specific cache directory on the filesystem. (Inherited from ContextWrapper)
Class	Returns the runtime class of this `Object`. (Inherited from Object)
ClassLoader	Return a class loader you can use to retrieve classes in this package. (Inherited from ContextWrapper)
CodeCacheDir	Returns the absolute path to the application specific cache directory on the filesystem designed for storing cached code. (Inherited from ContextWrapper)
ContentResolver	Return a ContentResolver instance for your application's package. (Inherited from ContextWrapper)
DataDir	(Inherited from ContextWrapper)
DeviceId	Gets the device ID this context is associated with. (Inherited from Context)
Display	Get the display this context is associated with. (Inherited from Context)
ExternalCacheDir	Returns the absolute path to the directory on the primary external filesystem (that is somewhere on ExternalStorageDirectory where the application can place cache files it owns. (Inherited from ContextWrapper)
FilesDir	Returns the absolute path to the directory on the filesystem where files created with OpenFileOutput(String, FileCreationMode) are stored. (Inherited from ContextWrapper)
ForegroundServiceType	If the service has become a foreground service by calling `#startForeground(int, Notification)` or `#startForeground(int, Notification, int)`, `#getForegroundServiceType()` returns the current foreground service type. (Inherited from Service)
Handle	The handle to the underlying Android instance. (Inherited from Object)
IsDeviceProtectedStorage	(Inherited from ContextWrapper)
IsRestricted	Indicates whether this Context is restricted. (Inherited from Context)
IsUiContext	Returns `true` if the context is a UI context which can access UI components such as `WindowManager`, `android.view.LayoutInflater LayoutInflater` or `android.app.WallpaperManager WallpaperManager`. (Inherited from Context)
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
MainExecutor	Return an `Executor` that will run enqueued tasks on the main thread associated with this context. (Inherited from Context)
MainLooper	Return the Looper for the main thread of the current process. (Inherited from ContextWrapper)
NoBackupFilesDir	Returns the absolute path to the directory on the filesystem similar to FilesDir. (Inherited from ContextWrapper)
ObbDir	Return the primary external storage directory where this application's OBB files (if there are any) can be found. (Inherited from ContextWrapper)
OpPackageName	Return the package name that should be used for `android.app.AppOpsManager` calls from this context, so that app ops manager's uid verification will work with the name. (Inherited from Context)
PackageCodePath	Return the full path to this context's primary Android package. (Inherited from ContextWrapper)
PackageManager	Return PackageManager instance to find global package information. (Inherited from ContextWrapper)
PackageName	Return the name of this application's package. (Inherited from ContextWrapper)
PackageResourcePath	Return the full path to this context's primary Android package. (Inherited from ContextWrapper)
Params	Return the set of parameters which this Context was created with, if it was created via `#createContext(ContextParams)`. (Inherited from Context)
PeerReference	(Inherited from Object)
Resources	Return a Resources instance for your application's package. (Inherited from ContextWrapper)
Theme	Return the Theme object associated with this Context. (Inherited from ContextWrapper)
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.
