harmony 鸿蒙@ohos.WallpaperExtensionAbility (WallpaperExtensionAbility)
@ohos.WallpaperExtensionAbility (WallpaperExtensionAbility)
The WallpaperExtensionAbility module provides lifecycle callbacks for wallpaper extension abilities and APIs for listening for wallpaper changes.
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.
The APIs provided by this module are system APIs.
Modules to Import
import WallpaperExtensionAbility from '@ohos.WallpaperExtensionAbility';
WallpaperExtensionAbility.onCreate
onCreate(want: object): void
Called to initialize a wallpaper extension ability when it is launched.
System capability: SystemCapability.MiscServices.Wallpaper
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
want | object | Yes | Want information related to the wallpaper extension ability, including the ability name and bundle name. |
Example
import WallpaperExtensionAbility from '@ohos.WallpaperExtensionAbility';
import Want from '@ohos.app.ability.Want';
class WallpaperExt extends WallpaperExtensionAbility {
onCreate(want: Want): void {
console.log('onCreate, want:' + want.abilityName);
}
}
WallpaperExtensionAbility.onWallpaperChange
onWallpaperChange(wallpaperType: number): void
Called when the wallpaper changes.
System capability: SystemCapability.MiscServices.Wallpaper
Parameters
Name | Type | Mandatory | Description |
---|---|---|---|
wallpaperType | number | Yes | Wallpaper type. 0: home screen wallpaper. 1: lock screen wallpaper. |
Example
import WallpaperExtensionAbility from '@ohos.WallpaperExtensionAbility';
import wallpaper from '@ohos.wallpaper';
class WallpaperExt extends WallpaperExtensionAbility {
onWallpaperChange(wallpaperType: wallpaper.WallpaperType): void {
console.log('onWallpaperChange, wallpaperType:' + wallpaperType);
}
}
WallpaperExtensionAbility.onDestroy
onDestroy(): void
Called when this wallpaper extension ability is destroyed to clear resources.
System capability: SystemCapability.MiscServices.Wallpaper
Example
import WallpaperExtensionAbility from '@ohos.WallpaperExtensionAbility';
class WallpaperExt extends WallpaperExtensionAbility {
onDestroy(): void {
console.log('onDestroy');
}
}
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