harmony 鸿蒙@ohos.app.ability.UIExtensionAbility (Base Class for ExtensionAbilities with UI)
@ohos.app.ability.UIExtensionAbility (Base Class for ExtensionAbilities with UI)
UIExtensionAbility, inherited from ExtensionAbility, is a base class for ExtensionAbilities with UI in specific scenarios. It provides attributes and APIs related to ExtensionAbilities with UI. You cannot inherit from this base class.
NOTE
The initial APIs of this module are supported since API version 10. 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 UIExtensionAbility from '@ohos.app.ability.UIExtensionAbility';
Attributes
System capability: SystemCapability.Ability.AbilityRuntime.AbilityCore
Name | Type | Readable | Writable | Description |
---|---|---|---|---|
context | UIExtensionContext | Yes | No | Context. |
UIExtensionAbility.onCreate
onCreate(): void
Called to initialize the service logic when a UIExtensionAbility is being created.
System capability: SystemCapability.Ability.AbilityRuntime.Core
UIExtensionAbility.onSessionCreate
onSessionCreate(want: Want, session: UIExtensionContentSession): void
Called when a UIExtensionContentSession instance is created for this UIExtensionAbility.
System capability: SystemCapability.Ability.AbilityRuntime.Core
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
want | Want | Yes | Want information related to this UIExtensionAbility, including the ability name and bundle name. |
session | UIExtensionContentSession | Yes | UI content information related to this UIExtensionAbility. |
UIExtensionAbility.onSessionDestroy
onSessionDestroy(session: UIExtensionContentSession): void
Called when a UIExtensionContentSession instance is destroyed for this UIExtensionAbility.
System capability: SystemCapability.Ability.AbilityRuntime.Core
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
session | UIExtensionContentSession | Yes | UI content information related to this UIExtensionAbility. |
UIExtensionAbility.onForeground
onForeground(): void;
Called when this UIExtensionAbility is switched from the background to the foreground.
System capability: SystemCapability.Ability.AbilityRuntime.AbilityCore
UIExtensionAbility.onBackground
onBackground(): void;
Called when this UIExtensionAbility is switched from the foreground to the background.
System capability: SystemCapability.Ability.AbilityRuntime.AbilityCore
UIExtensionAbility.onDestroy
onDestroy(): void|Promise<void>;
Called to clear resources when this UIExtensionAbility is destroyed.
After the onDestroy() lifecycle callback is executed, the application may exit. Consequently, the asynchronous function (for example, asynchronously writing data to the database) in onDestroy() may fail to be executed. You can use the asynchronous lifecycle to ensure that the subsequent lifecycle continues only after the asynchronous function in onDestroy() finishes the execution.
System capability: SystemCapability.Ability.AbilityRuntime.Core
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