Wallpaper	(Inherited from ContextWrapper)
WallpaperDesiredMinimumHeight	(Inherited from ContextWrapper)
WallpaperDesiredMinimumWidth	(Inherited from ContextWrapper)

Methods

AttachBaseContext(Context)	Set the base context for this ContextWrapper. (Inherited from ContextWrapper)
BindService(Intent, Bind, IExecutor, IServiceConnection)	Same as `#bindService(Intent, ServiceConnection, int) bindService(Intent, ServiceConnection, int)` with executor to control ServiceConnection callbacks. (Inherited from Context)
BindService(Intent, Context+BindServiceFlags, IExecutor, IServiceConnection)	(Inherited from Context)
BindService(Intent, IServiceConnection, Bind)	Connect to an application service, creating it if needed. (Inherited from ContextWrapper)
BindService(Intent, IServiceConnection, Context+BindServiceFlags)	(Inherited from Context)
BindServiceAsUser(Intent, IServiceConnection, Context+BindServiceFlags, UserHandle)	(Inherited from Context)
BindServiceAsUser(Intent, IServiceConnection, Int32, UserHandle)	Binds to a service in the given `user` in the same manner as `#bindService`. (Inherited from Context)
CheckCallingOrSelfPermission(String)	Determine whether the calling process of an IPC or you have been granted a particular permission. (Inherited from ContextWrapper)
CheckCallingOrSelfUriPermission(Uri, ActivityFlags)	Determine whether the calling process of an IPC or you has been granted permission to access a specific URI. (Inherited from ContextWrapper)
CheckCallingOrSelfUriPermissions(IList<Uri>, Int32)	Determine whether the calling process of an IPC <em>or you</em> has been granted permission to access a list of URIs. (Inherited from Context)
CheckCallingPermission(String)	Determine whether the calling process of an IPC you are handling has been granted a particular permission. (Inherited from ContextWrapper)
CheckCallingUriPermission(Uri, ActivityFlags)	Determine whether the calling process and user ID has been granted permission to access a specific URI. (Inherited from ContextWrapper)
CheckCallingUriPermissions(IList<Uri>, Int32)	Determine whether the calling process and user ID has been granted permission to access a list of URIs. (Inherited from Context)
CheckPermission(String, Int32, Int32)	Determine whether the given permission is allowed for a particular process and user ID running in the system. (Inherited from ContextWrapper)
CheckSelfPermission(String)	(Inherited from ContextWrapper)
CheckUriPermission(Uri, Int32, Int32, ActivityFlags)	Determine whether a particular process and user ID has been granted permission to access a specific URI. (Inherited from ContextWrapper)
CheckUriPermission(Uri, String, String, Int32, Int32, ActivityFlags)	Check both a Uri and normal permission. (Inherited from ContextWrapper)
CheckUriPermissions(IList<Uri>, Int32, Int32, Int32)	Determine whether a particular process and user ID has been granted permission to access a list of URIs. (Inherited from Context)
ClearWallpaper()	Obsolete. (Inherited from ContextWrapper)
Clone()	Creates and returns a copy of this object. (Inherited from Object)
CreateAttributionContext(String)	Return a new Context object for the current Context but attribute to a different tag. (Inherited from Context)
CreateConfigurationContext(Configuration)	Return a new Context object for the current Context but whose resources are adjusted to match the given Configuration. (Inherited from ContextWrapper)
CreateContext(ContextParams)	Creates a context with specific properties and behaviors. (Inherited from Context)
CreateContextForSplit(String)	(Inherited from ContextWrapper)
CreateDeviceContext(Int32)	Returns a new `Context` object from the current context but with device association given by the `deviceId`. (Inherited from Context)
CreateDeviceProtectedStorageContext()	(Inherited from ContextWrapper)
CreateDisplayContext(Display)	Return a new Context object for the current Context but whose resources are adjusted to match the metrics of the given Display. (Inherited from ContextWrapper)
CreatePackageContext(String, PackageContextFlags)	Return a new Context object for the given application name. (Inherited from ContextWrapper)
CreateWindowContext(Display, Int32, Bundle)	Creates a `Context` for a non-`android.app.Activity activity` window on the given `Display`. (Inherited from Context)
CreateWindowContext(Int32, Bundle)	Creates a Context for a non-activity window. (Inherited from Context)
DatabaseList()	Returns an array of strings naming the private databases associated with this Context's application package. (Inherited from ContextWrapper)
DeleteDatabase(String)	Delete an existing private SQLiteDatabase associated with this Context's application package. (Inherited from ContextWrapper)
DeleteFile(String)	Delete the given private file associated with this Context's application package. (Inherited from ContextWrapper)
DeleteSharedPreferences(String)	(Inherited from ContextWrapper)
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
Dump(FileDescriptor, PrintWriter, String[])	Print the Service's state into the given stream. (Inherited from Service)
