@ohos.application.AbilityConstant (AbilityConstant)

The AbilityConstant module defines the ability-related enums, including the initial launch reasons, reasons for the last exit, ability continuation results, and window modes.

NOTE

The APIs of this module are supported since API version 9 and are deprecated in versions later than API version 9. You are advised to use @ohos.app.ability.AbilityConstant instead. Newly added APIs will be marked with a superscript to indicate their earliest API version. The APIs of this module can be used only in the stage model.

Modules to Import

import AbilityConstant from '@ohos.application.AbilityConstant';

Attributes

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Type	Readable	Writable	Description
launchReason	LaunchReason	Yes	Yes	Ability launch reason.
lastExitReason	LastExitReason	Yes	Yes	Reason for the last exit.

AbilityConstant.LaunchReason

Enumerates the initial ability launch reasons.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Value	Description
UNKNOWN	0	Unknown reason.
START_ABILITY	1	Ability startup.
CALL	2	Call.
CONTINUATION	3	Ability continuation.
APP_RECOVERY	4	Application recovery.

AbilityConstant.LastExitReason

Enumerates the reasons for the last exit.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Value	Description
UNKNOWN	0	Unknown reason.
ABILITY_NOT_RESPONDING	1	The ability does not respond.
NORMAL	2	Normal status.

AbilityConstant.OnContinueResult

Enumerates the ability continuation results.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Value	Description
AGREE	0	Continuation agreed.
REJECT	1	Continuation denied.
MISMATCH	2	Mismatch.

AbilityConstant.WindowMode

Enumerates the window modes in which an ability can be displayed at startup.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Value	Description
WINDOW_MODE_UNDEFINED	0	Undefined window mode.
WINDOW_MODE_FULLSCREEN	1	The ability is displayed in full screen.
WINDOW_MODE_SPLIT_PRIMARY	100	The ability is displayed in the primary window in split-screen mode.
WINDOW_MODE_SPLIT_SECONDARY	101	The ability is displayed in the secondary window in split-screen mode.
WINDOW_MODE_FLOATING	102	The ability is displayed in a floating window.

AbilityConstant.MemoryLevel

Enumerates the memory levels.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Value	Description
MEMORY_LEVEL_MODERATE	0	Moderate memory usage.
MEMORY_LEVEL_LOW	1	Low memory usage.
MEMORY_LEVEL_CRITICAL	2	High memory usage.

AbilityConstant.OnSaveResult

Enumerates the result types for the operation of saving application data.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Value	Description
ALL_AGREE	0	Agreed to save the status.
CONTINUATION_REJECT	1	Rejected to save the status in continuation.
CONTINUATION_MISMATCH	2	Continuation mismatch.
RECOVERY_AGREE	3	Agreed to restore the saved status.
RECOVERY_REJECT	4	Rejected to restore the saved state.
ALL_REJECT	5	Rejected to save the status.