Context class

Interface to global information about an application environment.

This is an abstract class whose implementation is provided by the Android system. It allows access to application-specific resources and classes, as well as up-calls for application-level operations such as launching activities, broadcasting and receiving intents, etc.

See: https://developer.android.com/reference/android/content/Context

Constructors

Context()

Properties

hashCode → int

The hash code for this object.

read-only, inherited

runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a non-existent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

cacheDir → Future<Directory>

Returns the absolute path to the application specific cache directory on the filesystem.

read-only

codeCacheDir → Future<Directory>

Returns the absolute path to the application specific cache directory on the filesystem designed for storing cached code.

read-only

dataDir → Future<Directory>

Returns the absolute path to the directory on the filesystem where all private files belonging to this app are stored.

read-only

externalCacheDir → Future<Directory>

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.

read-only

externalFilesDir → Future<Directory>

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.

read-only

filesDir → Future<Directory>

Returns the absolute path to the directory on the filesystem where files created with openFileOutput(String, int) are stored.

read-only

noBackupFilesDir → Future<Directory>

Returns the absolute path to the directory where files placed under this directory will be excluded from automatic backup to remote storage.

read-only

packageCodePath → Future<File>

Return the full path to this context's primary Android package. The Android package is a ZIP file which contains application's primary code and assets.

read-only

packageName → Future<String>

Return the name of this application's package.

read-only

packageResourcePath → Future<File>

Return the full path to this context's primary Android package. The Android package is a ZIP file which contains the application's primary resources.

read-only

Static Methods

getSharedPreferences(String name, [int mode = 0]) → Future<SharedPreferences>

Retrieves and holds the contents of the preferences file name, returning a SharedPreferences through which you can retrieve and modify its values.

getSystemService(String name) → dynamic

Returns the handle to a system-level service by name.

Constants

ACCESSIBILITY_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#ACCESSIBILITY_SERVICE

"accessibility"

ACCOUNT_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#ACCOUNT_SERVICE

"account"

ACTIVITY_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#ACTIVITY_SERVICE

"activity"

ALARM_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#ALARM_SERVICE

"alarm"

APP_OPS_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#APP_OPS_SERVICE

"appops"

APPWIDGET_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#APPWIDGET_SERVICE

"appwidget"

AUDIO_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#AUDIO_SERVICE

"audio"

BATTERY_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#BATTERY_SERVICE

"batterymanager"

BLUETOOTH_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#BLUETOOTH_SERVICE

"bluetooth"

CAMERA_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#CAMERA_SERVICE

"camera"

CAPTIONING_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#CAPTIONING_SERVICE

"captioning"

CARRIER_CONFIG_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#CARRIER_CONFIG_SERVICE

"carrier_config"

CLIPBOARD_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#CLIPBOARD_SERVICE

"clipboard"

COMPANION_DEVICE_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#COMPANION_DEVICE_SERVICE

"companiondevice"

CONNECTIVITY_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#CONNECTIVITY_SERVICE

"connectivity"

CONSUMER_IR_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#CONSUMER_IR_SERVICE

"consumer_ir"

CROSS_PROFILE_APPS_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#CROSS_PROFILE_APPS_SERVICE

"crossprofileapps"

DEVICE_POLICY_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#DEVICE_POLICY_SERVICE

"device_policy"

DISPLAY_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#DISPLAY_SERVICE

"display"

DOWNLOAD_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#DOWNLOAD_SERVICE

"download"

DROPBOX_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#DROPBOX_SERVICE

"dropbox"

EUICC_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#EUICC_SERVICE

"euicc"

FINGERPRINT_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#FINGERPRINT_SERVICE

"fingerprint"

HARDWARE_PROPERTIES_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#HARDWARE_PROPERTIES_SERVICE

"hardware_properties"

INPUT_METHOD_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#INPUT_METHOD_SERVICE

"input_method"

INPUT_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#INPUT_SERVICE

"input"

IPSEC_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#IPSEC_SERVICE

"ipsec"

JOB_SCHEDULER_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#JOB_SCHEDULER_SERVICE

"jobscheduler"

KEYGUARD_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#KEYGUARD_SERVICE

"keyguard"

LAUNCHER_APPS_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#LAUNCHER_APPS_SERVICE

"launcherapps"

LAYOUT_INFLATER_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#LAYOUT_INFLATER_SERVICE

"layout_inflater"

LOCATION_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#LOCATION_SERVICE

"location"

MEDIA_PROJECTION_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#MEDIA_PROJECTION_SERVICE

"media_projection"

MEDIA_ROUTER_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#MEDIA_ROUTER_SERVICE

"media_router"

MEDIA_SESSION_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#MEDIA_SESSION_SERVICE

"media_session"

MIDI_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#MIDI_SERVICE

"midi"

NETWORK_STATS_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#NETWORK_STATS_SERVICE

"netstats"

NFC_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#NFC_SERVICE

"nfc"

NOTIFICATION_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#NOTIFICATION_SERVICE

"notification"

NSD_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#NSD_SERVICE

"servicediscovery"

POWER_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#POWER_SERVICE

"power"

PRINT_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#PRINT_SERVICE

"print"

RESTRICTIONS_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#RESTRICTIONS_SERVICE

"restrictions"

SEARCH_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#SEARCH_SERVICE

"search"

SENSOR_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#SENSOR_SERVICE

"sensor"

SHORTCUT_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#SHORTCUT_SERVICE

"shortcut"

STORAGE_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#STORAGE_SERVICE

"storage"

STORAGE_STATS_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#STORAGE_STATS_SERVICE

"storagestats"

SYSTEM_HEALTH_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#SYSTEM_HEALTH_SERVICE

"systemhealth"

TELECOM_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#TELECOM_SERVICE

"telecom"

TELEPHONY_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#TELEPHONY_SERVICE

"phone"

TELEPHONY_SUBSCRIPTION_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#TELEPHONY_SUBSCRIPTION_SERVICE

"telephony_subscription_service"

TEXT_CLASSIFICATION_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#TEXT_CLASSIFICATION_SERVICE

"textclassification"

TEXT_SERVICES_MANAGER_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#TEXT_SERVICES_MANAGER_SERVICE

"textservices"

TV_INPUT_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#TV_INPUT_SERVICE

"tv_input"

UI_MODE_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#UI_MODE_SERVICE

"uimode"

USAGE_STATS_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#USAGE_STATS_SERVICE

"usagestats"

USB_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#USB_SERVICE

"usb"

USER_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#USER_SERVICE

"user"

VIBRATOR_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#VIBRATOR_SERVICE

"vibrator"

WALLPAPER_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#WALLPAPER_SERVICE

"wallpaper"

WIFI_AWARE_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#WIFI_AWARE_SERVICE

"wifiaware"

WIFI_P2P_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#WIFI_P2P_SERVICE

"wifip2p"

WIFI_RTT_RANGING_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#WIFI_RTT_RANGING_SERVICE

"wifirtt"

WIFI_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#WIFI_SERVICE

"wifi"

WINDOW_SERVICE → const String

See: https://developer.android.com/reference/android/content/Context#WINDOW_SERVICE

"window"