EnforceCallingOrSelfPermission(String, String)	If neither you nor the calling process of an IPC you are handling has been granted a particular permission, throw a SecurityException. (Inherited from ContextWrapper)
EnforceCallingOrSelfUriPermission(Uri, ActivityFlags, String)	If the calling process of an IPC or you has not been granted permission to access a specific URI, throw SecurityException. (Inherited from ContextWrapper)
EnforceCallingPermission(String, String)	If the calling process of an IPC you are handling has not been granted a particular permission, throw a SecurityException. (Inherited from ContextWrapper)
EnforceCallingUriPermission(Uri, ActivityFlags, String)	If the calling process and user ID has not been granted permission to access a specific URI, throw SecurityException. (Inherited from ContextWrapper)
EnforcePermission(String, Int32, Int32, String)	If the given permission is not allowed for a particular process and user ID running in the system, throw a SecurityException. (Inherited from ContextWrapper)
EnforceUriPermission(Uri, Int32, Int32, ActivityFlags, String)	If a particular process and user ID has not been granted permission to access a specific URI, throw SecurityException. (Inherited from ContextWrapper)
EnforceUriPermission(Uri, String, String, Int32, Int32, ActivityFlags, String)	Enforce both a Uri and normal permission. (Inherited from ContextWrapper)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
FileList()	Returns an array of strings naming the private files associated with this Context's application package. (Inherited from ContextWrapper)
GetColor(Int32)	Returns a color associated with a particular resource ID and styled for the current theme. (Inherited from Context)
GetColorStateList(Int32)	Returns a color state list associated with a particular resource ID and styled for the current theme. (Inherited from Context)
GetDatabasePath(String)	(Inherited from ContextWrapper)
GetDir(String, FileCreationMode)	Retrieve, creating if needed, a new directory in which the application can place its own custom data files. (Inherited from ContextWrapper)
GetDrawable(Int32)	Returns a drawable object associated with a particular resource ID and styled for the current theme. (Inherited from Context)
GetExternalCacheDirs()	Returns absolute paths to application-specific directories on all external storage devices where the application can place cache files it owns. (Inherited from ContextWrapper)
GetExternalFilesDir(String)	Returns the absolute path to the directory on the primary external filesystem (that is somewhere on ExternalStorageDirectory) where the application can place persistent files it owns. (Inherited from ContextWrapper)
GetExternalFilesDirs(String)	Returns absolute paths to application-specific directories on all external storage devices where the application can place persistent files it owns. (Inherited from ContextWrapper)
GetExternalMediaDirs()	Obsolete. Returns absolute paths to application-specific directories on all external storage devices where the application can place media files. (Inherited from ContextWrapper)
GetFileStreamPath(String)	Returns the absolute path on the filesystem where a file created with OpenFileOutput(String, FileCreationMode) is stored. (Inherited from ContextWrapper)
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
GetObbDirs()	Returns absolute paths to application-specific directories on all external storage devices where the application's OBB files (if there are any) can be found. (Inherited from ContextWrapper)
GetSharedPreferences(String, FileCreationMode)	Retrieve and hold the contents of the preferences file 'name', returning a SharedPreferences through which you can retrieve and modify its values. (Inherited from ContextWrapper)
GetString(Int32)	Returns a localized string from the application's package's default string table. (Inherited from Context)
GetString(Int32, Object[])	Returns a localized string from the application's package's default string table. (Inherited from Context)
GetSystemService(Class)	Return the handle to a system-level service by class. (Inherited from Context)
GetSystemService(String)	Return the handle to a system-level service by name. (Inherited from ContextWrapper)
GetSystemServiceName(Class)	(Inherited from ContextWrapper)
GetText(Int32)	Return a localized, styled CharSequence from the application's package's default string table. (Inherited from Context)
GetTextFormatted(Int32)	Return a localized, styled CharSequence from the application's package's default string table. (Inherited from Context)
GrantUriPermission(String, Uri, ActivityFlags)	Grant permission to access a specific Uri to another package, regardless of whether that package has general permission to access the Uri's content provider. (Inherited from ContextWrapper)
JavaFinalize()	Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
MoveDatabaseFrom(Context, String)	(Inherited from ContextWrapper)
MoveSharedPreferencesFrom(Context, String)	(Inherited from ContextWrapper)
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
NotifyUnhandled()	Calling this method allows the service to tell the OS that it won't be able to complete this transaction - for example, because it requires data connectivity that is not present at that moment.
ObtainStyledAttributes(IAttributeSet, Int32[])	Retrieve styled attribute information in this Context's theme. (Inherited from Context)
ObtainStyledAttributes(IAttributeSet, Int32[], Int32, Int32)	Retrieve styled attribute information in this Context's theme. (Inherited from Context)
ObtainStyledAttributes(Int32, Int32[])	Retrieve styled attribute information in this Context's theme. (Inherited from Context)
ObtainStyledAttributes(Int32[])	Retrieve styled attribute information in this Context's theme. (Inherited from Context)
OnBind(Intent)	Return the communication channel to the service.
OnConfigurationChanged(Configuration)	Called by the system when the device configuration changes while your component is running. (Inherited from Service)
OnCreate()	Called by the system when the service is first created. (Inherited from Service)
OnDeactivated(DeactivationReason)	This method will be called in two possible scenarios: <li>The NFC link has been deactivated or lost <li>A different AID has been selected and was resolved to a different service component
OnDestroy()	Called by the system to notify a Service that it is no longer used and is being removed. (Inherited from Service)
OnLowMemory()	This is called when the overall system is running low on memory, and actively running processes should trim their memory usage. (Inherited from Service)
OnRebind(Intent)	Called when new clients have connected to the service, after it had previously been notified that all had disconnected in its `#onUnbind`. (Inherited from Service)
OnStart(Intent, Int32)	Obsolete. This member is deprecated. (Inherited from Service)
OnStartCommand(Intent, StartCommandFlags, Int32)	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. (Inherited from Service)
OnTaskRemoved(Intent)	This is called if the service is currently running and the user has removed a task that comes from the service's application. (Inherited from Service)
OnTimeout(Int32)	Callback called on timeout for `ServiceInfo#FOREGROUND_SERVICE_TYPE_SHORT_SERVICE`. (Inherited from Service)
OnTrimMemory(TrimMemory)	Called when the operating system has determined that it is a good time for a process to trim unneeded memory from its process. (Inherited from Service)
OnUnbind(Intent)	Called when all clients have disconnected from a particular interface published by the service. (Inherited from Service)
OpenFileInput(String)	Open a private file associated with this Context's application package for reading. (Inherited from ContextWrapper)
OpenFileOutput(String, FileCreationMode)	Open a private file associated with this Context's application package for writing. (Inherited from ContextWrapper)
OpenOrCreateDatabase(String, FileCreationMode, SQLiteDatabase+ICursorFactory)	Open a new private SQLiteDatabase associated with this Context's application package. (Inherited from ContextWrapper)
OpenOrCreateDatabase(String, FileCreationMode, SQLiteDatabase+ICursorFactory, IDatabaseErrorHandler)	Open a new private SQLiteDatabase associated with this Context's application package. (Inherited from ContextWrapper)
PeekWallpaper()	Obsolete. (Inherited from ContextWrapper)
ProcessCommandApdu(Byte[], Bundle)	This method will be called when a command APDU has been received from a remote device.
RegisterComponentCallbacks(IComponentCallbacks)	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. (Inherited from Context)
RegisterDeviceIdChangeListener(IExecutor, IIntConsumer)	Adds a new device ID changed listener to the `Context`, which will be called when the device association is changed by the system. (Inherited from Context)
RegisterReceiver(BroadcastReceiver, IntentFilter)	Register a BroadcastReceiver to be run in the main activity thread. (Inherited from ContextWrapper)
RegisterReceiver(BroadcastReceiver, IntentFilter, ActivityFlags)	Obsolete. (Inherited from ContextWrapper)
RegisterReceiver(BroadcastReceiver, IntentFilter, ReceiverFlags)	(Inherited from Context)
RegisterReceiver(BroadcastReceiver, IntentFilter, String, Handler)	Register to receive intent broadcasts, to run in the context of scheduler. (Inherited from ContextWrapper)
RegisterReceiver(BroadcastReceiver, IntentFilter, String, Handler, ActivityFlags)	Obsolete. (Inherited from ContextWrapper)
RegisterReceiver(BroadcastReceiver, IntentFilter, String, Handler, ReceiverFlags)	(Inherited from Context)
RemoveStickyBroadcast(Intent)	Obsolete. (Inherited from ContextWrapper)
RemoveStickyBroadcastAsUser(Intent, UserHandle)	Obsolete. (Inherited from ContextWrapper)
RevokeSelfPermissionOnKill(String)	Triggers the asynchronous revocation of a runtime permission. (Inherited from Context)
RevokeSelfPermissionsOnKill(ICollection<String>)	Triggers the revocation of one or more permissions for the calling package. (Inherited from Context)
RevokeUriPermission(String, Uri, ActivityFlags)	(Inherited from ContextWrapper)
RevokeUriPermission(Uri, ActivityFlags)	Remove all permissions to access a particular content provider Uri that were previously added with M:Android.Content.Context.GrantUriPermission(System.String,Android.Net.Uri,Android.Net.Uri). (Inherited from ContextWrapper)
SendBroadcast(Intent)	Broadcast the given intent to all interested BroadcastReceivers. (Inherited from ContextWrapper)
SendBroadcast(Intent, String)	Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced. (Inherited from ContextWrapper)
SendBroadcast(Intent, String, Bundle)	Broadcast the given intent to all interested BroadcastReceivers, allowing an optional required permission to be enforced. (Inherited from Context)
SendBroadcastAsUser(Intent, UserHandle)	Version of SendBroadcast(Intent) that allows you to specify the user the broadcast will be sent to. (Inherited from ContextWrapper)
SendBroadcastAsUser(Intent, UserHandle, String)	Version of SendBroadcast(Intent, String) that allows you to specify the user the broadcast will be sent to. (Inherited from ContextWrapper)
SendBroadcastWithMultiplePermissions(Intent, String[])	Broadcast the given intent to all interested BroadcastReceivers, allowing an array of required permissions to be enforced. (Inherited from Context)
SendOrderedBroadcast(Intent, Int32, String, String, BroadcastReceiver, Handler, String, Bundle, Bundle)	(Inherited from ContextWrapper)
SendOrderedBroadcast(Intent, String)	(Inherited from ContextWrapper)
SendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, Result, String, Bundle)	Version of SendBroadcast(Intent) that allows you to receive data back from the broadcast. (Inherited from ContextWrapper)
SendOrderedBroadcast(Intent, String, 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. (Inherited from Context)
SendOrderedBroadcast(Intent, String, Bundle, BroadcastReceiver, Handler, Result, String, Bundle)	Version of `#sendBroadcast(Intent)` that allows you to receive data back from the broadcast. (Inherited from Context)
SendOrderedBroadcast(Intent, String, String, BroadcastReceiver, Handler, Result, String, Bundle)	Version of `#sendOrderedBroadcast(Intent, String, BroadcastReceiver, Handler, int, String, Bundle)` that allows you to specify the App Op to enforce restrictions on which receivers the broadcast will be sent to. (Inherited from Context)
SendOrderedBroadcastAsUser(Intent, UserHandle, String, BroadcastReceiver, Handler, Result, String, Bundle)	(Inherited from ContextWrapper)
SendResponseApdu(Byte[])	Sends a response APDU back to the remote device.
SendStickyBroadcast(Intent)	Obsolete. Perform a `#sendBroadcast(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(BroadcastReceiver, IntentFilter)`. (Inherited from ContextWrapper)
SendStickyBroadcast(Intent, Bundle)	Perform a `#sendBroadcast(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(BroadcastReceiver, IntentFilter)`. (Inherited from Context)
SendStickyBroadcastAsUser(Intent, UserHandle)	Obsolete. (Inherited from ContextWrapper)
SendStickyOrderedBroadcast(Intent, BroadcastReceiver, Handler, Result, String, Bundle)	Obsolete. (Inherited from ContextWrapper)
SendStickyOrderedBroadcastAsUser(Intent, UserHandle, BroadcastReceiver, Handler, Result, String, Bundle)	Obsolete. (Inherited from ContextWrapper)
SetForeground(Boolean)	This member is deprecated. (Inherited from Service)
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
SetTheme(Int32)	Set the base theme for this context. (Inherited from ContextWrapper)
SetWallpaper(Bitmap)	Obsolete. (Inherited from ContextWrapper)
SetWallpaper(Stream)	Obsolete. (Inherited from ContextWrapper)
StartActivities(Intent[])	Same as StartActivities(Intent[], Bundle) with no options specified. (Inherited from ContextWrapper)
StartActivities(Intent[], Bundle)	Launch multiple new activities. (Inherited from ContextWrapper)
StartActivity(Intent)	Same as StartActivity(Intent, Bundle) with no options specified. (Inherited from ContextWrapper)
StartActivity(Intent, Bundle)	Launch a new activity. (Inherited from ContextWrapper)
StartActivity(Type)	(Inherited from Context)
StartForeground(Int32, 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. (Inherited from Service)
StartForeground(Int32, Notification, ForegroundService)	An overloaded version of `#startForeground(int, Notification)` with additional foregroundServiceType parameter. (Inherited from Service)
StartForegroundService(Intent)	(Inherited from ContextWrapper)
StartInstrumentation(ComponentName, String, Bundle)	Start executing an Instrumentation class. (Inherited from ContextWrapper)
StartIntentSender(IntentSender, Intent, ActivityFlags, ActivityFlags, Int32)	(Inherited from ContextWrapper)
StartIntentSender(IntentSender, Intent, ActivityFlags, ActivityFlags, Int32, Bundle)	Like StartActivity(Intent, Bundle), but taking a IntentSender to start. (Inherited from ContextWrapper)
StartService(Intent)	Request that a given application service be started. (Inherited from ContextWrapper)
StopForeground(Boolean)	Legacy version of `#stopForeground(int)`. (Inherited from Service)
StopForeground(StopForegroundFlags)	Remove this service from foreground state, allowing it to be killed if more memory is needed. (Inherited from Service)
StopSelf()	Stop the service, if it was previously started. (Inherited from Service)
StopSelf(Int32)	Old version of `#stopSelfResult` that doesn't return a result. (Inherited from Service)
StopSelfResult(Int32)	Stop the service if the most recent time it was started was <var>startId</var>. (Inherited from Service)
StopService(Intent)	Request that a given application service be stopped. (Inherited from ContextWrapper)
ToArray<T>()	(Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnbindService(IServiceConnection)	Disconnect from an application service. (Inherited from ContextWrapper)
UnregisterComponentCallbacks(IComponentCallbacks)	Remove a `ComponentCallbacks` object that was previously registered with `#registerComponentCallbacks(ComponentCallbacks)`. (Inherited from Context)
UnregisterDeviceIdChangeListener(IIntConsumer)	Removes a device ID changed listener from the Context. (Inherited from Context)
UnregisterFromRuntime()	(Inherited from Object)
UnregisterReceiver(BroadcastReceiver)	Unregister a previously registered BroadcastReceiver. (Inherited from ContextWrapper)
UpdateServiceGroup(IServiceConnection, Int32, Int32)	For a service previously bound with `#bindService` or a related method, change how the system manages that service's process in relation to other processes. (Inherited from Context)
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)

Explicit Interface Implementations

IJavaPeerable.Disposed()	(Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	(Inherited from Object)
IJavaPeerable.Finalized()	(Inherited from Object)
IJavaPeerable.JniManagedPeerState	(Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	(Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	(Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to

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